83873900 0602
for Nursing Homes & Health Care Facilities
INSTALLATION MANUAL
c
This Manual is supplied with the NHX-80X Central Control Unit.
Prior to installation of NHX system, the contents of this Manual must be thoroughly read and understood.
The Operation Manual is supplied with the NHX-50M master station.
: WARNING
: Prohibitions to dismantle equipment.
(Negligence could result in death or serious
injury)
: PRECAUTIONS
: Prohibitions to subject the equipment to
water.
(Negligence could result in injury or damage
to property)
: Take the unit to earth ground.
: GENERAL PRECAUTIONS.
WARNING
1. Do not connect a power supply other than Aiphone Model PS-24E or PS-2420 to terminals +,
– on NHX-80X. Doing so can cause fire or damage to the unit.
2. Do not change or modify NHX equipment.
3. The NHX equipment must not be exposed to water or any other liquid.
4. Do not open NHX-80X without first unplugging power supply(ies) to prevent electric shock.
5. Make sure wires are connected properly before plugging in the power supply(ies).
6. Keep AC cord free from being pulled or crushed.
7. Do not plug or unplug with wet hands.
8. Keep AC outlet away from moisture and dust.
PRECAUTIONS
1. Mount the NHX-80X unit on wall in a convenient location, but not where it could be bumped or
jarred.
2. Do not install NHX components in any of the following locations, as it may cause the system
to malfunction;
– High or extreme cold temperature area: under direct sunlight, near equipment that varies
in temperature, in front of air-conditioner, inside a refrigerated area, etc.
– Places subject to moisture or humidity extremes.
– Places subject to environmental conditions, such as oil, dust, chemicals, salt, etc.
– Places subject to constant vibration or impact.
3. Take to earth ground every bed of metal pipe construction to protect Bedside sub stations and
hand-held call buttons from ESD(Electrostatic discharge).
1. NHX system is not operable during a power failure.
2. In areas where broadcasting station antennas are close by, NHX intercom system may be
affected by radio frequency interference.
3. Keep all DC wiring at least 30cm, 20” away from AC100~240V wiring, fluorescent lighting, or
dimmer switches. Cross AC wiring at a 90° angle.
4. Do not connect any devices other than the Aiphone Models covered in this Manual.
Markings
In accordance with CSA C22.2 No.125-M1984, the 4th Edition Standard, For Electromedical
Equipment the following NHX Series units are provided with the "Risque class1 Part" (and in French-
"Risque La Pièce class1") marking.
Model NH-1SA, and -2SA, -1SA/A, -2SA/A Patient Stations;
Model NHR-7A, Bath Pull-Cord Stations;
Model NHR-8A, Call Cord
– 3 –
1
SYSTEM OUTLINE & COMPONENTS
The NHX is a Health Care Communication System, exclusively designed for patient to staff
communications in health care facilities. The NHX system is UL Listed under UL1069 the Standard for
Hospital Signalling & Nurse Call Equipment. At Nurses Center, the NHX-50M master station is an
extremely compact, low profile console. Add-on 30-call selector can be plugged into NHX-50M. In each
room, single or dual-call Nurse Call bedside sub stations are used with corridor light and bathroom call
switch. The NHR-3TS is a common area or hallway sub station, which can be used with a NHR-7A
pullcord urgent call switch.
Ⅲ Package Contents
Central Control Unit (NHX-80X)
• Packet of screws
• Installation Manual
• Replacement 3A Fuse (2)
(attached inside back case)
Ⅵ SYSTEM OUTLINE
1. Up to 8 Sub trunk lines (10 rooms each).
Failure on one line does not affect the other trunk lines.
• Optional conduit wiring through junction boxes.
• Max. 10 sub stations in parallel per block.
• Programming # on each sub.
• Sub station may have urgent bathroom call button (ea. 3 wires).
• Corridor light mounted on 1-gang box (3 wires).
• Gang box may be used for junction of 3P Trunk cable.
2. NHX-80X Central Control Unit.
50 or 80-call station capacity.
• CCU wall-mounts on 3-gang box or inside electrical enclosure (both UL Listed).
• Install NHR-30K, 30-call add-on Trunk Card in the NHX-80X.
3. Compact 50-call Master Station.
• 30-call add-on selector plugs in and connects with bracket.
• Max. 4 Zone lights, ceiling or wall mount. With any type of call, light comes on to indicate the calling
zone. One separate PS-24E or PS-2420 required for 2 Zone lights.
• Duty station (NHR-SP) annunciates call tone, with TONE OFF button.
4. NHR-3TS Bathroom call sub station places an urgent call.
• NHR-3TS contains sub station circuitry.
• May be used in two ways: one as common area bathroom call sub station(2 red lights) used with
NHR-7A bathroom pullcord, the other as hallway staff call sub station (one white lamp used) used
with the same NHR-7A call switch.
5. Bedside sub station NH-1SA/A and NH-2SA/A for multiple installation within a patient room.
• Max. 6 bedside sub stations within a patient room.
• Single and common bathroom call switch.
• Single or two corridor light installation.
– 4 –
1. SYSTEM OUTLINE & COMPONENTS
Sub Trunk line 1
NHR-7A
Sub station
NHR-3TS
Common area
Restrooms
3
Bathroom pullcord
10
9
6(3P)
Junction box
NHR-7A
(*)4P with
NHR-3A-4
3
NHR-3TS
NHR-4A
NHR-7A
Staff call
area
6(3P)
3
(*)4P with
NHR-3A-4
NHR-7A
(common)
Bedside sub
area (multiple
stations)
3
3
5
6
7
8
To the farthest sub,
max.165' (50m) with
min. 22AWG wire.
Sub trunk line must not
exceed 330' (100m) in
total with 22AWG wire.
6(3P)
(*)4P with
NHR-3A-4
NH-1SA/A
(4 units)
NHR-8A
NHR-4A
Bedside sub
area (single
station)
3
3
NHR-7A
2
6(3P)
(*)4P with
NHR-3A-4
NH-1SA/A
NH-1SA
NHR-8A
65' (20m)
65' (20m)
w/22AWG min.
w/22AWG min.
NHR-4A
NHR-7A
3
3
1
6(3P)
(*)4P with
NHR-3A-4
Sub Trunk lines 2 ~ 8
NH-2SA/A
NH-2SA
NHR-8A
6(3P)
165' (50m) w/18AWG
Zone lights
NHR-3A-4
(up to 4)
5
5
5
5
PS24
PS24
PS24
PS24
65' (20m) w/ 22AWG
Duty station
NHR-SP
5
NHX-80X
CCU
16' (5m)
w/18AWG
65' (20m)
w/22AWG min.
Master & Add-on
NHX-50M &
NHX-30G
10(5P)
PS24
Do not connect two power supplies in parallel.
(*) Each zone requires a separate common wire
from the NHX-80X.
PS-24E or PS-2420
– 5 –
1.SYSTEM OUTLINE & COMPONENTS
Ⅵ COMPONENTS AVAILABLE
• Central Control Unit
• Urgent bathroom call sub station • Bedside sub stations
(common area)
NH-1SA/A
NH-1SA
NH-2SA/A
NH-2SA
NHR-3TS
NHX-80X
(for optional conduit connection)
• Master station & Add-on selector
• Duty station
NHR-SP
NHX-50M
NHX-30G
• Central Control Unit
• Master station
NHX-80X: Central Control Unit(CCU) w/50 or 80 station capacity.
NHX-50M: 50-call master console.
NHX-30G: 30-call add-on selector, plug-in connector.
NHR-SP: Duty station. Call tone receiver.
NH-1SA/A, NH-1SA: Single-call sub station.
NH-2SA/A, NH-2SA: Dual-call sub station.
NHR-3TS: Common area call station, used w/NHR-7A Bathroom pullcord.
NHR-3TS: Urgent staff call sub station, used w/NHR-7A mechanical lock switch
in the hallway.
• Duty station
• Bedside sub stations
• Corridor lamp (sub)
• Power supply
PS-24E or PS-2420: AC 120V. DC24V, 2A. 2 required for NHX-80X only.
One separate PS-24E or PS-2420 required for two Zone lights.
•30-call add-on trunk card NHR-30K: XC-461 Card complete with mounting accessories for system
expansion to 80 stations.
– 6 –
1. SYSTEM OUTLINE & COMPONENTS
Ⅵ Accessories: Aiphone Models & UL Listed locally available
1
2
3
4
NHR-3A-4
NHR-4A
NHR-7A
NHR-8A
NHR-7A w/Pullcord
NHR-DP
• Zone light
(NHR-3A-4)
4-zone indicator light. Max. 4 units.
Up to 2 units powered by a PS-24E or PS-2420 power supply.
• Urgent call switch
(NHR-7A)
Provides dry closure contact, with mechanically latching switch.
Master-RING LED is lit.
Used with bedside sub station, or NHR-3TS corridor lamp in common area for
urgent bathroom call, or in the hallway for urgent staff call. Urgent call switch
cannot be used alone.
Contact Ratings; DC 24V, 10mA to max. 20mA (min. 5mA or more).
• Hand-held call cord
(NHR-8A)
Provides dry closure contact with 1/4" phone plug.
• Corridor lamp
(NHR-4A)
Connected to each. Bedside sub station.
Two lamps (red & white).
Ratings; 24V, 100mA.
• Dummy plug
(NHR-DP)
Plugs into jack unused on bedside sub stations.
– 7 –
2
NAMES & FEATURES
Ⅵ NHX-50M
2
3
4
5
Desk use only
1
12
13
11
6
7
8
9 10
94
280
(11")
(3-3 ")
/
4
NHX-50M
11. Handset
12. Speaker
13. Directory
14. Sub call-in LED
15. Sub selector button
16. Power on LED
17. Mic.
18. OFF button
19. TALK button
10. TONE-OFF button
11. Attendance LED
12. RECEIVE VOL.
13. TONE VOL. See OPERATIONS section.
– 8 –
2. NAMES & FEATURES
Ⅵ NHX-30G
58.5
NHX-30G
(2-5 ")
/
90
(3-9 ")
16
1. Directory
45.5
12
2. Sub call-in LED
3. Sub selector button
/
16
(11-2 ")
(1 ")
/
/
2
16
(1 ")
1
/
32
1
2
3
Ⅵ NH-1SA/A
2-gang mounting
1. Speaker/mic.
2. CANCEL button (for routine call only)
3. TALK mode LED
4. Master-RING LED (CALL)
5. Jack (1) for CALL button
46
(1-13 ")
/
116
/
16
16
(7 ")
11
(4-9 ")
/
16
35
(1-3 ")
/
8
CANCEL button: Cancels a routine call only,
while the bathroom and cord-out trouble call
can be cancelled at the site.
2
3
4
1
5
Ⅵ NH-2SA/A
2-gang mounting
1. Speaker/mic.
2. CANCEL button (for Routine call only)
3. TALK mode LED
4. Master-RING LED (CALL)
5. Jacks(2) for CALL button
46
(1-13 ")
/
116
/
16
16
(7 ")
11
(4-9 ")
/
16
35
(1-3 ")
/
8
2
3
4
1
5
– 9 –
2. NAMES & FEATURES
Ⅵ NHX-80X
3-gang mounting
1. Power on LED, green
2. Front cover screw (2)
3. Power switch
1
2
3
340
98
/
8
(13-3 ")
(3-7 ")
/
8
Ⅵ PS-24E
Ⅵ PS-2420
52
/
16
90
/
16
(2-1 ")
(3-9 ")
Single-gang bracket mounting
52
/
16
90
/
16
(2-1 ")
(3-9 ")
4
4
1
2
3
1
2
3
1. 24V DC output terminals
2. Terminal for grounding
3. 120V AC input power cord & plug of
approx. 6’3”(1.9m) long
4. Cover of Terminal section
– 10 –
2. NAMES & FEATURES
Ⅵ NHR-3TS
Ⅵ NHR-4A
Single-gang mounting
1
2-gang mounting
1
38
116
28
45
(1-1 ")
70(2-3 ")
(4-9 ")
(1-1 ") (1-3 ")
/
2
/
16
/
8
/
4
/
4
48(1- 7 ")
/
8
1. Lamp cover (2)
Red lamps inside
1. Lamp cover
White & red lamps inside
Ⅵ NHR-SP
Ⅵ NHR-7A
Single-gang mounting
2-gang mounting
1
2
3
1
2
7
16
(
11
")
/
35
(1-3 ")
/
8
116
/
16
46
/
16
10(5 ")
(4-9 ")
(1-13 ")
/
16
71(2-13 ")
/
16
1. Speaker
1. Master-RING LED
2. Pull-lock switch
2. TONE-OFF button
3. Master-RING LED (CALL)
Tie up the pullcord supplied
Ⅵ NHR-3A-4
Ⅵ NHR-8A
5-gang mounting
1
230 (9-1 ")
/
16
1
3
2
438 (17- 1 ")
69(2-3 ")
Approx. 2.1m(6'11")
/
/
4
4
1. Lamp cover (4) Red lamps inside
2. 5-gang mounting holes
1. Plug
2. Clip
3. Call button
– 11 –
2. NAMES & FEATURES
Ⅵ System Features
1. Listed UL1069 Patient to Staff Communication System for up to 80 stations.
2. Voice-actuated handset or press-to-talk communication.
Single and private channel (cannot be broken into).
3. Up to 8 trunk lines for subs. Max. 10 sub stations per trunk line.
3 twisted pair looped wiring, plus one separate wire for zone light indicator.
4. Compact sized 50-call master station.
30-call add-on selector simply plugs into master. (Expansion card required for CCU)
5. Single or dual-call Nurse Call bedside sub stations, able to have multiple stations in one room with
common bathroom pullcord and corridor lamp.
6. NHR-3TS Bathroom/Hallway urgent call sub station used with NHR-7A pullcord or switch.
7. Listed UL 1069 components: Corridor lamps, Bathroom pullcords,
urgent call switches, and Zone lights.
8. Three types of calls with distinct tone and light signalling.
1) Routine Call
2) Urgent Call- from bathroom common area bath or urgent call station
3) Cord-out trouble call from bedside.
Calls are answered in order of urgency and time of call.
