Trips And Fault Finding; Trips; What Happens When A Trip Occurs; Resetting A Trip Condition - Parker 690 Plus Series Product Manual

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RIPS AND
Chapter 6

Trips

What Happens when a Trip Occurs

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Resetting a Trip Condition

Note: More than one trip can be active at any time. For example, it is possible for both the
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690+ Series AC Drive
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When a trip occurs, the drive's power stage is immediately disabled causing the motor and load
to coast to a stop. The trip is latched until action is taken to reset it. This ensures that trips due to
transient conditions are captured and the drive is disabled, even when the original cause of the
trip is no longer present
Drive Indications
If a trip condition is detected the unit displays and performs the following actions.
1. The HEALTH LED flashes indicating a Trip condition has occurred. (Investigate, find and
remove the cause of the trip.)
2. The programming block SEQ & REF::SEQUENCING LOGIC::TRIPPED signal is set to
TRUE.
The DIGITAL OUTPUT 1 (HEALTH) digital output changes between TRUE/FALSE,
depending on the output logic.
Keypad Indications (when connected)
If a trip condition is detected the MMI displays and performs the following actions.
1. The HEALTH LED on the keypad flashes indicating a Trip condition has occurred and a
trip message is displayed stating the cause of the trip.
2. The programming block SEQ & REF::SEQUENCING LOGIC::TRIPPED signal is set to
TRUE.
The DIGITAL OUTPUT 1 (HEALTH) digital output changes between TRUE/FALSE,
depending on the output logic.
3. The trip message(s) must be acknowledged by pressing the STOP key. The trip message
may be cleared by pressing the E key. Refer to Chapter 5: "The Keypad" - Alert Message
Displays.
All trips must be reset before the drive can be re-enabled. A trip can only be reset once the trip
condition is no longer active, i.e. a trip due to a heatsink over-temperature will not reset until the
temperature is below the trip level.
HEATSINK and the OVERVOLTAGE trips to be active. Alternatively it is possible for the
drive to trip due to an OVERCURRENT error and then for the HEATSINK trip to become
active after the drive has stopped (this may occur due to the thermal time constant of the
heatsink).
Reset the trip(s) using the remote trip reset input, or by pressing the STOP key on the keypad.
Success is indicated by the HEALTH LED (on the unit or MMI) ceasing to flash and returning
to a healthy "ON" state. The programming block SEQ & REF::SEQUENCING
LOGIC::TRIPPED output is reset to FALSE.
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AULT INDING

Trips and Fault Finding

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