SATEC PM180 Operation Manual - Manual (Page 71)

‎Chapter 7 Programming the PM180 Programming Relay Outputs
PM180 Substation Automation Unit 69
The available relay options are described in the following table:
Option Format/Range Default Description
Operation
Mode UNLATCHED
LATCHED
PULSE
KYZ
UNLATCHED Defines the behavior of the relay in
response to local and remote commands
Unlatched mode: the relay goes into its
active state when the control setpoint is
in active (operated) state, and returns
into its non-active state when the
setpoint is released.
Latched mode: the relay goes into its
active state when the control setpoint
goes into active state and remains in the
active state until it is returned into its
non-active state by another setpoint or
by a remote command.
Pulse mode: the relay goes into its active
state for the specified time, goes into
non-active state for the specified time
and remains in the non-active state.
KYZ mode: the relay generates transition
pulses. The relay changes its output
state upon each command and remains
in this state until the next command.
Polarity NORMAL (N.O.)
INVERTING (N.C.)
NORMAL Defines whether the relay is energized or
de-energized in its non-active and active
(operated) states.
With normal polarity, the relay is
normally de-energized in its non-active
state and is energized in its active
(operated) state.
With inverting polarity, the relay is
normally energized in its non-active state
and is de-energized in its active
(operated) state. It is called sometimes
failsafe relay operation.