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WITT-GASETECHNIK GmbH & Co KG
Salinger Feld 4-8
: +49 (0)2302 89010
www.wittgas.com
Gas Safety- & Control Equipment
D-58454 Witten
Fax: +49 (0)2302 89013
4.4
Function of the alarm module
The alarm module is used together with the pressure switches or pressure transmitters to monitor
the inlet pressures on a maximum of three gas inlets. An alarm is present if the pressure drops be-
low the minimum inlet gas pressure on at least one of the three gas inlets (see technical data). An
alarm is indicated on the LCD display and a floating contact switches.
In the case of the
GB
version the solenoid valve
(27)
also closes and the audible alarm device
(84)
emits an audible warning signal.
Note!
For more information see separate manual of the alarm module.
4.4.1
Technical data on the alarm module
Parameter
Connection Number
MIN
TYPE
MAX
Unit
Power supply
230 V
X1:1, X1:2
180
230
240
V (AC)
Powert consumption
5.0
VA
Working temperature
0
50
Degrees C
Rating of the floating
contacts
X1:4, X1:5, X1:6
250
2
24
2
V (AC)
A
V (DC)
A
Rating of the +24 V
connection
–
mA
4.4.2
The terminal strip (rear)
Power supply
GND / alter-
nating signal
Alarm relay connections
Digital inputs
Output
Neutral
wire
Phase
On alarm
alternating
signal
Centre
contact
No
alarm
Alarm IN 1 IN 2 IN 3
+24V
N
L1
C
NO
NC
X1:
1
2
3
4
5
6
7
8
9
10
Note!
In case of an alarm the connection X1:3 switches cyclically.
PvDu
GB