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CHAPTER 4: SETPOINTS
Output Relay 3 (F7)
Start Inhibit
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
OPERATE
Range: Off, Any FlexLogic operand
Default: Off
This setpoint provides a selection of any operand from the list of FlexLogic or
communications, which can be used to energize the auxiliary output relay.
TYPE
Range: Self-Reset, Latched, Pulsed
Default: Pulsed
If Self-Reset is selected, the output relay is energized as long as the element is in
operating mode, and resets when the element drops out. If Latched is selected, the
output relay stays energized upon element dropout. The latched auxiliary outputs can
be reset by issuing a reset command. For Pulse selection, see SEAL-IN TIME (displayed
only if Type=Pulsed) on page 5-3.
OPERATION
Range: Non-Failsafe, Failsafe
Default: Non-Failsafe
Failsafe operation causes the output relay to be energized when the operand assigned
to the OPERATE AUX RLY # setting is low and de-energized when the same operand is
high. A failsafe relay also changes state (if not already activated by an operand driving
this output relay) when control power is removed from the 869. Conversely, a non-
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
This relay can be used as an auxiliary relay. However, it is recommended to use this relay to
inhibit or prevent the start of the motor, as illustrated in the figure Typical Wiring Diagram
in Chapter 2.
Path:
Setpoints > Outputs > Output Relays > Start Inhibit
NAME
Range: Up to 13 alphanumeric characters
Default: Start Inhibit
This setpoint is used to name the auxiliary output relay by selecting up to 13
alphanumeric characters. The relay is named Start Inhibit as the factory default.
OPERATE
Range: Off, Any FlexLogic operand
Default: Start Inhibit
This setpoint provides for the selection of any operand from the list of FlexLogic or
communications operands, which can be used to energize auxiliary Output Relay 3. The
Start Inhibit operand is programmed as factory default to energize this relay.
Descriptions for all the other setpoints under Start Inhibit are identical to those of the
Auxiliary Relay Outputs.
OUTPUTS
4–99
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