Opening an OPLC

Turn power off before opening the controller. If the controller has an installed Snap-in I/O module, remove it. Instructions are given in ‘Removing a Snap-in Module’ in the Vision User Guide. Open the OPLC by inserting a screwdriver into the slots located on the sides of the controller as shown, then carefully prying the cover off. In order to install a COM port module, such as an Ethernet or RS485 port, you will have to remove the plastic port cover by using a razor cutter to cut through the tabs. Close the controller by snapping the plastic cover back in its place. If the module is correctly placed, the cover will snap on easily. If required, reinstall the Snap-in Module.

 

 

	Turn power off before opening the controller. Locate the 4 slots on the sides of the controller. Using the blade of a flat-bladed screwdriver, gently pry off the back of the controller as shown.
To access jumpers, gently remove the top PCB board: Use one hand to hold the top-most PCB board by its top and bottom connectors as shown. With the other hand, grasp the controller, while keeping hold of the serial ports; this will keep the bottom board from being removed together with the top board. Steadily pull the top board off.
	Locate the jumpers shown in the figure to the left, then change the jumper settings as required.
Gently replace the PCB board as shown.  Make certain that the pins fit correctly into their matching receptacle. Do not force the board into place; doing so may damage the controller. Close the controller by snapping the plastic cover back in its place.  If the card is placed correctly, the cover will snap on easily.

This information is intended to aid trained and competent personnel in the installation of this equipment as defined by the European directives for machinery, low voltage, and EMC.  Only a technician or engineer trained in the local and national electrical standards should perform tasks associated with the device’s electrical wiring.

Before using a Unitronics' product, it is the responsibility of the user to read and understand this document and any accompanying documentation.

 

• Under no circumstances will Unitronics be liable or responsible for any consequential damage that may arise as a result of installation or use of equipment, and is not responsible for problems resulting from improper or irresponsible use of Unitronics devices.

• All examples and diagrams shown are intended to aid understanding.  They do not guarantee operation.

• Unitronics accepts no responsibility for actual use of a product based on these examples.

• Only qualified service personnel should open a device or carry out repairs.

• Please dispose of this product in accordance with local and national standards and regulations.

• Failure to comply with appropriate safety guidelines can result in severe personal injury or property damage. Always exercise proper caution when working with electrical equipment.

• Check the user program before running it.

• Do not attempt to use a device with parameters exceeding permissible levels.

• Install an external circuit breaker and take appropriate safety measures against short-circuiting in external wiring.

• To avoid damaging the system, do not connect or disconnect a device when the power is on.

• Do not touch live wires.

• Double-check all the wiring before turning on the power supply.