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How to

How to


Products: RP-C
Functionalities: Hardware
Product version: 3.0, 3.1, 3.2, 3.3, 2022, 2023, 2024
3/30/2023

Wiring a Screw Terminal on RP-C

You wire the screw terminals on the RP-C to connect I/O devices and power. Always use the recommended wires (or wires with larger cross-sectional area).

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The RP-C can be installed on a DIN rail or flat surface.

The RP-C must be professionally installed to comply with the following rules and regulations:

  • Part 15 of the Federal Communications Commission (FCC) rules

  • Innovation, Science and Economic Development Canada (ISED) licence-exempt Radio Standards Specifications (RSSs)

  • 2014/53/EU Radio Equipment Directive (RED) of the European Union (EU).

For more information, see RP-C Regulatory Compliance and Approvals .

The RP-C and its antenna(s) must be installed to provide a separation distance of at least 20 cm (8 in.) from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. Information on recommended RF exposure limits can be obtained from Health Canada's website, www.canada.ca/en/health-canada .

A DIN rail is a common and convenient technique for installing the RP-C along with other associated control and monitoring devices. The most efficient ventilation is achieved with the wall-mounted DIN rail oriented horizontally and with adequate space provided between the RP-C rail and adjacent rails or other devices.

The RP-C is typically installed horizontally (on a DIN rail going from left to right), with the device label text in the upright position reading left to right.

 
action_zoom_plus_stroke RP-C installed on a horizontal DIN rail
Figure: RP-C installed on a horizontal DIN rail

The restrictions on installing the device in other orientations differ between the different RP-C controller models.

Notice

CONTROLLER DAMAGE

Follow the installation orientation restrictions that apply to the specific RP-C controller model.

Failure to follow these instructions can result in equipment damage.

Under normal operating conditions of 0 to 50 °C (32 to 122 °F), the RP-C-12A, -12B, and -12C models can be installed in the following orientations:

  • Horizontally (on a DIN rail going from left to right), with the device label text in the upright position reading left to right. See “a” in the following figure.

  • Vertically (on a DIN rail going from top to bottom), which means that the device is rotated +90 degrees or -90 degrees from the horizontal position. See “b” and “c” in the following figure.

  • Face down from a ceiling. See “d” in the following figure.

  • Face up on a horizontal surface. See “f” in the following figure.

The only installation orientation that is not supported for the RP-C-12A, -12B, and -12C models is when the device is rotated 180 degrees from the horizontal position, that is, with device label text up and down. See “e” in the following figure. In the up and down position, the controller's thermal specifications may be exceeded, which can damage the controller.

 
action_zoom_plus_stroke Installation orientation restrictions for RP-C-12A, -12B, and -12C models operated in normal conditions, 0 to 50 °C (32 to 122 °F)
Figure: Installation orientation restrictions for RP-C-12A, -12B, and -12C models operated in normal conditions, 0 to 50 °C (32 to 122 °F)

When the RP-C-12A, -12B, and -12C models are used for rooftop applications, -40 to +60 °C (-40 to +140 °F), the device should be installed horizontally, with the device label text in the upright position reading left to right. See “a” in the following figure. Any other installation orientation (“b”, “c”, “d”, “e”, and “f” in the figure) may exceed the controller's thermal specifications, which can damage the controller.

 
action_zoom_plus_stroke Installation orientation restrictions for RP-C-12A, -12B, and -12C models operated at -40 to +60 °C (-40 to +140 °F)
Figure: Installation orientation restrictions for RP-C-12A, -12B, and -12C models operated at -40 to +60 °C (-40 to +140 °F)

Under normal operating conditions of 0 to 50 °C (32 to 122 °F), the RP-C-16A model can be installed in the following orientations:

  • Horizontally (on a DIN rail going from left to right), with the device label text in the upright position reading left to right. See “a” in the following figure.

  • Vertically (on a DIN rail going from top to bottom), which means that the device is rotated +90 degrees or -90 degrees from the horizontal position. See “b” and “c” in the following figure.

