NHX
0708
Nurse Call System
All Call Adaptor for NHX System
1 NH-50AC for All Call up to 49 Stations, 2 NH-50AC for up to 79 Stations
- INSTRUCTIONS -
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.
* 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.
WIRING DIAGRAM:
Trunk #1
Patient Stns*
NH-50AC
NHX-80X
Brn
Brn
Red
Blk
11
12
1B
1R
BL
2B
2R
BL
3B
3R
BL
4B
4R
BL
11
12
~
Red
Trunk #2 Patient
Stns*
Gray
Brn
Brn
Red
Blk
21
22
21
22
~
Trunkage Line
Connection
Terminals
Red
Gray
Trunk #3 Patient
Stns*
Brn
Red
Gray
Brn
Red
Blk
31
32
31
32
~
41
42
~
Trunk #4 Patient
Stns*
Brn
41
42
Brn
Red
Blk
Red
Gray
Trunk #5
51
52
51
52
Patient Stns*
Brn
Brn
Red
Blk
Org
Yel
5B
5R
BL
Red
Gray
Org
A1
A2
P3
P4
D5
D6
53
54
55
56
Yel
Grn
Blu
Grn
Blu
To 2nd NH-50AC
X1
(For 50-79 station system)
PS-1225UL
Connections to 2nd NH-50AC:
X1: Control wire
+
-
+
-
Jumper to
Negative of
one PS-2420UL
A1: Audio
To AUX input of 2nd NH-50AC
}
A2: Audio
12V+: Power
12V-: Ground
AUX
NOTES:
IMPORTANT:
1. The application requires one of the station buttons to be
used for All Call.
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).
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.
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