Conceito
Wire Sizes and Lengths for the MP-V Controllers
This section provides recommendations on wire sizes and lengths for the MP-V controllers.
Para mais informações, consulte MP-V Models .
The recommendations are for guidance only. Other wire sizes and lengths may be used, depending on wiring rules and when appropriate.
|
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 |
- Use wires rated for at least 90 °C (194 °F).
- Digital or counter inputs.
- Supervised, voltage, current, resistive, or 2-wire RTD temperature inputs.
- Voltage or current outputs.
- 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
MP-V Controllers
MP-V Models
MP-V Screw Terminals
Wiring
Grounding and Power for Systems with MP Controllers