9. Call tone & LED annunciation at Duty station.
10. Station number programming on each Sub station.
11. Sub stations connection verification at NHX-50M Master station.
12. Line-off trouble sounds intermittent buzzer with LED illumination.
13. Plug in wire terminations at Master and Sub stations. Makes replacement easy.
Ⅵ System capabilities
1. A call from dual-call bedside sub (NH-2SA/A) lights the same call-in LED on the NHX-50M or NHX-30G.
2. NHX-50M master holds max. five call-in LED’s simultaneously.
3. The following features are not included in the NHX system;
• Second master in parallel (for routing calls). • Ceiling mount sub
• Desk or hand-held sub. • Call extension speaker
• Communication with 2 or more subs at a time. • Background music
• All call
– 12 –
3
INSTALLATION & WIRING
Ⅵ Mounting location
NHX equipment is designed for indoor use only. NHX-80X must be wall-mounted on a UL Listed 3-gang
box or in a Listed electrical enclosure. The enclosure should be provided with a solid noncombustible
mounting plate board for securing the NHX-80X chassis. ( Ref. NHX-80X dimensions: 460H x 340W x
98D. 18-1/8"H x 13-3/8"W x 3-7/8"D). Locate the NHX-50M master within close proximity of the NHX-80X
CCU. (Max. 20m, 65' wiring distance)
Ⅵ Wiring
1. Use Aiphone specified shielded cable. Otherwise, run wires in metal conduit to prevent any
malfunction or noise interference.
2. CAUTION: – Risk of Electric Shock
When installing, route field wiring away from sharp projections, corners, and internal components.
Ⅵ Cable
For wiring between NHX-80X, NHX-50M, and sub stations, use UL Listed twisted pair cable, only copper
conductors, 22AWG min. or heavier, rated 300V. Cable to call buttons and lamps can be either parallel or
twisted pair cable, 22AWG or heavier, UL Listed.
Ⅵ Power supply
For NHX-80X CCU, use the power supply exclusively designed, as listed below;
• PS-24E or PS-2420: Rated input 120V AC, 50/60Hz. Rated output: DC 24V, 2A (Requires two units per
system).
For Zone light Model NHR-3A-4 (max. 4 per system), install a PS-24E or PS-2420 power supply for every
2 Zone lights.
Ⅵ Power off system resetting
When NHX system malfunctions, turn NHX-80X power switch off and on again, and entire system will be
reinitialized. The reset switch on NHX-80X is used when initializing NHX-80X for sub stations. The reset
switch on NHX-50M is used when checking connection of sub stations.
Ⅵ Zone light installation
Zone light will indicate which zone has a call placed at one to max. 4 locations in the facility.
• Permitted distance: 165’ with 18AWG (50m with 1.0mmø) from the NHX-80X.
Zone # 1
Zone # 3
Bedside sub stations
Zone light 1
Zone
light 3
Commom area
Commom area
Nurse Center
Zone
light 4
NHR-3TS urgent
staff call sub station
& NHR-7A switch
Zone light 2
NHR-3TS urgent bathroom call sub
Bedside sub stations
Zone # 2
Zone # 4
– 13 –
3. INSTALLATION & WIRING
Ⅵ Setting Station #1 ~ 10 on Sub stations
Before installing sub stations:
1. Make a SUB STATION # CHART (Fig. 2), assigning sub station numbers to each room where sub will
be installed.
2. Move 4 dip switches (1 ~ 4) on the back of the sub station according to the # chart.
• NHX-50M
As shown in Fig. 1, the vertical rows of Call buttons are
assigned sub station #1 ~ 10 (from top) of Trunks 1 - 5
Blocks
FIG.1
1
2
3
4
5
6
7
8
Station Nos.
1 from top
2
3
4
5
6
7
8
Powered from
NHX-80X
9
10
Master station
NHX-50M
Add-on selector
NHX-30G
• Sub stations
Sub # Set switches: Initially all in OFF position. Move to upper ON position, according to the Chart.
Seting Sub station #
1 2 4 8
1 2 4 8
DIP switches
Example:
1
2
3
4
5
6
7
* Do not assign the same number for
Otherwise, system will malfunction.
SW1
8
9
10
Powered from
NHX-80X
NH-1SA,NH-2SA,
NHR-3TS
The dip switches marked 1, 2, 3, 4 should read 1, 2, 4, 8
Back view
Example: Sub station # Chart
Bathroom
Pullcord
Corridor lamp
Urgent
Call Sw.
Type of Subs
Sub's Block
& Number
Zone #
Assigned
Block #
1
Subs #
Bedside
Toilet
Yes or No
Yes or No
Yes or No
BLOCK 1-1
1
2
3
4
5
6
7
8
9
1
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
2
3
4
5
6
7
8
9
10
◯
10
1
2
◯ (Staff call)
◯
(NHR-3TS own)
BLOCK 1-1
2
2
8
2
4
BLOCK 8-1
1
2
3
4
5
6
7
8
9
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
◯
2
3
4
5
6
7
8
9
◯
10
◯
10
◯
(NHR-3TS own)
Zone # 1 ~ 4: Assigned by wire terminations of Sub‘s ZL terminal.
Corresponding terminals are Z1 – Z4 on NHX-80X).
3. INSTALLATION & WIRING
Inside the cover, are located dip switches SW2-1~4,
RESET switch and four LED's.
SW2
SW1
RESET
1 2 3 4
Switch cover
TEST
SET
NORMAL OFF
CHECK
Power on
indicator
LED13
DT
LED1 LED11 LED12
WD
MD
MA
Power on switch
NHX-80X
Blinking fast
Not lit
Blinking slowly
Not lit
Front View
In standby, the status of the LED's
are as above.
Ⅵ Initializing NHX-80X for Sub stations
The NHX-80X CCU must be set to zero after all the sub station numbers are programmed.
Proceed as follows;
1. Remove the switch cover on front cover. Place the dip switch SW2-2(SET)
to upper ON position. The rest dip switches must remain in OFF
position.
2. Make sure sub stations are all in standby.
If a sub is not in standby mode, it cannot be acknowledged properly.
3. Turn power switch on NHX-80X ON.
4. Press RESET switch. LED 1 blinks green.
5. LED13 blinks green for 5 seconds, and goes out.
6. Place the dip switch SW2-2(SET) back to OFF position.
7. Press RESET switch again. Programming for subs is complete.
All the switches must be in OFF position. LED13 starts blinking.
See the status of four LED’s as above.
Ⅵ Checking Status of Sub stations on NHX-50M (Testing)
Test the NHX-50M to visually check status of all sub stations:
• On the bottom of the NHX-50M, press RESET button while holding down OFF button on front panel.
The NHX-50M enters testing mode. Check the sub stations throughout system as follows:
From sub 1 of the first row, the LED is lit and goes out if the sub is connected.
Then, the LED of sub 2 is lit and goes out. All subs are scanned in this way to check sub’s status. If a
sub is not connected, the LED is lit and remains on.
• If a sub is connected but the LED won’t go out, check status of the sub station as follows:
(1) Incorrect programming
(2) Not placed in standby with bathroom call
(3) Incorrect wire terminations
• On the subs(s), which have been found yet not programmed in testing mode, check number
programming. Repeat process from Step 4 of the above section.
• To get out of testing mode, press OFF button on NHX-50M.
