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Concept

Concept


Products: MP-V
Functionalities: Hardware
Product version: 2.0, 2.1, 3.0, 3.1, 3.2, 3.3, 2022, 2023, 2024, 7.0
2/13/2024

Wire Sizes and Lengths for the MP-V Controllers

This section provides recommendations on wire sizes and lengths for the MP-V controllers.

For more information, see MP-V Models .

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

Table: Wire Sizes and Lengths for the MP-V Controllers

Terminals

Minimum Cross-sectional Area

Maximum Cable Length

Power input terminal (1)

0.75 mm² (18 AWG) a

6 m (20 ft) to local 24 VAC transformer

Earth ground terminal (2)

0.75 mm² (18 AWG) a

Protective earth ground connection on or within the controller panel

Universal inputs as digital b inputs

0.34 mm² (22 AWG)

200 m (650 ft)

Universal inputs as analog c inputs

0.34 mm² (22 AWG)

100 m (330 ft)

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

0.75 mm² (18 AWG)

75 m (250 ft)

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

1.5 mm² (15 AWG)

150 m (500 ft)

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

1.5 mm² (15 AWG)

75 m (250 ft)

Analog d outputs and universal inputs, for actuators and transmitters powered from the same transformer as the controller

0.75 mm² (18 AWG)

20 m (65 ft)

Analog d outputs and universal inputs, for actuators and transmitters powered from their own transformer (external or internal)

0.34 mm² (22 AWG)

200 m (650 ft)

Analog d outputs, for actuators powered from their own transformer (external or internal) or when the outputs have isolated converters

0.34 mm² (22 AWG)

200 m (650 ft)

Triac outputs

According to local wiring rules e

According to local wiring rules e

  1. Use wires rated for at least 90 °C (194 °F).
  2. Digital or counter inputs.
  3. Supervised, voltage, current, resistive, or 2-wire RTD temperature inputs.
  4. Voltage or current outputs.
  5. 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.

See Also

  • I/O Wiring
  • Wire Sizes and Lengths
  • MP-V Controllers
  • MP-V Models
  • MP-V Screw Terminals
  • Wiring
  • Grounding and Power for Systems with MP Controllers