Means of connecting Discrete I/O modules: connecting screw terminal block modules

Means of connecting Discrete I/O modules: connecting screw terminal block modules

At a Glance Discrete I/O module terminal blocks feature an automatic code transfer device activated on first use. This allows fitting errors to be avoided when replacing a module. This coding guarantees electrical compatibility by module type.

Description of the screw terminal block Every terminal block can receive bare wires or wires with terminations or spade terminals. The capacity of each terminal is:  minimum: 1 x 0.2 mm2 wire (AWG 24) without termination;  maximum: 1 x 2 mm2 wire without termination or 1 x 1.5 mm2 with termination.

Illustration of the termination and the spade terminal.

(1) 5.5 mm maximum.

The maximum capacity of the terminal block is 16 x 1 mm2 wires (AWG) + 4 x 1.5 mm2 wires (AWG). Screw clamps come with slots for the following types of screwdriver:  Pozidriv No. 1;  5 mm diameter flat head.

Screw connection terminal blocks feature captive screws. On the supplied blocks, these screws are not tightened. NOTE: The maximum torque setting for tightening connection terminal block screws is 0.8 N.m NOTE: Screw terminal blocks must be engaged or disengaged with sensor and pre-actuator voltage switched off.

The diagram below shows the method for opening the screw terminal block door.