E31.0.12.6C-06
Mounting and operating manual GIA 20 EB with electrically insulated supply
page 13 of 32
5.4. Connecting switching outputs
In order to avoid unwanted or wrong switching processes, we suggest to
connect the device’s switching outputs after you have configured the device’s
switching outputs properly.
Please take care that you must not exceed the limits of the voltage and of the
maximum current of the switching outputs (not even for a short period of
time). Please take extreme care when switching inductive loads (like coils or
relays, etc.) because of their high voltage peaks, protective measures to limit
these peaks have to be taken.
When switching large capacitive loads a series resistor for current limitation
needed, because of the high turn-on-current of high capacitive loads. The
same applies to incandescent lamps, whose turn-on-current is also quite high
due to their low cold resistance.
In case of configuring one output as an alarm output, the output will be active in idle
state (no alarm present). The output transistor opens or the push-pull output chang-
es from +9V to 0V when an alarm condition occurred
5.4.1. Switching option
Low-Side
“GND-switching“ NPN
output (open-collector)
The switching output is connected to GND
(connection 5) when active (switching output
on).
High-Side
“+Us-switching“ PNP
output (open-collector)
The switching output is connected to an inter-
nal voltage (about +9V) when active (switching
output on).
Push-Pull
The switching output is connected to GND
(connection 5) when inactive. When the switch-
ing output is active, it’s connected to an inter-
nal voltage (about +9V).
5.4.2. Connection with configured low-side-switching output
(NPN output, switching to GND)
Connection of consumer loads (relay and lamp)
Connection of consumer loads (relay and lamp)
(without individual supply voltage)
(with individual supply voltage)
+
_
S
upply
1
2
3
4
5
+
-
R
elay
+
_
S
upply
+
_
S
upply
for load
1
2
3
4
5
+
-
R
elay