– 15 –
3. INSTALLATION & WIRING
Ⅵ Terminal block layout
• NHX-80X
1
4
3
2
5
1. Subs trunk lines
11 ~ 16: for Block 1
21 ~ 26: for Block 2
31 ~ 36: for Block 3
41 ~ 46: for Block 4
51 ~ 56: for Block 5
61 ~ 66: for Block 6
71 ~ 76: for Block 7
81 ~ 86: for Block 8
3. Zone light connection
(to sub’s ZL terminal)
Z1: to Subs of zone 1
Z2: to Subs of zone 2
Z3: to Subs of zone 3
Z4: to Subs of zone 4
* A sub cannot have more than one zone
indication. (to Zone light)
R1: to zone light, lamp 1 control
R2: to zone light, lamp 2 control
R3: to zone light, lamp 3 control
R4: to zone light, lamp 4 control
1, 2: Voice
3: + 24V
4: GND
5: DATA +
6: DATA –
RC: Common
2. NHX-50M master
4. Power supply
M1: +24V
A+: DC 24V, 2A input
M2: GND
A–:
M3: DATA 1
B+: DC24V, 2A input
B–:
M4: DATA 2
M5: Voice
M6: Voice
DO NOT cross wires.
M7: Duty station connection
M8: Duty station call tone.
M9: Duty station call control
M10: Duty station LED control
5. Duty station NHR-SP connection
S1: Power
S2: GND
S3: Call control
S4: LED control
S5: Call tone
S6: Call tone
– 16 –
3. INSTALLATION & WIRING
Ⅵ Terminal block layout
• NHX-50M
Preset volume controls
TONE
PRE-TONE
TRANSMIT
DUTY STATION
RECEIVE
Plug NHX-30G
into 2 sockets.
Test switch
Reset switch
NHX-50M
Chassis
Bottom view
Plug-in socket(10-pin) CN1 :Supplied connector plugs in
for wiring to NHX-80X.
10 connector lead wires : connect to NHX-80X with 10 (5P) cable using wire nuts.
• NH-1SA/A
NH-1SA
NH-2SA/A
NH-2SA
NHR-3TS
Plug in the supplied
Plug-in socket
Sub station # set
(6-pin) CN1
connector for wiring to
dip switches
SW1
Sub Trunk line.
Plug-in socket
(8-pin) CN2(*)
Plug in the supplied
connector for wiring to
bathroom pullcord,
corridor lamp & zone
light #.
(*)7-pin on NH-1SA,
NH-2SA and NHR-3TS
NH-1SA/A, NH-1SA,
NH-2SA/A,NH-2SA,
NHR-3TS Back view
1 ~ 6: Connect 3P cable to Subs Trunk line. Ten stations
per trunk, connected to NHX-80X 11 - 16 (up to
81 - 86) terminals.
ZL: Zone light to a Zone No. terminal (Z1 ~ Z4)
• NHR-SP
Plug in the supplied
connector for wiring
to NHX-80X.
Plug-in socket
(6-pin) CN1
CAUTION:
NHR-SP
Back view
When NHR-SP Duty
Station is installed,
remove the Shorting
Connector (CN104) on
NHX-80X CCU.
– 17 –
WIRING DIAGRAMS
1. NHX-80X CCU to NHX-50M, NHX-30G & Duty station
NHX-80X
6
10(5P)
Duty station
Master
Add-on
NHX-50M
NHX-30G
NHR-SP
NHX-80X
NHX-50M
NHX-30G
Each polarized pairs
M1
M2
M3
M4
M5
M6
M7
M8
M9
M10
M1
M2
M3
M4
M5
M6
M7
M8
M9
M6
Connectors (2)
CN104
Removed
Duty station
NHR-SP
6(parallel)
S1
S2
S3
S4
S5
S6
S1
S2
S3
S4
S5
S6
Wiring on NHX-80X CCU
* Use UL Listed cable for all wiring.
To: NHX-50M
5P
To: NHR-SP
Cable
6 parallel conductors
Distance
65' w/22AWG
(20m w/0.65mmø)
65' w/22AWG
(20m w/0.65mmø)
When Duty station (NHR-SP) is installed, remove the shorting
connector from CN104 socket . Line-off trouble will be activated at the
NHX-50M when wires to NHR-SP are broken.
* The Shorting connector is kept in the CCU, attached to internal wires.
It is necessary only when wires to NHR-SP are broken.
To silence the tone, plug in the shorting connector until NHR-SP is
restored to normal operation.
– 18 –
WIRING DIAGRAMS
2. Zone lights
* Take G terminal to earth ground on each
PS-24E or PS-2420 power supply.
Zone light NHR-3A-4
NHX-80X
4
1
2
3
1
1
2
2
1
1
3
3
2
2
3
4
4
4
3
4
5
5
5
5
2
2
PS24
PS24
NHX-80X
Zone light NHR-3A-4
1
1
1
2
1
2
2
2
3
3
3
4
3
4
4
4
1
2
3
4
R1
R2
Orange
Yellow
Red
Orange
Yellow
Red
Orange
Yellow
Red
Orange
Yellow
Red
(Zone 1)
(Zone 2)
(+)
R3
R4
RC
Green
Blue
Green
Blue
Green
Blue
Green
Blue
(Zone 3)
(Zone 4)
(+)
Red
Red
Red
Red
Zone light
relay makes
contact
+
–
+
–
G
G
Do not connect two power
supplies in parallel.
Power supply
PS-24E or
PS-2420
Power supply
PS-24E or
PS-2420
Wiring on NHX-80X CCU
* Use UL Listed cable for all wiring.
To: Zone light
Cable
5 parallel conductors
Distance
165' w/18AWG
(50m w/1.0mmø)
* The NHX-80X zone light connection terminals (R1~R4, RC) are rated: DC 24V, 4A
Power supply for Zone light(s);
Use a power supply rated 24V DC, 2A. A second PS-24E or PS-2420 power supply
is required for Zone lights 3 & 4.
Lamp; Rated DC 24V ~, 100mA (each lamp).
Total 400mA per NHR-3A-4.
Ⅵ Schematic diagram of Zone light NHR-3A-4
Orange
Yellow
Red
Green
Blue
Red
– 19 –
WIRING DIAGRAMS
3. NHX-80X CCU to Sub stations
Sub stations NH-1SA/A, NH-1SA,
NH-2SA/A, NH-2SA or NHR-3TS
NHX-80X
1
2
3
9
10
6(3P)
Trunk 1
Trunk 2
Trunk 3
PS24
PS24
120V AC
Trunk 8
:PS-24E or
PS-2420
PS24
Take G terminal to earth ground on 2
power supplies.
To Subs block 1
Bedside Sub or Bathroom sub stations
★See page 16 for
actual terminal
block layout
NH-1SA/A
NH-1SA
NH-1SA/A
NH-1SA
NH-2SA/A
NH-2SA or
NHR-3TS
NH-1SA/A
NH-1SA
NH-2SA/A
NH-2SA or
NHR-3TS
NH-2SA/A
NH-2SA or
NHR-3TS
CCU
NHX-80X
Each pair:
polarized
CN1
CN2
CN1 Brown
Red
51
52
53
54
55
56
11
12
13
14
15
16
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
Orange
Yellow
Green
To Subs block 5
Blue
CN2 Purple
Z3 Z1
ZL
ZL
ZL
To Subs block 2
CN1
as above
61
62
63
64
65
66
21
22
23
24
25
26
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
To Subs block 6
CN2
as above
ZL
ZL
ZL
71
72
73
74
75
76
31
32
33
34
35
36
ZL terminal may be connected
to Z1 ~ Z4 terminal in NHX-80X,
depending on zone of patient station.
