Improvement Of The Reaction Time Of Overload Output Signal - Hitachi WJ200-001S Instruction Manual

Ver.3.1− − − − 2

Improvement of the reaction time of overload output signal

Processing cycle of overload advance notice signal (OL, OL2) is selectable from 40ms / 2ms by C901. Please
・
select appropriate processing cycle for your application.
C902 and C903 are available only when C901 = 01.
・
Overload signal is turned off when output current is lower than
・
"overload warning level (C041 / C241, C111), and its hysteresis can be specified by overload advance notice
signal hysteresis (C903)".
(If C903 is bigger than overload warning level, overload advance notice signal is turned off when motor
stops.)
If overload advance notice signal repeats switching on/off in short time due to the instability of output
・
current, please adjust C902 and C903. Because a response changes depends on C902 and C903 value, please
be careful.
NOTE:. