Instruction manual

 Selecting Stopping Method

Selects the stopping method suitable for application.

• Deceleration to stop

Example when accel/decel time 1 is selected

Upon termination of the FWD (REV) run command, the motor decelerates

at the decel rate determined by the time set to deceleration time 1 (n020) and

DC injection braking is applied immediately before stop. DC injection

braking is also applied when the motor decelerates by setting frequency

reference lower than min. output frequency (n016) with FWD (REV) run

command ON. If the decel time is short or the load inertia is large,

overvoltage (OV) fault may occur at deceleration. In this case, increase the

decel time or install a optional braking resistor.

Braking torque :

Without braking resistor : Approx. 20% torque of motor rating

With braking resistor: Approx. 150% torque of motor

rating

Selecting stopping method (n005)

SettingSetting

Description

Deceleration to stop

Coast to stop

OUTPUT

FREQUENCY

ACCEL

TIME 1

(n019)

DECEL

TIME 1

(n020)

DECEL TIME 1

(n020)

MIN. OUTPUT

FREQUENCY

(FREQUENCY AT

DC INJECTION BRAKING

START)

n16

(FACTORY SETTING: 1.5Hz)

DC INJECTION BRAKING

TIME AT STOP (n090)

(FACTORY SETTING: 0.5s)

TIME

FWD (REV)

RUN

COMMAND

* When frequency reference is changed during running.