Burkert Type 8041 - Manual (Page 28)

26
INstallation
8.3.3. Wiring the relay output
The relay output operates either in normally open mode (NO) or in
normally closed mode (NC), depending on the connection of the
load to the electronic board of the device.
→
Protect the relay with a fuse (3 A max.) and, depending
on the application, with a circuit breaker.
Do not apply both a dangerous voltage and a safety extra low
voltage (SELV) to the relay.
→
Wire the relay output to operate in normally open mode
(see Fig. 24) or in normally closed mode (see Fig. 25).
→
Earth the device (see Fig. 24 or Fig. 25).
250 VAC
300 mA
8041
NO
C
NC
3 A
+ -
18-36 VDC
L
N
4...20 V+ V-
1 3 4 5 6 2
PE Pls+Pls-
250 VAC, 3 A max.
*
Solenoid valve
(or alarm)
Power supply
Protection circuit
Relay protection cap
* If direct earthing is not possible, connect a 100 nF / 50 V condensator
between the negative terminal of the voltage supply and the earth.
Fig. 24: Connection of the relay output for a normally open
operating
English
Type 8041