To Subs block 7
To Subs block 8
To Subs block 3
To Subs block 4
Trunk line from NHX-80X to sub stations should be
Aiphone specified cable or UL Listed cable
(3 twisted pair).
81
82
83
84
85
86
41
42
43
44
45
46
• If 4-zone lamp is included, use 4 twisted pairs.
• In a zone with more than 10 stations, additional
subs must be wired in a separate trunk line, but
the ZL line may be extended from any sub on the
previous trunk line.
• Permitted wiring distance to Sub stations;
165' with 22AWG, 50m with 0.65mm (from CCU to
farthest sub).
Max. 330', 100m total distance per trunkage line
(includes length of trunk line, plus wire length
T-tapped from junction point to each patient station
in the trunk line).
Z4 Z2
PS24
+
–
A+
A–
G
PS24
+
–
B+
B–
G
Do not connect two power supplies in parallel.
Power supply: PS-24E or PS-2420, DC24V, 2A
PS24
– 20 –
WIRING DIAGRAMS
4. Bedside sub stations w/Corridor lamp & Bathroom Pullcord
Bedside Sub stations: NH-1SA/A, NH-1SA,
Bathroom Call
Staff Call
NH-2SA/A or NH-2SA
1
2
9
NHR-3TS
10
NHR-3TS
NHX-80X
6(3P)
Trunk 1
Trunk 8
NHR-7A
3
3
3
3
3
PS24
PS24
120V AC
3
3
Men
NHR-7A
NHR-4A
NHR-4A
Women
Take G terminal to earth ground on 2
PS-24E or PS-2420 power supplies.
NHR-7A
NHR-7A
Bedside Sub stations: NH-1SA/A, NH-1SA,
NH-2SA/A or NH-2SA
1
2
CCU
NHX-80X
Each pair:
CN1
polarized
CN1
CN2
Brown
Red
Orange
Yellow
Green
Blue
11
12
13
14
15
16
1
2
3
4
5
6
1
2
3
4
5
6
To Subs
block 1
CN2
Z1
ZL
Purple
Brown
Brown
WL
(any zone)
Orange
White
Red
Corridor lamp
NHR-4A
Red
Orange
Red
RL
E
Orange
Master-CALL LED
Yellow
Green
TC
TL
Blue
Bathroom pullcord
(mechanical lock)
NHR-7A
Yellow
Blue
Green
Blue
E
Purple
LED
ZL
LC terminal is not used (not shown).
5. Bathroom call sub station: NHR-3TS
Staff Call (corridor)
Bathroom call (common area)
9
10
NHR-3TS
As many pullcords needed
can be connected to NHR-3TS.
NHR-3TS
CCU
NHX-80X
red
red
(*1)white
Each pair:
polarized
Master-CALL
lamp
CN1
CN1
1
NHR-7A
11
12
13
14
15
16
1
2
3
4
5
6
2
3
4
5
6
Yellow
Blue
Green
NHR-7A
LED
CN2
CN2
Brown
Red
Yellow
Blue
Z1
TC1
TL1
E
Blue
Brown
Red
Orange
(any zone)
TC1
TL1
E
Green
Blue
Urgent call switch
mechanical lock
LED
Orange
Men
Yellow
Green
Blue
LED
TC2
TL2
NHR-7A
Green
Yellow
Blue
Green
Blue
Blue
Yellow
(*1) On NHR-3TS for staff call, remove
the red cap on lamp inside.
Urgent staff call must be white
blinking light.
(*2) LC terminal is not used (not shown).
NHR-7A
Purple
ZL
Yellow
Blue
LED
Blue
Yellow
Green
Blue
Master-
CALL
LED
TC2
TL2
NHR-7A
Women
Green
Blue
Purple
ZL
LED
– 21 –
WIRING DIAGRAMS
Multi-Station Patient Room Applications
Multiple NH-1SA/A and NH-2SA/A bedside sub stations can also be installed
within a patient room. Observe the following conditions;
• Max. 6 bedside sub stations may be connected per room for max. 12 calls (when NH-2SA/A stations are used).
• A corridor lamp inside (NHR-4A) must not be connected with more than 4 bedside sub stations.
• Due to the above, install two NHR-4A corridor lamps when more than 4 sub stations are in one
room, i.e. two WHITE lamps used in one NHR-4A, and one RED bulb used in the other NHR-4A.
• NH-1SA/A and NH-2SA/A station numbers must be programmed in numerical order and
connected to the same subs trunk line.
• NHR-7A bathroom pullcord is optional.
1. Four bed application covered by four NH-1SA/A sub stations
with a common bathroom pullcord
NHX-80X
CCU
3P(or 4P)
Subs trunk line 1
3P(or 4P)
NHR-4A
NH-1SA/A
3 or 4
NH-1SA/A
NH-1SA/A
NH-1SA/A
3P×2
3P×2
3P×2
3
NHR-7A
(common
bathroom)
TO next patient room
Each pair: polarized
To Subs 11
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
CN1
block 1
12
13
14
15
16
NHR-4A
Brown
Orange
Red
Brown
Red
Brown
Brown
Brown
CN2
WL
WL
WL
WL
RL
E
RL
E
RL
E
RL
E
(*2) Orange
Orange
Orange
Orange
Yellow
Blue
Green
Blue
Orange
Yellow
Green
Blue
NHR-7A
TC
TL
E
TC
TL
E
TC
TL
E
TC
TL
E
(*1)
Z1
Purple
Purple
Gray
Purple
Gray
Purple
Gray
ZL
LC
ZL
LC
ZL
LC
ZL
LC
(*1) Terminal Z1 for lighting Lamp 1 in NHR-3A-4.
(*2) NHR-7A may be wired to any sub station convenient. Terminal RL is wired
only on the sub station which NHR-7A is connected to.
The above example shows a patient room with four beds, in which a common bathroom pullcord is used.
Multiple sub applications can be arranged in the following manner.
Beds in Room
2
Subs combinations
One NH-2SA/A or two NH-1SA/A
One each NH-2SA/A & NH-1SA/A
or three NH-1SA/A
Two NH-2SA/A or four NH-1SA/A
Two NH-2SA/A & one NH-1SA/A
Three NH-2SA/A
Beds in Room
Subs combinations
Three NH-2SA/A & one NH-1SA/A
Four NH-2SA/A
Four NH-2SA/A & one NH-1SA/A
Five NH-2SA/A
7
8
9
10
11
12
3
4
5
6
Five NH-2SA/A & one NH-1SA/A
Six NH-2SA/A
Note; Bedside sub station Models: NH-1SA and NH-2SA CANNOT be used in multiple bed patient rooms.
