©2021 EMS Ltd. All rights reserved. Page 8 of 14
TSD127-0001-99 (Issue 1) 05/05/2021 AJM
DC
POWER
0V V+
M
FAULT
OV V+
GEN
FAULT
A B
1
DC
POWER
0V
V+
M
FA
U
LT
OV
V+
GEN
FA
U
LT
A B
2
FAULT
NC C NO
RS232
FIRE
NC C NO
ACTIVE ACTIVE
FAULT FAULT
INPUT1 INPUT2
A B A B
DC
POWER
0V V+
M
FAULT
A B
GEN
FAULT
A B
1
POWER
0V
V+
GEN
FAULT
DC
POWER
0V
V+
M
FA
U
LT
A B
GEN
FA
U
LT
A B
2
Power
Supply
Unit
(PSU)
EN54-4 UNIVERSAL PSU
SC-60-1000
INPUT: 220-240VAC, 50Hz, 0.3A
OUTPUT: 5.0-8.5VDC, 0.8A MAX
INPUT
L N
For additional information refer to TSD042
0359-CPR-00267
15
0905
Earth wire
Neutral wire
Live wire
10b
Connection wiring
(24 VDC version only)
SKIP IF INSTALLING A
230 VAC VARIANT.
Cable glands should be
used.
DO NOT leave excess
cable in the control
panel.
Two fault inputs are
also available (black
terminal blocks). They
are labeled M Fault
(mains fault) and Gen
Fault (general / battery
fault).
If a fault input (GEN
FAULT or M FAULT) is
not being used, leave
the link as factory
fitted.
10
Connection wiring
(230 VAC version only)
24 VDC Dual
Output PSU
- +
24V Out
OUTPUT 1
N/O C N/C
Fault
- +
24V Out
N/O C N/C
Fault
OUTPUT 2
- +
24 V Out
OUTPUT 1
N/O C N/C
Fault
OUTPUT 2
- +
24 V Out
N/O C N/C
Fault
*
*
*
Additional Mains
Fault Input available
220 to 240
VAC mains
input
SKIP IF INSTALLING A 24 VDC VARIANT.
A 220 to 240 VAC supply is required.
Use cable with a minimum cross section of 1.5 mm
2
Connections must be made through a 20 mm cable entry
gland, incorporating cable clamp into the WZM.
An additional 15 mm of cable should be considered for the
earth connection to provide extra protection should the live
or neutral wires disengage.
This equipment relies on the building installation for
protection and requires a 5 A protection device which should
be labelled “Fire Alarm – Do Not Switch.
An all-pole mains switch should be provided as part of the building installation.
