198
HX7+ ASD Installation and Operation Manual
*OLI
ASD Overload
Load requirement in excess of
the capability of the ASD.
• The carrier frequency is too high.
• An excessive load.
• Acceleration time is too short.
• DC damping rate is set too high.
• The motor is starting into a spinning load after a
momentary power failure.
• The ASD is improperly matched to the application.
OLM
Motor Overload
Load requirement in excess of
the capability of the motor.
• V/f parameter improperly set.
• Motor is locked.
• Continuous operation at low speed.
• The load is in excess of what the motor can deliver.
*OLR
Resistor
Overload
Excessive current at the
Dynamic Braking Resistor
.
• Deceleration time is too short.
• DBR configuration improperly set.
*OP
Overvoltage
DC bus voltage exceeds
specifications.
• ASD attempting to start into a spinning motor after a
momentary power loss.
• Incoming commercial power is above the specified
range.
• Decel time is too short.
• Voltage spikes at the 3-phase input; install inductive
filter.
• DBR required.
• DBR resistance value is too high.
• DBR function is turned off.
• Overvoltage Stall feature is turned off.
• System is regenerating.
• Load instability.
• Disable the Ridethrough function (
).
OT
Overtorque
Torque requirement in excess of
the setting of
for a
time longer than the setting of
.
• ASD is not correctly matched to the application.
•
setting is too low.
• Obstructed load.
*POFF
Control
Undervoltage
Undervoltage condition at the 5,
15, or the 24 VDC supply.
• Defective Control board.
• Excessive load on power supply.
• Low input voltage.
PtSt
Reference Point
Two speed-reference frequency
setpoint values are too close to
each other.
• Two speed reference frequency setpoints are too close to
each other (increase the difference).
UC
Undercurrent
Output current of the ASD is
below the level defined at
and remains there for the time
set at
*
Reset ignored if active.
Keypad
Display
Function
Description
Possible Causes
Содержание HX7+ ASD
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