– 22 –
WIRING DIAGRAMS
Multi-Station Patient Room Applications
2. Max. 12 bed application covered by six NH-2SA/A sub stations
with or without a common bathroom pullcord
NHX-80X
CCU
Subs trunk line 1
3P(or 4P)
NH-1SA/A
NH-2SA/A
#1
(*) One red lamp
2 white lamps
NHR-4A
NHR-4A
#3
#2
3 or 4
3P×2
3P×2
3P×2
Left row
3
3P×2
Right row
NHR-7A
#6
#4
#5
(common
bathroom)
(*) Requried only when NHR-7A bathroom pullcord is used.
Right row of Bedside Subs
Left row of Bedside Subs
#1
#2
#3
#4
#5
#6
Each pair: polarized
To Subs
block 1
11
12
13
14
15
16
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
CN1
CN2
NHR-4A 1
Brown
Brown
Brown
Brown
Brown
Brown
WL
WL
WL
WL
WL
WL
(*3)
2 white
lamps
Orange
Red
RL
E
RL
E
RL
E
RL
E
RL
E
RL
E
Orange
Orange
Orange
Orange
Orange
Orange
NHR-4A 2
Red
TC
TL
E
TC
TL
E
TC
TL
E
TC
TL
E
TC
TL
E
TC
TL
E
1 red lamp
Orange
(*1)
Z1
Purple
Purple
Gray
Purple
Gray
Purple
Gray
Purple
Gray
Purple
Gray
ZL
LC
ZL
LC
ZL
LC
ZL
LC
ZL
LC
ZL
LC
NHR-7A
Yellow
Blue
Green
Blue
Notes:
(*1) Terminal Z1 for lighting Lamp 1 in NHR-3A-4.
1. In the above example, NHR-4A 2 is required only
when NHR-7A, bathroom pullcord is installed in
single and common bathroom.
2. Bedside sub stations Models: NH-1SA and NH-2SA
CANNOT be used in multiple bed patient rooms.
(*2) NHR-7A may be wired to any sub station convenient.
Terminal RL is wired only on the sub station which
NHR-7A is connected to.
(*3) Remove the red cap on a lamp inside.
– 23 –
4
MOUNTING
The NHX-80X should be mounted on either 3-gang box or on inside UL Listed electrical enclosure.
To open the front cover;
1. On the NHX-80X, pull at bottom of the cover and lift cover off the chassis.
2. Unplug CN-1~CN-5 connectors to disconnect from chassis.
Ⅵ Mounting NHX-50M on 3-gang box
Chassis mounts on “flush” box with no
extension or spacer.
Ⅵ Mounting NHX-80X inside Electrical Enclosure
The size of the electrical enclosure should be more than
23-5/8" H
19-11/16" W 4" D. 600H 500W 100D (mm) and with secured door.
(screwless wire terminations)
1. A suitable, non-combustible mounting surface
adequately sized must be attached inside the enclosure.
NHX-80X dimensions:
18-1/8" H
13-3/8" W 3-7/8" D. 460H
340W 98D (mm). 2. Cut off openings for cable inlet.
Conduits (optional)
3. Secure chassis with 4 wood screws : 4.1mm
ן 16mm. UL Listed
3-gang box
Cover
UL Listed
Electrical enclosure
WALL
Front cover
screws (2)
Screws (4)
Wood screws (4)
(when mounted
to wood backboard)
Power switch
Cover
Front cover
screws (2)
Power switch
NHX-80X
chassis
Ⅵ NHX-80X mounting example :
Underneath counter
Conduits
(optional)
NHX-50M console
NHX-80X should be mounted
on either 3-gang box or
non-combustible
mounting plane wall.
PS-24E
or
PS-2420
NHX-80X
Chassis
Door
Front cover
– 24 –
4. MOUNTING
Ⅵ Mounting NHX-50M master station
As shown, NHX-50M can be wired to NHX-80X CCU, using terminal cord supplied.
At NHX-50M end, plug in 10-pin connector.
to NHX-80X
CCU
Cable clamp
Terminal cord, approx. 6' 7" (2m)
To connect NHX-30G;
Cut off this part with a
cutter.
Cable clamp
NHX-50M
Chassis back view
10-pin plug-in socket
CN1
Ⅵ Assembling two Consoles: NHX-50M & NHX-30G
On the bottom of the NHX-50M, cut off the socket part and plug 2 connectors from the NHX-30G into the
socket. Mount the cover at 3 points, which connects NHX-50M & NHX-30G units together.
Yellow
CN3
Yellow
CN2
NHX-30G
NHX-50M
– 25 –
4. MOUNTING
Ⅵ 2-gang semi-flush mounting (NH-1SA, NH-2SA, NHR-SP, NHR-3TS)
The sub station flush-mounts in 2-gang box (UL Listed). Cover clicks to attach.
As shown terminate connector wires to the Trunk line with wire nuts, and plug into the socket.
2-gang box
Box must be more than 2" (50mm) deep.
3-5/16"
(83.5mm)
Sub station back case dimensions (in recess);
Screws(4)
H
W
D
H
W
D
NH-1SA/A,
68.5 86.5
35 2-11/16"
45 2-11/16"
Cover
e
(NH-2SA/A in this illustration)
Ⅵ Sub trunk line cabling
It is recommended to use a junction box to divide 3P trunk line to each Sub station.
Splice three cables together, i.e. Trunk line in & out cables and the cable going to the Sub at the Single-
gang box of Corridor lamp or 2-gang box for NHR-3TS.
Corridor lamp (for bedside sub)
NHR-3TS Sub
SINGLE-GANG-BOX
for corridor lamp
(2-gang box)
3P sub trunk
outgoing cable
3P sub trunk
incoming cable
3P sub trunk
incoming cable
3P sub trunk
outgoing cable
Splice three cables
together with wire nut
Splice three cables
together with wire nuts.
6 lead-wires from
6-pin connector
Separate cable for
lamp (3 cond.)
To: NH-1SA or NH-2SA
bedside sub station
NHR-3TS
- CAUTION: THE TOTAL SYSTEM CHASSIS RISK CURRENT SHOULD NOT EXCEED 500µA.
- ATTENTION: LE COURANT DE RISQUE TOTAL ADMISSIBLE AU CHASSIS NE DOIT PAS
DEPASSER 500µA.
– 26 –
4. MOUNTING
Ⅵ NHR-4A
1. Remove the lamp cover, pressing on both sides.
2. Terminate 3 wires from NH-1SA/A or NH-2SA/A
bedside sub.
3. Mount NHR-4A on 1-gang box with 2 screws
supplied.
SINGLE-GANG BOX
4. Reattach the lamp cover.
Ⅵ NHR-7A
SINGLE-GANG BOX
1. Terminate 3 wires from NH-1SA/A or NH-2SA/A.
bedside sub or NHR-3TS common area call station.
2. Mount NHR-7A on 1-gang box.
3. For bathroom call, tie up pullcord supplied.
Ⅵ NHR-3A-4
CEILING
1. Put number labels (1 ~ 4) on lamp covers.
2. Terminate 5 wires from NHX-80X as follows;
R1 to Orange (Zone 1)
5-GANG BOX
R2 to Yellow (Zone 2)
R3 to Green (Zone 3)
R4 to Blue (Zone 4) and
RC to Red (PS-24E
ם terminal) 3. Mount NHR-3A-4 to 5-gang box with 4 screws
supplied.
