Instruction manual

Appendix A
Wiring an AlarmSaf RBKS module to a PS2/3/5 Voltage Fault Output
In order to get a usable signal from the voltage fault output on a PS2/3/5, it must be connected to an
AlarmSaf RBKS module in the proper configuration. The following RBKS modules may be used with
the voltage fault output:
y RBKS-124P NOT
Fail Safe
y RBKS-124N Fail Safe
y RBKS-10 Fail Safe when using the Negative Trip Input only
Note - The RBKS-124P does not provide a fail safe indication - the relay will only indicate a fault
condition if a source of power (Battery / AC power) is present. If a total loss of battery and AC power
occurs, the relay will not indicate a fault.
Note - The voltage fault output will only supply a very low current. It will not power a relay coil -
even a low-current relay coil. This output must be used with a sensitive trip relay.
Note - When wiring a fail safe relay configuration, the resistor shown is essential to the operation of
the relay and cannot be omitted. The resistor value can be between 1K and 100K 1/4W.
Figure A.1
TB2
S1
AC FLT
DC FLT
24/12V
DC
OUTPUT
FAULT
OUTPUT
AlarmSaf
1
2
3
4
1, 2 OPEN = 24V
3 OPEN = DC FLT DISABLE
4 OPEN = AC FLT DISABLE
+
-
+
-
T
PWR-
C
C
NCNC
NONO
PWR+
FORM ‘C’
FAULT
OUTPUT
RBKS-124P
TB2
S1
AC FLT
DC FLT
24/12V
DC
OUTPUT
FAULT
OUTPUT
AlarmSaf
1
2
3
4
1, 2 OPEN = 24V
3 OPEN = DC FLT DISABLE 4 OPEN = AC FLT DISABLE
+
-
+
-
T
PWR-
C
C
NCNC
NONO
PWR+
FORM ‘C’
FAULT
OUTPUT
10K-1/4W
RESISTOR
RBKS-124N
PS2/3/5 Installation Instructions
8/23/2007, 2:51:41 PM
52-133 Rev B.01
Page 15 of 16
AlarmSaf 65A Industrial Way, Wilmington, MA 01887 978 658 6717 www.alarmsaf.com