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WAGO-I/O-SYSTEM 750
750-316/300-000 Fieldbus Coupler MODBUS RTU
System Description 31
3.5.6 Power Supply Unit
The WAGO-I/O-SYSTEM 750 requires a 24 VDC voltage (system supply).
Recommendation
A stable power supply cannot always be assumed everywhere. Therefore, you should use regulated power supplies to ensure the quality of the supply voltage
(see also table “WAGO power supply units”).
For brief voltage dips, a buffer (200 µF per 1 A load current) must be provided.
Power failure time not acc. IEC 61131-2!
Note that the power failure time of 10 ms acc. IEC 61131-2 is not maintained in a maximum configuration.
The power demand must be determined individually depending on the entry point of the field supply. All loads through field devices and I/O modules must be taken into account. The field supply also impacts the I/O modules because the input and output drivers of some I/O modules require the voltage of the field supply.
System and field supply must be isolated!
The system supply and field supply must be isolated to ensure bus operation in the event of short circuits on the actuator side.
Table 9: WAGO Power Supply Units (Selection)
Description WAGO Power
Supply Unit
787-612
787-622
Primary switched mode;
DC 24 V; 2,5 A Input nominal voltage AC 230 V
Primary switched mode;
DC 24 V; 5 A Input nominal voltage AC 230 V
787-632
288-809
288-810
288-812
288-813
Primary switched mode;
DC 24 V; 10 A Input nominal voltage AC 230/115 V
Rail-mounted modules with universal mounting carrier
AC 115 V/DC 24 V; 0,5 A
AC 230 V/DC 24 V; 0,5 A
AC 230 V/DC 24 V; 2 A
AC 115 V/DC 24 V; 2 A
Manual
Version 1.0.0
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