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The module has 4 miniature fuses providing the line protection. Each fuse
is associated to a LED. The fuses are monitored via an evaluation logic
and the state of each circuit is announced to the related LED.
The contact pins 1, 2, 3, 4 and L- on the front side serve to connect L+ resp. EL+ and L- to supply the IO modules and sensor contacts.
The contacts d6, d10, d14, d18 serve as rear terminals for 24 V supply of
one IO slot each.If all fuses are in order, the relay contact d22/z24 is closed. If a fuse is not equipped or faulty, the relay will be deenergized. Via
the LEDs faults are announced as follows
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