current value to be displayed on the display meter.
When the setting of Imax is completed, turn on selector switch S2-2.
The rated current of the device must be bigger than the actual motor load current.
※
Imax (VR6) is set to the rated current of device (I dn) at production.
[Caution] When turning selector switch S2-2 on or off, turn off the device beforehand.
6.5.5 Limit of Load Rate Current (I limit) and Setting Delay Time (I time)
The trimmer I limit (VR9) for setting limit current of motor is determined in reliance on
the rated current of the motor. When trimmer is fully turned in clockwise, it is set to the
value of 120% of the rated current of the device.
Trimmer I time (VR8) for setting the delay time for motor limit current can be set within
the range of 0 ~ 60 seconds. (When it is fully turned in clockwise, the delay time is set
to 60 seconds.)
When more current than I limit (VR9) setting value flows for more than the time set on
I time (VR8), the relay (RY3) starts to operate.
- When readjusting the limit value of load rated current (I limit - VR9), choose selector
switch No. 9 (SW1) while ENB terminal (TB1 No. 24) and RUN terminal (TB1 No. 23)
are open and adjust trimmer I limit (VR9) to make the limit of load rated current to be
displayed on the display meter.
※
I limit is set to the rated current of the device (I dn) and I time is set to 10 seconds.
6.5.6 Setting Acceleration and Deceleration Gradient
When not choosing acceleration and deceleration gradient, set selector switch S1-2 to
DR, and When using acceleration and deceleration gradient, set selector switch S1-2 to
AD to adjust the acceleration and deceleration gradient from 0.6 [SEC] to 60 [SEC].
(Accel (VR2): Acceleration Gradient, Decel (VR3): Deceleration Gradient)
To increase the acceleration and deceleration time, turn each switch clockwise.
6.5.7 Setting Speed Loop Gain (Ngain)
When the motor rotational speed is unstable, adjust the settings as follows.
First, set selector switch S1-2 to DR. Fix the external speed command value to 5 [V]
under device operation mode and observe the speed feedback value of test point TP7
while turning the command value on and off.
Set trimmer Ngain (VR5) to a value that enables the motor to reach the preset value at the
shortest time without delay. When the adjustment is completed, restore selector switch
S1-2 to AD position.
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