STEP AS380-4T0011 User Manual

Instruction Manual for AS380 Series Elevator Integrated Drive Controller
263
Code
Fault
Description
Possible Cause Solution
Open phase for output Check the motor and output wiring for loose connections
77
Speed deviation
Acceleration time is too
short
Extend the acceleration time
Overloaded Reduce the load
Current limit is too low Increase the limit value in the allowable range
78
(In
accelerated runni
n
g)
Bus over-voltag
e
protection
Abnormal input
power voltage
Check the input power
The motor is quick restarted
again in high-speed rotation
Stop and restart the motor
(In decelerated
running) bus
over-voltage
protection
Excessive load inertia Use appropriate braking components
Deceleration time is too
short
Extend the deceleration time
The braking resistor has an
extremely large value or is
disconnected
Connect the appropriate braking resistor
(In constant
speed operation
) bus
over-voltage
protection
Exceptional input power Check the input power
Excessive load inertia Use appropriate braking components
The braking resistor has an
extremely large value or is
disconnected
Connect the appropriate braking resistor
79
Bus under
voltage
Supply voltage falls
below the
minimum operating voltage
Check the input power
Instantaneous power failure Check the input power. When the input voltage is
normal, restart after reset
Significant changes in input
power voltage
The power wiring terminal is
loose
Check the input wiring
Abnormal internal switching
power
Ask professional technical personnel for Ispection
Large starting
current load in the
same power system
Changes the power system to meet the specifications
80
Open phase for
output
Abnormal, or ignored
connection or disconnection
Follow the rules and check the converter output side
connections, eliminate missing and disconnection

STEP AS380-4T0011 Specifications

General

Brand	STEP
Model	AS380-4T0011
Category	Controller
Language	English