– 27 –
5
OPERATIONS on NHX-50M
At NHX-50M
Directory
Sub call-in LED
Sub Selector button
Speaker
Handset
Power on LED
Attendance LED
TONE-OFF button
Mic
TALK button
OFF
button
• Receiving a Routine Call (Bedside)
At NHX-50M
At site
When a Bedside sub station presses CALL button;
1. Single chime tone rings on NHX-50M every 6
seconds, and a call-in LED blinks slowly every 2
seconds.
2. Press TONE-OFF button to silence tone. The LED
above is lit.
At Zone light;
A corresponding zone lamp is steadily lit.
At corridor lamp;
White lamp is steadily lit.
3. Go to the Sub station. Press CANCEL button to reset.
At Sub station;
While NHX-50M is ringing, red CALL LED is lit, and
stays on even after TONE-OFF is pressed.
OR When NHX-50M replies, green ‘TALK’ LED is lit.
‘TALK’ LED goes out when communication is finished.
For communication;
1. Simply lift handset and communicate (voiceactuated).
Or press TALK button and communicate.
2. At conclusion, replace handset, or press OFF button.
• Receiving a Bathroom Pullcord Call (or call from NHR-3TS sub)
At NHX-50M
At site
When a cord is pulled at Bathroom;
1. Single chime tone rings on NHX-50M every 1.8
seconds, together with LED double blinking.
2. Press TONE-OFF button to mute. The LED above is
lit for attendance.
At Zone light;
Light will indicate which zone has a call placed.
At corridor lamp;
Red light blinks.
3. At Sub station, attendant unlocks CALL switch to
reset the call.
At Sub station;
Red CALL LED is lit.
* Communication is not available from Bathroom.
• Receiving a Cord-Out Trouble Call
At NHX-50M
At site
When a plug has been pulled out of jack;
1. Single chime tone rings on NHX-50M every 0.5
seconds, and a call-in LED blinks fast.
2. Press TONE-OFF button to silence tone. The
attendance LED is lit above.
At Zone light;
Light will indicate which zone has a call placed.
At Corridor lamp;
White light blinks.
3. At the Sub station, attendant may plug the pullcord
back into jack to reset the call.
At Sub station;
Red CALL LED is lit. When the pullcord is plugged in, all
lights are reset.
* To communicate, either lift handset or press TALK
button to establish channel.
– 28 –
5. OPERATIONS on NHX-50M
At NHX-50M
• Placing Call
At NHX-50M
At site
To call a Bedside Sub station;
1. Press a Sub selector button. The red LED is steadily
lit.
2. Lift handset and communicate, voice actuated.
OR Press TALK button to talk, and release to listen.
3. At conclusion, replace handset, or press OFF button.
At Zone light;
At Corridor lamp;
At Sub station;
Not lit.
Not lit.
Pre-tone sounds, and green TALK
LED is lit.Communicate
handsfree.
• Volume Adjustments
Speaker receive voice volume & call tone signal are
adjustable as needed on the left side of NHX-50M.
RECEIVE: 3 positions. TONE: 3 positions
RECEIVE VOL
High ꢀ Low
TONE VOL
High ꢀ Low
NHX-50M side view
• When multiple calls are received
Up to 5 calls from subs can be displayed simultaneously, and
additional calls are placed on hold (Zone light only will be
on). When a call is answered and reset, the next call on hold
will light on the NHX-50M, until all calls are answered.
• Other operations
1. Call-in during communication will activate both call tone &
LED.
2. While call tone is muted, call-ins will be annunciated by
tone & LED in the order of urgency first, then in the order
they were received.
At Duty Station
When a bedside or NHR-3TS sub station has placed any
type of call, the duty station indicates a Routine, Urgent
Bathroom call or Cord-out Trouble Call.
1. Call tone sounds, and CALL LED blinks.
2. Press TONE-OFF button to silence tone.
NHX-50M keeps on ringing.
At NHR-3TS Sub station
• Urgent Bathroom Call
Bathroom call sub station(NHR-3TS) is a 2-light corridor
lamp in the hallway and the NHX-50M acknowledges a call;
1. When a pullcord has activated an urgent call to the NHX-
50M, the NHR-3TS lamp blinks red.
2. Communication is not available. Wait for the attendant to
come to the location.
• Urgent Staff Call
1. Press or pull an urgent call switch connected to NHR-3TS.
2. NHR-3TS lamp starts blinking white.(Red lamp cover is
removed.)
3. Wait for the attendant to come to the location.
– 29 –
5. OPERATIONS on NHX-50M
Ⅵ Call tone & light annunciation
(*) Sound & LED time is approximate.
Light
Type of calling
Call tone
At NHX-50M Master station
• Receiving
Routine call
Single chime, every 6 sec.
Blinking, every 2 sec.
Double blinking, every 1.8 sec.
Blinking fast, every 0.4 sec.
Lit 0.2 sec., every 2 sec.
No light
Bathroom call (urgent) Single chime, every 2 sec.
Cord-out trouble call
Duty station from NHX-80X Faster buzzer, intermittent
Call tone (as above)
Single chime, every 0.5 sec.
Slow buzzer, intermittent
• Line-off trouble
• While talking
Call-in LED steadily lit
At NH-1SA/A, NH-1SA, NH-2SA/A or NH-2SA Bedside Sub station
• Placing
Routine call
–
–
CALL steadily lit
Not lit
Bathroom call (urgent)
CALL lit on Pullcord switch
CALL steadily lit.
CALL is off, and TALK is on.
TALK is on
Cord-out trouble call
–
• While talking
• When master calls in
–
Pre-tone
At NHR-4A Room Corridor lamp (white/red)
When Sub placed a call Routine call
–
–
–
–
White steadily lit
Red blinking
White blinking
Not lit
Bathroom call (urgent)
Cord-out trouble call
While talking
At NHR-3A-4 Zone light
• When Sub placed
Routine call
–
–
–
1 ~ 4 lamp turns on for any call from
Bedside sub or NHR-3TS.
Urgent call
Cord-out trouble call
At NHR-3TS sub station (w/corridor lamp) in Common area or Hallway
Placing
Bathroom call (urgent)
Staff call (urgent)
–
–
Red blinking on NHR-3TS
White blinking on NHR-3TS
At NHR-SP Duty station
• When Master received Routine call
Urgent call
Single chime, every 6 sec.
Single chime, every 2 sec.
Single chime, every 0.5 sec.
–
CALL blinking, every 2 sec.
CALL double blinking, every 1.8 sec.
CALL blinking fast,every 0.4 sec.
Not lit
Cord-out trouble call
While Master talking
Calling from NHX-50M
When NHX-50M has called a bedside Sub station, no light turns on on the corridor lamp, zone light and sub station
except TALK LED lit green on the sub station.
Temperatures
Call Holding
NHX-80X and NHX-50M are rated to operate at
temperatures 10˚C~49˚C(50˚F~120˚F).
Every Routine call is held electronically at bedside
sub station, and will be automatically connected
when handset is lifted or TALK button is pressed at
the NHX-50M. To reset the call, press CANCEL
button on the Sub station.
Cord-out trouble call is activated, the LED will
The call must be reset at the calling site.
