The WAGO-I/O-SYSTEM 750 • 11
Power supply
Modular I/O System
ETHERNET TCP/IP
2.4 Power
supply
750-630
750-650
750-400
750-410
750-403
750-454
750-467
750-461
750-612
750-512
750-512
750-513
750-610
750-552
750-550
750-600
750-616
~
24V 24V
24V
230V
1
2
Fig. 2-10: Power supply
g01xx02x
1 – Power supply System
2 – Power supply Field-side
The power supply on the field side is electrically isolated from the system sup-
ply. In this manner sensors and actuators can be supplied and fused by a sepa-
rate voltage source.
If a non-regulated power supply is used for the coupler/controller electronics
24 V voltage supply, it must be filtered through a capacitor (200 µF per 1 A
load current). A back-up capacitor module (Order-No. 288-824) was devel-
oped for the WAGO-I/O-SYSTEM. This module serves to regulate a noisy
24 V DC voltage supply and to keep the ripple voltage within specified limits.
These fluctuations could be caused by a voltage interruption on the primary
side, a secondary side overload or the switching of ”non quenched“ inductance
or capacitance.
Warning
The supply module’s + and –, which are permanently integrated on the
buscouplers, must be supplied with 24 V DC only.
120 V AC and 230 V AC can only be supplied via modules 750-609, 750-611
and 750-612!
Warning
The ground (earth) field side contact should be disconnected when testing the
isolation. Otherwise the results could be wrong or the module could be de-
stroyed.