CHAPTER 4: SETPOINTS OUTPUTS
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–105
failsafe relay is de-energized in its normal non-activated state and will not change state
when control power is removed from the 869 (if not already activated by a protection
element).
The choice of failsafe or non-failsafe operation is usually determined by the motor’s
application. In situations where the process is more critical than the motor, non-failsafe
operation is typically programmed. In situations where the motor is more critical than
the process, failsafe operation is programmed.
EVENTS
Range: Disabled, Enabled
Default: Enabled
Figure 4-31: Auxiliary Relays generic logic
892828A3.cdr
AND
SETPOINT
TYPE
Latched
Self-Reset
AND AND
OR
AND
OR
RESET (Command)
Operate Aux Output Relay
Pulsed
AND
SETPOINT
OPERATE
Off = 0 SEAL-IN TIME
SETPOINT
t
This setpoint is displayed only
upon “Pulsed” output type selection
OR
Operation (from Protection,
Control, or Monitoring Elements)
Relay ( Ready = 1)
Relay ( Ready = 1)
OR
BLOCK
SETTING
Off = 0
Relay ( Ready = 1)
Aux Relay X ON
FLEXLOGIC OPERAND
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