Duty Station Operation
At NHR-SP, sub station call-in is annunciated by
tone & LED, which are the same as on
• The TONE-OFF button silences tone, but CALL
LED remains lit. When the NHX-50M begins
communication, both tone and LED are
• 90 seconds after the call tone is muted, it will ring
again. Press TONE-OFF button, and it will no
longer ring (tone will resume when another sub
calls).
– 30 –
6. TECHNICAL PRECAUTIONS
RESET switch
The NHX-50M is capable of having as many calls held
as there are sub stations. To reply to next call, hang up
and lift handset or press TALK button to establish
channel.
• If calls are of the same level; in the order of time of
call,
Do not use RESET switch except for initializing or
testing the NHX-80X. If RESET is pressed while a call
is being placed or a Bathroom call or Cord-out trouble
call has been placed, it will suspend the call.
• If calls are of different levels; in the order of urgency.
* Do not press RESET switch except when installing,
changing subs, or when system malfunctions.
Operational Modes in Multi-Station Patient Room
application
Adjusting Preset Volumes
When single or multiple calls have been placed from the
same patient room, corridor lamp will be activated as
follows;
On the bottom of the NHX-50M, adjust volume controls
to desired level.
* TRANSMIT: Adjusts the NHX-50M’s voice heard at
bedside sub.
* RECEIVE: Adjusts the speaker volume on NHX-50M.
Adjustable 3-position control on the left panel.
• PRE-TONE: Adjusts pre-tone to the desired level
heard at bedside sub.
• TONE: Adjusts initial call tone level. 3-position switch
varies volume from preset level (user-adjustable).
• DUTY STATION: Adjusts call tone level heard at Duty
Station
Type of calls placed
Corridor lamp
Sub1
Sub2
Sub3
Red
White
Routine
–
–
–
Blinking
–
Steady
–
–
Bathroom
–
–
–
Cord-out
–
Blinking
Steady
Blinking
Blinking
Blinking
Routine Bathroom
Blinking
–
Routine
–
–
Cord-out
When System Malfunctions;
Bathroom Cord-out Blinking
Routine Bathroom Cord-out Blinking
Call tone sounds on the NHX-50M without being called.
Call-in LED is lit, but no call tone.
In such occasions, check the status of system, and turn
power switch off and on again at the NHX-80X. If the
system does not return to normal operation, turn OFF
power switch and contact your installing dealer or
Aiphone.
Warning tone
(1) If a call has been left unanswered for 90 seconds,
the call tone volume will go up to HIGH level
regardless of the set position.
(2) If handset is left off the hook at NHX-50M for 90
seconds during communication, a warning
tone(steady) will be heard. Replace handset, and
the tone will stop.
Call priority:
1. Cord-out trouble call
2. Bathroom call, or NHR-3TS common area
bathroom call or staff call (urgent call),
3. Routine call
Line-off Trouble: Connector unplugged status on
Bedside or Bathroom call sub stations & Duty station
In Standby mode;
Priority is put in the order of Cord-out trouble call,
Bathroom call and Routine call.
Cord-out trouble call is put in first priority, and overrides
any other calls on the system.
When a buzzer warning tone (*) has been activated at
the NHX-50M, the wire connector is disconnected from
the back of the Sub station or Duty Station. The warning
tone cannot be silenced by TONE-OFF button. To mute
the slow buzzer (with a blinking call-in LED on the
corresponding Sub), either lift handset or press TALK
button. To mute faster buzzer with no LED lit, remount
the shorting connector (**) on CN104 at the NHX-80X.
The Duty Station will no longer be acknowledged. To
restore, call the installing dealer or Aiphone.
During communication;
The NHX-50M master station sounds an incoming call
tone while talking to another station, the same as in
standby mode. A new call doesn’t override an existing
conversation. Reply after concluding current call.
Up to 5 sub call-ins can be displayed on the selector
switch bank. All the calls placed are held in a queue,
and will resume light and tone at NHX-50M after each
previous call is concluded.
Momentarily hang up handset, and the next call tone is
audible. The sixth call will not illuminate on
NHX-50M nor on Corridor lamp (Only zone light will be
lit).
(*) Line-off Trouble detects disconnected status of 3, 4,
5 & 6 wires only on sub station.
(**) Shorting connector is attached to the internal wires
inside the NHX-80X.
– 31 –
6. TECHNICAL PRECAUTIONS
Other Operations
Fuse replacements
(1) On a corridor lamp, the white lamp steadily lit (during
routine call) may vary if another bathroom call or
cord-out trouble call has been placed in the same
trunk.
If either fuse blows, there is a problem with the system's
power or wiring. Turn power switch on NHX-80X off,
and call the installing dealer immediately. The cause of
the problem must be found and resolved before new
fuses are installed, restoring the system to normal
operation.
(2) A pullcord call in a bathroom illuminates the master
call indicator lamp on the panel.
Two UL Listed replacement fuses (250V AC, 3A) are
included in the NHX-80X.
If another call has been placed from a bathroom
nearby, the lamp will look dimmer on both units.
(NHX-80X)
• Power source:
NHX-80X: 24V DC.
• Current consumption: Max. 4A.
• Power supply:
Install two power supplies PS-24E or PS-2420 (Rated input 120V AC, 50/60Hz.
Rated output: 24V DC, 2A) to the NHX-80X.
All other accessories are powered by NHX-80X Central Control Unit except for
Zone light Model: NHR-3A-4.
50 sub stations (NHX-50M), plus 30 sub stations (NHX-30G).
Add NHR-30K when NHX-30G is included.
• Station capacity:
• Talk channel:
• Call-in priority:
Single and private.
1. Cord-out trouble call.
2. Bathroom call, room or common area, or NHR-3TS staff call (urgent call).
3. Routine call.
Use UL Listed twisted pair only copper conductor cable for all wiring.
6 (3P) looped, CCU to a trunk line of 10 subs.
10 (5P), CCU to NHX-50M.
• Wiring:
• Wiring distance:
22AWG
0.65mmø
CCU to farthest sub
Each sub trunk line must not exceed;
165’
330’
50m
100m
CCU to NHX-50M
65’
65’
20m
20m
CCU to Duty station
18AWG
165’
1.0mmø
50m
CCU to Zone light
CCU to Power supply
16’
5m
WARRANTY
Aiphone warrants its products to be free from defects of material and workmanship under normal use and service for a period of one year
after delivery to the ultimate user and will repair free of charge or replace at no charge, should it become defective upon which examination
shall disclose to be defective and under warranty. Aiphone reserves unto itself the sole right to make the final decision whether there is a
defect in materials and/or workmanship; and whether or not the product is within the warranty.
This warranty shall not apply to any Aiphone product which has been subject to misuse, neglect, accident, or to use in violation of
instructions furnished, nor extended to units which have been repaired or altered outside of the factory. This warranty does not cover
batteries or damage caused by batteries used in connection with the product.
This warranty covers bench repairs only, and any repairs must be made at the shop or place designated in writing by Aiphone.
Aiphone will not be responsible for any costs incurred involving on site service calls.
AIPHONE CO., LTD., NAGOYA, JAPAN
AIPHONE CORPORATION, BELLEVUE, WA, USA
AIPHONE EUROPE N.V., ANTWERP, BELGIUM
Printed in Japan(E)
– 32 –
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