ABB PU518 3BSE018680R1 Channel isolation card

The following procedures are recommended when connecting field wiring to the detachable terminal board on this input module. 1. Turn off power before removing or installing terminal boards. 2. Open the hinged door on the module. The terminal board can be removed by turning the jackscrew counter-clockwise until it is disengaged.3. To remove the terminal board, grasp the top of the terminal board and swing it outward.

The terminal board accepts wire sizes from AWG #22 (0.36 mm2 ) through AWG #14 (2.10 mm2 ). When using AWG #14 (2.10 mm2 ) wire for wiring all points, do not exceed a maximum insulation diameter of 0.135 inch (3.43mm). To ensure proper connection, two wires may be terminated on one terminal only if both wires are the same size.

The terminal board accepts a maximum

 of 40 AWG #14 (2.10 mm2 )wires. If AWG #14 (2.10 mm2 ) wires are used, place wire at least 8 inches (203mm) from termination end to provide space for the hinged door to close. After completing connections to all modules in a rack, the wire bundle must be secured. To ensure that the wire bundle is secured properly, it is recommended that a cable tie be wrapped around the wire bundle and tightly secured through the cable tie cleat at the bottom of the terminal board. For extremely large wire bundles, additional cable ties should be used.

The module’s door label shows circuit wiring information

provides space to record circuit wiring identification. A slot is provided on the hinged door to allow for insertion of this label. If the label is difficult to insert, crease the scored edge before insertion. 7. Field wiring connections are shown below. Since each group of eight inputs is isolated from the others, a wire from the power source to the power input terminal for each group (terminal number 10, 20, 30, or 40) is required (power input terminals for each group are not connected to each other inside the module).

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