Power Supply; Safety Wiring; Input Point Wiring - Delta DVP-20PM Instruction Sheet

1. Use O-type or Y-type terminal. See the figure in the right
hand side for its specification. PLC terminal screws
should be tightened to 9.50 kg-cm (8.25 in-Ibs) and
please use only 60/75ºC copper conductor.
2. DO NOT wire empty terminal. DO NOT place the input signal cable and output
power cable in the same wiring circuit.
3. DO NOT drop tiny metallic conductor into the PLC while screwing and wiring. Tear
off the sticker on the heat dissipation hole for preventing alien substances from
dropping in, to ensure normal heat dissipation of the PLC.

Power Supply

The power input type for DVP-20PM 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 to 240 VAC. 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 0.5 A from MPU. DO NOT connect other external power
supplies to this terminal. Every input terminal requires 6 to 7 mA to be driven; e.g. the
16-point input will require approximately 100 mA. Therefore, +24V terminal cannot
give output to the external load that is more than 400 mA.

Safety Wiring

In PLC control system, many devices are controlled at the same time and actions of any
device could influence each other, i.e. breakdown of any device may cause the
breakdown of the entire auto-control system and danger. Therefore, we suggest you
wire a protection circuit at the power supply input terminal. See the figure below.
AC power supply: 100 to 240 VAC, 50/60Hz
Emergency stop: This button cuts off the system power supply when accidental
emergency takes place.
Power indicator
Power supply circuit protection fuse (2A)
DC power supply output: 24 VDC, 500 mA

Input Point Wiring

Breaker
AC power supply load
DVP-PLC (main processing unit)
- 4 -
Below
6.2 mm
To suit M3.5
screw terminals
Below
6.2 mm