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Concept

Concept


Products: RP-C
Functionalities: Hardware
Product version: 2022
2/13/2024

Wire Sizes and Lengths for the RP-C 230 V Controller Models

This section provides recommendations on wires sizes and lengths for the RP-C 230 V controller models.

For more information, see RP-C Models .

The recommendations are for guidance only. Other wire sizes and lengths may be used, depending on wiring rules and when appropriate.

Note:

Screw terminal number 3 differs between different hardware versions of the controller model RP-C-16A-F-230V. For more information, see Differences Between RP-C Hardware Versions .

Table: Wire Sizes and Lengths for the RP-C 230 V Controller Models

Terminals

Minimum Cross-sectional Area

Maximum Cable Length

Power input terminals (1, 2)

0.75 mm² (18 AWG) a or larger according to local wiring rules

According to local wiring rules

Protective earth ground terminal (3)

0.75 mm² (18 AWG) a or larger according to local wiring rules

According to local wiring rules

24 VAC output terminals (4, 5)

0.5 mm² (20 AWG)

According to local wiring rules

Universal inputs/outputs as digital b inputs

0.34 mm² (22 AWG)

200 m (650 ft)

Universal inputs/outputs as analog c inputs

0.34 mm² (22 AWG)

100 m (330 ft)

Universal inputs/outputs as temperature (thermistor) inputs, up to 75 °C (167 °F)

0.75 mm² (18 AWG)

75 m (250 ft)

Universal inputs/outputs as temperature (thermistor) inputs, up to 75 °C (167 °F)

1.5 mm² (15 AWG)

150 m (500 ft)

Universal inputs/outputs as temperature (thermistor) inputs, up to 150 °C (302 °F)

1.5 mm² (15 AWG)

75 m (250 ft)

Universal inputs/outputs, for actuators and transmitters powered from the same transformer as the RP-C

0.75 mm² (18 AWG)

20 m (65 ft)

Universal inputs/outputs, for actuators and transmitters powered from their own transformer (external or internal)

0.34 mm² (22 AWG)

200 m (650 ft)

Universal inputs/outputs as voltage outputs, for actuators powered via their own transformer (external or internal) or when the outputs have isolated converters

0.34 mm² (22 AWG)

200 m (650 ft)

Relay outputs

According to local wiring rules d

According to local wiring rules d

High power relay output

According to local wiring rules d

According to local wiring rules d

Solid-state relay (SSR) outputs

0.5 mm² (20 AWG) d

According to local wiring rules d

  1. Use wires rated for at least 75 °C (167 °F).
  2. Digital or counter inputs.
  3. Supervised, voltage, current, resistive, or 2-wire RTD temperature inputs.
  4. Confirm the voltage drop from the external load current and the wire resistance (the product of the wire size and length) to obtain the appropriate voltage arriving at the controlled field device (load), to reliably energize and maintain the control action.
  • I/O Wiring
  • Wire Sizes and Lengths
  • Wire Sizes and Lengths for the RP-C 24 V Controller Models
  • RP-C Controllers
  • RP-C Models
  • RP-C Screw Terminals
  • Wiring
  • Differences Between RP-C Hardware Versions