4.2.10.6 Signals
IFPTOC Input signals
Table 637: IFPTOC Input signals
Name Type Default Description
I3P SIGNAL - Three-phase currents
IRES SIGNAL - Residual current
U3P SIGNAL - Three-phase voltages
URES SIGNAL - Residual voltage
EXT_RELEASE BOOLEAN 0=False External GFC start
signal, alternative for
internal GFC module.
BLOCK BOOLEAN 0=False Block signal for acti-
vating the blocking
mode
CB_CL_CMD BOOLEAN 0=False Defines breaker close
command. This signal
is used in the switch
on to fault (SOTF)
logic.
TRIGG_REC BOOLEAN 0=False External recorded da-
ta triggering. There
are two recorded data
banks available.
IFPTOC Output signals
Table 638: IFPTOC Output signals
Name Type Description
OPERATE BOOLEAN Operate
START BOOLEAN Start
ST_EF BOOLEAN Start signal according to
estimated fault current or
touch voltage according to
the standards
ST_XC BOOLEAN Start signal according to
cross-country stage earth-
fault module
ST_SOTF BOOLEAN Start signal according to
SOTF-module
ST_INTR_EF BOOLEAN Start signal according to in-
termittent earth-fault module
OP_EF BOOLEAN Operate signal according to
estimated fault current or
Table continues on the next page
Protection functions 1MRS759142 F
638 REX640
Technical Manual
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