1MRK 505 353-UEN Section 2
Overview
Application Manual 13
Bay protection functions REB500
Table 14 BU_ DIST input signals
BP int. Signal Designation of binary input sig. Description
111205_DIST Ext. Block Dist.
the distance protection func-
111215_DIST Ext. Blk. PSB
111220_DIST Ext. Block O/C
the backup overcurrent function
111225_DIST Ext. Block SOTF
the tripping condition for the
111230_DIST Ext. Block HF
Input for blocking a received PLC signal (con-
trolled, for example, by a sensitive E/F scheme
using the same PLC channel
111235_DIST Ext. Block Z1
for blocking measurement in the first zone
Circuit breaker manual close command
111510_DIST Isolator Open
Isolator open signal for activating the ‘short
logic and protection (T section in 1½ breaker
schemes)
Dir.
Input for changing the direction of measurement
energized signal (auxiliary contact on the
circuit-breaker when the VTs are on the busbar)
External zone extension control signal
Zone extension
Input for PLC signal from the remote station
Input for PLC failure signal
Table 15 BU_ OCDT input signals
BP int. Signal Designation of binary input sig. Description
Table 16 BU_ OCINV input signals
BP int. Signal Designation of binary input sig. Description
Table 17 BU_ DIROCDT input signals
BP int. Signal Designation of binary input sig. Description
Input for Blocking of DIROCDT
Table 18 BU_ DIROCINV input signals
BP int. Signal Designation of binary input sig. Description
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