ABB REG316 4 Series Operating Instructions Manual page 323

REG 316*4 1MRB520049-Uen / Rev. F
Retrip t1
signals a repeat trip after t1. This signal is generated when
the BFP timer t1 in one of the phases has timed out.
Uncon Trip t1
signals an unconditional trip after t1. This signal is generated
when the UT timer t1 has timed out.
Ext Trip t1
signals an external trip. This signal is generated when either
the input "Ext Trip t2" or "Ext Trip EFP" is enabled.
Backup Trip t2
signals a backup trip after t2. This signal is generated when
the BFP timer t2 has timed out.
Uncon Trip t2
signals an unconditional trip after t2. This signal is generated
when the UT timer t2 has timed out.
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