9.5.16 Signals
Table 636: OLATCC Input signals
Name Type Default Description
I_A SIGNAL 0 Phase A current
I_B SIGNAL 0 Phase B current
I_C SIGNAL 0 Phase C current
U_AB SIGNAL 0 Phase-to-phase voltage AB
TR1_TAP_POS INT32 0 Integer value representing tap changer position of
transformer 2
TR2_TAP_POS INT32 0 Integer value representing tap changer position of
transformer 3
TR3_TAP_POS INT32 0 Integer value representing tap changer position of
transformer 4
RAISE_LOCAL BOOLEAN 0=False Raise command input from configuration
LOWER_LOCAL BOOLEAN 0=False Lower command input from configuration
TAPCHG_FLLW BOOLEAN 0=False Change follower tap position (stop, lower, higher)
PARALLEL BOOLEAN 0=False Parallel or single operation
AUTO BOOLEAN 0=False Auto/Manual indication
CON_STATUS BOOLEAN 0=False Network connection status of the (own) transformer
LTC_BLOCK BOOLEAN 0=False External signal for blocking of automatic operation
TCO BOOLEAN 0=False Tap changer operating input
RSV BOOLEAN 0=False Reduce set voltage active
TR1_I_AMPL FLOAT32 0.00 Received current magnitude from transformer 1
TR1_I_ANGL FLOAT32 0.00 Received current angle from transformer 1
TR2_I_AMPL FLOAT32 0.00 Received current magnitude from transformer 2
TR2_I_ANGL FLOAT32 0.00 Received current angle from transformer 2
TR3_I_AMPL FLOAT32 0.00 Received current magnitude from transformer 3
TR3_I_ANGL FLOAT32 0.00 Received current angle from transformer 3
Table 637: OLATCC Output signals
Name
Type Description
RAISE_OWN BOOLEAN Raise command for own transformer
LOWER_OWN BOOLEAN Lower command for own transformer
FLLW1_CTL INT32 Lower/Raise command for follower transformer 1
in the Master/Follower operation mode
FLLW2_CTL INT32 Lower/Raise command for follower transformer 2
in the Master/Follower operation mode
FLLW3_CTL INT32 Lower/Raise command for follower transformer 3
in the Master/Follower operation mode
ALARM BOOLEAN Alarm status
PAR_FAIL BOOLEAN Parallel failure detected
Table continues on next page
Section 9 1YHT530004D05 D
Control functions
758 615 series
Technical Manual
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