Connecting A Fire Alarm System Emergency Release; Circuit To Prevent Opening If Power Supply Should Fail - Simons Voss Technologies SOM + SREL3.ADV Manual

SOM + SREL3.ADV

9.2 Connecting a fire alarm system emergency release

9.3 Circuit to prevent opening if power supply should fail

(Manual)
C
A
B
I+
I-
Out
SmartOutput
module
-
A-
L K1
N A+
Power supply
unit
+ +
- K2
If the relay in the fire alarm system opens, this interrupts the SmartOutput
module's power supply, closing Outputs 1 to 8.
Fire alarm
system
1
Break contact
2
L
N
Power supply
unit
+
-
The AUX relay can be used in conjunction with the low voltage switching
output (OUT) to prevent actuators, such as a buzzer or an electric strike,
from switching of their own accord if the power supply to the SmartOutput
module is interrupted. This ensures that actuators will not be powered and
will not switch either if the SmartOutput module's power supply fails. This
circuit is suitable for handling power supply failures in the SmartOutput
module.
SmartOutput module IN-AUX
supply
IN-AUX
+
VDC
12 VDC
OUT
-
GND
Simplified diagram (de-energised state)
9. Connection to the SmartRelay
C
A
B
I+
I-
Out
SmartOutput
module
-
A-
K1
A+
+
K2
SmartOutput module
AUX relay
contact
AUX relay
NO
VDC
S5
Switching
VDC < 10 V
contact
OUT = GND
e.g. 5 (NC)
Actuator supply
Actuator +
AK1
AK2
24 VDC
K5.1
-
K5.2
16 / 27