Instruction manual

86
ates because the frequency reference is set lower than the Min. Output
Frequency (n016) when the FWD (REV) RUN command is ON. If the
deceleration time is short or the load inertia is large, an overvoltage
(OV) fault may occur at deceleration. In this case, increase the decelera-
tion time or install an optional Braking Resistor.
Braking torque: Without braking resistor: Approx. 20% of motor
rating
With braking resistor: Approx. 150% of motor
rating
Coast to a Stop
Example when Acceleration/Deceleration Time 1 is selected
* Changing the frequency reference while running
Upon termination of the FWD (REV) RUN command, the motor
starts coasting.
 Applying DC Injection Braking
DC Injection Braking Current (n089)
Sets the DC injection braking current in units of 1%. (Inverter rated cur-
rent=100%)
DC Injection Braking Time at Stop (n090)
Sets the DC injection braking time at stopping in units of 0.1 s.
When the setting of n090 is 0, DC injection braking is not performed,
but the Inverter output is turned OFF when DC injection braking is
started.
Output
Frequency
Acceleration
Time 1
(n019)
Deceleration
Time 1
(n020)
Coast to a
stop
Time
FWD (REV)
RUN Command