Installation, Wiring,
and Specifications
2–11
Installation, Wiring, and Specifications
12/24 VDC Operation
When operating at these lower DC voltages, wire gauge size is just as important as
proper fusing techniques. Using large conductors minimizes the voltage drop in the
conductor. Each DL05 input power terminal can accommodate one 16 AWG wire or
two 18 AWG wires. A DC failure can maintain an arc for much longer time and
distance than AC failures. Typically, the main bus is fused at a higher level than the
branch device, which in this case is the DL05. The recommended fuse size for the
branch circuit to the DL05 is 1A (for example, a Littlefuse 312.001 or equivalent).
The power source must be capable of suppling voltage and current complying with
individual Micro PLC specifications, according to the following specifications:
Item DL05 VAC Powered Units DL05 VDC Powered Units
Input Voltage Range 110/220 VAC (95–240 VAC) 12–24 VDC (10.8–26.4 VDC)
Maximum Inrush Current 13 A, 1ms (95–240 VAC)
15 A, 1ms (240–264 VAC)
10A
Maximum Power 30 VA 20 W
Voltage Withstand (dielectric) 1 minute @ 1500 VAC between primary, secondary, field
ground
Insulation Resistance > 10 M at 500 VDC
NOTE:The rating between all internal circuits is BASIC INSULATION ONLY.
The following guidelines provide general information on how to wire the I/O
connections to DL05 Micro PLCs. For specific information on wiring a particular PLC
refer to the corresponding specification sheet further in this chapter.
1. Each terminal connection of the DL05 PLC can accept one 16 AWG wire or
two 18 AWG size wires. Do not exceed this recommended capacity.
2. Always use a continuous length of wire. Do not splice wires to attain a
needed length.
3. Use the shortest possible wire length.
4. Use wire trays for routing where possible.
5. Avoid running wires near high energy wiring.
6. Avoid running input wiring close to output wiring where possible.
7. To minimize voltage drops when wires must run a long distance , consider
using multiple wires for the return line.
8. Avoid running DC wiring in close proximity to AC wiring where possible.
9. Avoid creating sharp bends in the wires.
10. Install the recommended powerline filter to reduce power surges and
EMI/RFI noise.
External
Power Source
Planning the
Wiring Routes
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