Power Supply - Weidmuller SAI Active Universal Pro Series Manual

3.2

Power supply

Gateway I/O
The gateway I/O modules are supplied with power
by an M12 A-encoded connector. With this you can
provide power to two different potentials. These
voltages can be connected with the help of a jumper
in the address range.
Extension I/O without outputs
These modules get their power supply from the 4-
pole M8 combi-cable. The electronics and the inputs
are both supplied with this UI potential.
Extension I/O with outputs
The modules with digital outputs are easy to identify
with their extra M12 plug. This is where the power is
fed in for the outputs. The electronics and the inputs
are also supplied with the M8 combi-cable.
CAUTION
No external voltage should be applied to
the outputs.
Current carrying capacity
The connector can carry up to 3 A DC per pin. This
limits that total number of loads on a sub-bus sys-
tem.
In order to calculate the required current, the follow-
ing values must be added up:
• The power consumption of the extension I/O mod-
ule
• The current requirement of each individual input
5663600000/1.4/09.09
Project Planning with the Universal Pro
Current requirement of the extension I/O mod-
ules
1938600000 The 8DI M8 sub-bus
module
1938610000 The 8DI M12 sub-bus
module
1938630000 The 8DI/DO M8 sub-bus
module
1938640000 The 8DI/DO M12 sub-
bus module
1938660000 The 8DO M8 2A sub-
bus module
1938680000 The 8DO M12 2A sub-
bus module
1938690000 The AI M12 sub-bus
module
1938700000 The AO M12 sub-bus
module
1938710000 The PT100 M12 sub-
bus module
1938720000 The Thermal M12 sub-
bus module
1938730000 The Counter M12 sub-
bus module
Table 2 Current requirement of the extension
I/O modules
Please refer to the sensor manufacturer's data
sheet, for the current requirement of the sensors.
The maximum current-carrying capacity of the digital
inputs in 50 mA.
CAUTION
The residual current should not be more
than 3 amps higher than the max. cur-
rent-carrying capacity of the connector.
50mA
50mA
50mA
50mA
50mA
50mA
50mA
50mA
50mA
50mA
50mA
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