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-INSTRUCTIONS -
WIRING DIAGRAM:
All Call Adaptor for NHX System
1 NH-50AC for All Call up to 49 Stations, 2 NH-50AC for up to 79 Stations
NHX-80X
11
12
~
21
22
~
31
32
~
41
42
~
51
52
53
54
55
56
NOTES:
1. The application requires one of the station buttons to be
used for All Call.
Therefore, the standard system can have up to 49 stations,
and the expanded system can have up to 79 stations.
2. Only wiring concerning the NH-50AC is shown here. For
complete installation and wiring information, please see the
NHX Installation instructions.
PS-1225UL
+
-
Trunkage Line
Connection
Terminals
Some applications for Nurse Call systems require All Call. By including this adaptor, a station button on the master
can be used to call all of the patient stations simultaneously. An additional wire is required to each patient station.
NOTE: An NHX system installed with an NH-50AC included does not carry the UL 1069 listing.
NHX
Nurse Call System
11 1B
12 1R
BL
21 2B
22 2R
BL
31 3B
32 3R
BL
41 4B
42 4R
BL
51
52
5B
A1 5R
A2 BL
P3
P4
D5
D6
X1
+
-
AUX
NH-50AC
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Blk
Trunk #1
Patient Stns*
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Red
Blk
Trunk #2 Patient
Stns*
Trunk #5
Patient Stns*
Connections to 2nd NH-50AC:
X1: Control wire
A1: Audio
A2: Audio
12V+: Power
12V-: Ground
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Gray
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* Patient Stations for All Call:
Model NH-1SA/AC or NH-2SA/AC.
Additional BLACK wire coming from back of
unit connects to Gray wire of trunkage cable,
and to BL terminal of NH-50AC.
IMPORTANT:
Connection from CCU trunk line terminals determines which
column the All Call button will be on. (e.g. This example
shows trunk line 5, so All Call button will be on column 5 of
master station. Dip switch settings on the NH-50AC will
designate the All Call button position (1~10).
Pg. 1
Org
Yel
Grn
Blu
Brn
Red
Blk
Trunk #3 Patient
Stns*
Trunk #4 Patient
Stns*
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Gray
Brn
Red
Blk
Brn
Red
Blk
Org
Yel
Grn
Blu
Jumper to
Negative of
one PS-2420UL
0708
To AUX input of 2
nd
NH-50AC
To 2
nd
NH-50AC
(For 50-79 station system)
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