ABB REG316 4 Series - Checking the Duty of the Tripping and Signalling Contacts; Checking the Opto-Coupler Inputs

REG 316*4 1MRB520049-Uen / Rev. C ABB Switzerland Ltd
7-11
7.2.6. Checking the duty of the tripping and signalling contacts
Check that the loads connected to all the contacts are within the
specified ratings given in the “Contact ratings” section of the data
sheet.
7.2.7. Checking the opto-coupler inputs
Check the polarity and supply voltage of all opto-coupler inputs
in relation to the ordering code (also given on the rating plate at
the rear of the equipment).