12
N Power On
When power is supplied to the ACS140, the green LED comes on.
Note! Only three power-ups in five minutes are allowed.
Note! Before increasing motor speed, check that the motor is running in the
desired direction.
O Protection Features
The ACS140 has a number of protective features:
The ACS140 has the following LED alarm and fault indicators, for location of
LED alarm indicators, see section G.
If the ACS100-PAN control panel is connected, see "Diagnostics" on
page 81.
Note! Whenever the ACS140 detects a fault condition, the fault relay
activates. The motor stops and the ACS140 will wait to be reset. If the fault
still persists and no external cause has been identified, contact your ACS140
supplier.
• Overcurrent
•Overvoltage
• Undervoltage
• Overtemperature
• Output earth fault
• Output short circuit
• Input phase loss (3~)
• Power loss ride through (500 ms)
• I/O terminal short circuit protection
• Long-term overcurrent limit trip 110 %
• Short-term current limit 150 %
• Motor overload protection (see P)
• Stall protection
Red LED: off
Green LED: blinking
ABNORMAL CONDITION
ABNORMAL CONDITION:
• ACS140 cannot fully follow control
commands.
• Blinking lasts 15 seconds.
POSSIBLE CAUSES:
• Acceleration or deceleration ramp is
too fast in relation to load torque
requirement.
• A short voltage interruption.
Red LED: on
Green LED: on
FAULT
ACTION:
• Give a stop signal to reset fault.
• Give a start signal to restart the drive.
NOTE:
If the drive fails to start, check that the
input voltage is within the tolerance
range.
POSSIBLE CAUSES:
• Transient overcurrent
• Over-/undervoltage
• Over temperature
CHECK:
• the supply line for phase loss or
disturbances.
• the drive for mechanical problems that
might cause overcurrent.
• that heat sink is clean.
Red LED: blinking
Green LED: on
FAULT
ACTION:
• Turn the power off.
• Wait for the LEDs to turn off.
• Turn the power back on.
Caution! This action may start the drive.
POSSIBLE CAUSE:
• Output earth fault
• Short circuit
CHECK:
• the isolations in the motor circuit.
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