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How to

How to


Products: MP-C, MP-V
Functionalities: Hardware
Product version: 2.0, 2.1, 3.0, 3.1, 3.2, 3.3, 2022
7/13/2019

Removing a Terminal Block from MP-C

You remove a terminal block from MP-C in order to replace the controller.

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The MP-C can be installed on a DIN rail or other flat surface inside a cabinet. The device is recommended to be installed in a cabinet, unless local regulations allow an exception.

A DIN rail is a common and convenient technique for installing the MP-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 MP-C rail and adjacent rails or other devices.

The MP-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 MP-C installed on a horizontal DIN rail

MP-C installed on a horizontal DIN rail

The restrictions on installing the device in other orientations differ depending on the operating conditions.

Notice

CONTROLLER DEVICE DAMAGE

Follow the installation orientation restrictions that apply to the specific BACnet/IP device.

Failure to follow these instructions can result in equipment damage.

Under normal operating conditions of 0 to 50 °C (32 to 122 °F), the MP-C 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 MP-C rotated 180 degrees from the horizontal position with device label text up and down (“e” in the figure), face down from a ceiling (“d” in the figure), or face up on a horizontal surface (“f” in the figure) is not supported.

 
action_zoom_plus_stroke Installation orientation restrictions for the MP-C operated in normal conditions, 0 to 50 °C (32 to 122 °F)

Installation orientation restrictions for the MP-C operated in normal conditions, 0 to 50 °C (32 to 122 °F)

When the MP-C is 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 the MP-C operated at -40 to +60 °C (-40 to +140 °F)

Installation orientation restrictions for the MP-C operated at -40 to +60 °C (-40 to +140 °F)

All MP-C controller models are recommended to be installed in a cabinet, unless local regulations allow an exception.

Important:

The device should be installed within an enclosure such as a control cabinet for isolation to exposed live parts.

The MP-C can be installed in a standard DIN enclosure/cabinet.

 
action_zoom_plus_stroke MP-Cs installed on horizontal DIN rails in a cabinet

MP-Cs installed on horizontal DIN rails in a cabinet

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

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 BACnet/IP Controller device on a vertical DIN rail.

Failure to follow these instructions can result in equipment damage.

 
action_zoom_plus_stroke End clamp for DIN 35 fixed across the DIN rail

End clamp for DIN 35 fixed across the DIN rail

The MP-C is delivered with terminal blocks installed on the device. Spare terminal blocks can be ordered separately using the part number SXWMPCCON10001.

The terminal blocks are removable. You can replace an MP-C in seconds because no terminal wiring is affected. The only exception is the high power relay outputs on the MP-C-15A and MP-C-18A models, which use a two-position fixed terminal block due to current requirements.

All MP-C models can be equipped with MP-C Display (part number SXWMPCDSP10001), which is an add-on module that enables manual override control of analog and digital outputs. The module consists of an LCD display and keys. The module is designed for permanent installation.

 
action_zoom_plus_stroke MP-C Display installed on MP-C

MP-C Display installed on MP-C

Do not try to remove the MP-C Display module as it may damage the enclosure and the module. Once installed, the MP-C Display module cannot be removed.

Notice

CONTROLLER DEVICE DAMAGE

Do not try to remove the MP-C Display module.

Failure to follow these instructions can result in equipment damage.

Danger Danger

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

De-energize the high-voltage equipment connected to the relay outputs before removing the terminal block. More than one disconnect switch may be required to de-energize the equipment before servicing.

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

Caution Caution

RISK OF ELECTRIC SHOCK

Disconnect the 24 VAC/DC power supply and other electrically powered equipment before removing the terminal block.

Failure to follow these instructions can result in injury or equipment damage.

To remove a terminal block from MP-C
  1. De-energize the high-voltage equipment connected to the relay outputs of the controller.

    This applies to all MP-C controllers except the MP-C-18B model, which does not have relay outputs.

  2. Disconnect the 24 VAC/DC power supply and other electrically powered equipment that is connected to the controller.

  3. Insert a small screwdriver in the slot between the terminal block and the connector header.

     
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  4. Gently pry the terminal block at an angle away from the connector header.

     
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  5. Remove the terminal block from the connector header.

     
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  • MP-C Device Installation
  • Installing MP-C on a DIN Rail
  • Installing MP-C on a Flat Surface
  • Installing a Terminal Block on MP-C