Installing the RP-C-16A model rotated 180 degrees from the horizontal position is not supported. See “e” in the following figure. Installing the RP-C-16A model face down from a ceiling (“d” in the figure) or face up on a horizontal surface (“f” in the figure) is only supported in the operating temperature range 0 to 40 °C (32 to 104 °F), but not in the temperature range 0 to 50 °C (32 to 122 °F). Installing the controller in an orientation that is not supported may cause the controller's thermal specifications to be exceeded, which can damage the controller.

 
action_zoom_plus_stroke Installation orientation restrictions for RP-C-16A model operated in normal conditions, 0 to 50 °C (32 to 122 °F)
Figure: Installation orientation restrictions for RP-C-16A model operated in normal conditions, 0 to 50 °C (32 to 122 °F)

When installing RP-Cs in a cabinet, it is recommended to provide ample space between the DIN rails and controllers for sufficient ventilation.

 
action_zoom_plus_stroke RP-Cs installed on horizontal DIN rails in a cabinet
Figure: RP-Cs installed on horizontal DIN rails in a cabinet

To help prevent the device from sliding down or sideways on the DIN rail, install an end clip for DIN 35 (part number SXWDINEND10001) tightly against the bottom or rightmost device on the rail. The end clip is easily removed if you bend the snap lock open with a screwdriver.

Notice

CONTROLLER DEVICE DAMAGE

Use an end clip (part number SXWDINEND10001) when you install the SmartX IP Controller device on a vertical DIN rail.

Failure to follow these instructions can result in equipment damage.

 
action_zoom_plus_stroke End clip for DIN 35 fixed across the DIN rail
Figure: End clip for DIN 35 fixed across the DIN rail

All RP-C models have fixed screw terminals.

The RP-C has four anchor points that can be used to fasten cable ties or other accessories for bundling wires.

 
action_zoom_plus_stroke Anchor points for cable ties
Figure: Anchor points for cable ties

All RP-C models can be equipped with optional covers to reduce access to the screw terminals and wires if desired.

 
action_zoom_plus_stroke Optional cover
Figure: Optional cover

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The wiring recommendations provide guidance regarding wiring of the I/O modules, SmartX servers, SmartX IP Controller devices, and RP Series expansion modules and multi-sensors.

I/O Wiring

The I/O wiring recommendations provide guidance on what type of wires should be used for the different I/O modules, SmartX AS-B server onboard I/O, and SmartX IP Controller device onboard I/O, how to perform grounding, and how to connect different external devices to the inputs and outputs. This section also provides information on the external connectors required for the RP Series expansion modules. Always use the recommended cables and wires.

For more information, see I/O Wiring .

Communication Port Wiring

The wiring recommendations for the communication ports on the SmartX servers, SmartX IP Controller devices, and RP Series expansion modules and multi-sensors apply to wires and cables used for RS-485 communications, LonWorks communications, USB connections, Ethernet connections, sensor bus connections, room bus connections, and RP-C Modbus network connections. Always use the recommended cables and wires.

For more information, see Communication Port Wiring .

Danger Danger

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

Disconnect the power supply and other high voltage equipment before wiring.

Failure to follow these instructions will result in death or serious injury.

To wire a screw terminal on RP-C

  1. Disconnect the power supply and other high voltage equipment connected to the controller.

  2. Loosen the screw of the terminal.

  3. Strip approximately 7 mm (0.3 inch) of the insulation from the end of each wire.

  4. Insert the end of the wire fully into its intended terminal. Ensure that no bare wire strands extend from the terminal.

  5. Tighten the screw using a small flat-blade screwdriver. Ensure that the screw is fully tightened. Use the following recommended screw tightening torque: 0.56 to 0.79 Nm (5 to 7 lbf.in).

  6. Use appropriate cable strain relief methods, especially for wires that carry 30 VAC or 42.4 VDC or above, to help prevent any load applied to the cable from being transferred to conductor terminations.

    You can use the anchor points on the controller enclosure and cable ties to fasten and fix the cables.

See Also

  • RP-C Device Installation
  • RP-C Screw Terminals
  • RP-C-12A Screw Terminals
  • RP-C-12B Screw Terminals
  • RP-C-12C Screw Terminals
  • RP-C-16A Screw Terminals
  • Wiring
  • Powering Up an RP-C-12A, -12B, or -12C Controller
  • Powering Up an RP-C-16A Controller