Hitachi WJ C1 Series User Manual

Chapter 9 Inverter Functions
9-7-8
9.7.5 Starting after Trip Reset or Power-on
 How to restart the inverter to match the rotation speed of the motor when idling after a trip
reset, or when the power is turned on?
 As the brake is applied after a trip reset, or when the power is turned on, how to start the
inverter from 0 Hz?
 Use "Restart mode after RS release [C103]" to choose either 0 Hz restart, frequency matching
restart
*1
, or active frequency matching restart
*2
as the starting method after a trip reset, or when
the power is turned on.
 In case of a 0 Hz restart, there is no retry wait time setting.
 The starting method used when turning the power on, and when restarting after a trip reset
release, share the same settings.
 When performing the active frequency matching restart, the RUN command direction when
starting the active frequency matching operation is the same as the RUN command direction at
the time of reset input.
Code
Item
Description
Data
[b003]
Retry wait time after
instantaneous power
failure/undervoltage error
Sets the wait time from when the power returns
until the restart.
0.3 to 100.0 (s)
[C103]
Restart mode after RS
release
Performs a 0Hz restart.
00
Performs the frequency matching restart
(= Active frequency matching restart at the
frequency of the previous output interruption).
01
*1
Performs the active frequency matching restart.
02
*2
*1. For details, refer to "9.7.3 Starting with Frequency Matching".
*2. For details, refer to "9.7.4 Starting with Active Frequency Matching".
◼ (Example 1) Example of operation during stop,
and after turning on the power/reset
(C103=00)
◼
(Example 3) Example of operation when the [RS]
terminal is turned off during
operation (C103=00)
◼
(Example 4) Example of operation when the [RS]
terminal is turned off during
operation (C103=01 or 02)
Reset [RS]
RUN
command
Free running
Motor speed
If [C103]=00, 0Hz restart
ON
ON
Free running
[C103]=01: Frequency matching restart
[C103]=02: Active frequency matching restart
[b003]
Motor speed
RUN
command
Reset [RS]
ON
ON
ON
◼ (Example 2) Example of operation during stop,
and after turning on the power/reset
(C103=01 or 02)
Free
* Turn the power on or reset, and then turn the
RUN command on to turn on the inverter to
operate according to the [C103] setting.
[b003]
Motor speed
RUN
command
Powering on
or
reset [RS]
ON
ON
ON
Powering on
or
reset [RS]
RUN
command
Motor speed
If [C103]=00, 0Hz restart
ON
ON
A
!
Q

Hitachi WJ C1 Series Specifications

General

Brand	Hitachi
Model	WJ C1 Series
Category	Inverter
Language	English