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Power Supply
The power input type for DVP-EH3 series is AC input. When operating the PLC, please
note the following points:
1. The input voltage should be current and its range should be 100 ~ 240VAC. The
power should be connected to L and N terminals. Wiring AC110V or AC220V to +24V
terminal or input terminal will result in serious damage on the PLC.
2. The AC power input for PLC MPU and I/O modules should be ON or OFF at the
same time.
3. Use wires of 1.6mm (or longer) for the grounding of PLC MPU.
4. The power shutdown of less than 10 ms will not affect the operation of the PLC.
However, power shutdown time that is too long or the drop of power voltage will stop
the operation of the PLC and all outputs will go OFF. When the power returns to
normal status, the PLC will automatically resume operation. (Care should be taken
on the latched auxiliary relays and registers inside the PLC when programming).
5. The +24V output is rated at 0.5A from MPU. DO NOT connect other external power
supplies to this terminal. Every input terminal requires 6 ~ 7mA to be driven; e.g. the
16-point input will require approximately 100mA. Therefore, +24V terminal cannot
give output to the external load that is more than 400mA.
Input Point Wiring
There are 2 types of DC inputs, SINK and SOURCE. (See the example below. For
detailed point configuration, please refer to the specification of each model.)
y DC Signal IN – SINK mode
Input point loop equivalent circuit
+24V
24G
S/S
X0
24VDC
X1
[ Figure 5 ]
y DC Signal IN – SOURCE mode
Input point loop equivalent circuit
+24V
24G
S/S
X0
24VDC
X1
[ Figure 6 ]
Wiring of Differential Input
X0 ~ X1 and X4 ~ X5 of DVP32EH00M3/MT are all high-speed input circuit and others
are DC24V input. The working frequency of high-speed input circuit can reach up to
200kHz and is mainly for connecting to differential (double-wire) LINE DRIVER output
circuit.
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