Omron SYSDRIVE 3G3JV

5-21
when the frequency is other than zero, the frequency calculated at that point will be output. Be-
cause of this, if the baseblock is cleared during deceleration while the motor is free running, a
large discrepancy between the motor speed at that moment and the Inverter output frequency
may result in a main circuit overvoltage (OV) or overcurrent (OC).
H Speed Search (Set Value: 14, 15)
The speed search function is provided for smooth restarting without stopping a free running motor. Use
it when switching the motor from commercial power supply operation to Inverter operation, when start-
ing with the Inverter a motor turned by external force, etc.
The speed search function searches for the present motor frequency, from high frequency to low. When
the motor’s rotation speed is detected, it is accelerated from that frequency to the frequency reference
according to the acceleration/deceleration time setting.
Forward (reverse)
RUN command
Speed Search command
0.5 s min.
High-speed frequency
or set frequency
(frequency reference)
Minimum base block time (0.5 s)
Speed search operation
ON
ON
Output frequency
Time
Time
Time
Speed Search Function
5-9-2 Multi-function Output
The 3G3JV incorporates two multi-function output terminals (MA and MB).
Output from these terminals has a variety of functions according to the application.
H Selecting the Multi-function Output (n40)
n40
Multi-function Output (MA/MB and MC) Changes during
operation
No
Setting
range
0 to 7, 10 to 17
(see note)
Unit of
setting
1 Default setting 1
Note Do not set values outside the above setting ranges.
Basic Operation
Chapter 5