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SINUS/ISD
15P0082B8
USER MANUAL
7 - 1/4
7.0
7.0
T
T
RIPS AND
RIPS AND
F
F
AULT
AULT
F
F
INDING
INDING
7.1
7.1
TRIPS
TRIPS
7.1.1
WHAT HAPPENS WHEN A TRIP OCCURS
When a trip occurs, the Inverter’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 Inverter is made safe, even when the original cause of the trip is no longer present
7.1.1.1
Inverter Indications
If a trip condition is detected the unit displays and performs the following actions.
The HEALTH LED flashes indicating a Trip condition has occurred. (Investigate, find and remove the cause of
the trip.)
The programming block SEQUENCING LOGIC:TRIPPED signal is set to TRUE.
The DIGITAL OUTPUT 1 (HEALTH) digital output changes between TRUE/FALSE, depending on
the output logic.
7.1.1.2
Operator Station Indications (when connected)
If a trip condition is detected the MMI displays and performs the following actions.
1.
The HEALTH LED on the Operator Station flashes indicating a Trip condition has occurred and a trip
message is displayed stating the cause of the trip.
2.
The programming block 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 E
E key. Refer to Chapter 5: “The Operator
Station” - Message Displays.
7.1.2
RESETTING A TRIP CONDITION
All trips must be reset before the Inverter 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 A trip can only be reset once the trip condition is no
longer active, i.e. a trip due to a heatsink over-temperature will not reset until the temperature is below the trip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.
Note:
More than one trip can be active at any time. For example, it is possible for both the HEATSINK TEMP
and the LINK OVERVOLTS trips to be active. Alternatively it is possible for the Inverter to trip due to an
OVERCURRENT error and then for the HEATSINK TEMP trip to become active after the Inverter 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/RESET
STOP/RESET key on the
Operator Station.
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 SEQUENCING LOGIC::TRIPPED output is reset to FALSE.
DEFAULT
DEFAULT
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