Power Supply - WAGO -I/O-SYSTEM 750 User's Installation And Configuration

2.4 Power supply

Fig. 2-10: Power supply
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.
Modular I/O System
ETHERNET TCP/IP
1
750-400 750-410 750-403
~
24V 24V 230V
The WAGO-I/O-SYSTEM 750 • 11
2
750-612 750-512 750-512 750-513 750-616 750-454
Power supply
750-467 750-461 750-550 750-610 750-552 750-630
24V
750-650 750-600
g01xx02x