3
The motor characteristics at start and during acceleration are limited by the drive overcurrent. If
higher starting torque is needed, use a higher rating drive or increase capacity of both motor and
drive.
1.3.1.3 Emergency Stop
When a drive fault occurs, protection function will be automatically triggered to shut off the output
but the motor may not stop immediately. Therefore please install mechanical brake if immediate
stop is necessary.
1.3.2 Settings
1.3.2.1 Upper Limits
The maximum output frequency of the drive is 400Hz. If the upper limit is set incorrectly, the motor
will run at higher than its rated speed and cause danger. Please set the limit of output frequency in
Frequency Upper Limit parameter. The default setting of the rated output frequency is 60Hz.
1.3.2.2 DC Braking
Excessive DC braking current and duration could cause motor overheat.
1.3.2.3 Acceleration /Deceleration Time (Acc./Dec. Time)
Acceleration and deceleration time is determined by the motor torque, load torque and load
inertia. Set a longer Acc./Dec. time after Stall Prevention function is triggered. In addition, the
acceleration and deceleration time will be extended depending on the Stall Prevention duration. If
faster acceleration and deceleration are required, install proper braking options or use a higher
rating motor and AC drive.
1.3.3 General Handling
1.3.3.1 Wiring
Connecting power supply to output terminals U/T1, V/T2 and W/T3 will damage the drive. Check all
the connections and wiring sequence before turning on the power. Failure to comply could cause
drive damage.
1.3.3.2 Maintenance
Capacitors in the drive may still be charged for a short time after shutting off the power. Wait for
the amount of time specified on the drive before any maintenance. Failure to comply could cause
electrical shocks to personnel. Besides, do not touch the heatsink which can be very hot during
operation. Replace the cooling fan only when the heatsink has cooled down after shutting off the
power. In addition, when a synchronous motor is coasting to stop, it regenerates voltage to keep
the drive terminals live even when the drive power is off. Wait until the motor is fully stopped
before drive maintenance. Failure to comply could cause electrical shocks to personnel.
1.3.3.3 Wiring Tools
Use only the tools suggested by the terminal supplier during drive maintenance.
1.3.3.4 Transportation and installation
Do not explore the drive to the environment containing the halogens or DOP gas during
transportation or installation.
1.4 Warranty
1.4.1 Warranty Period
Contact local distributor for details.
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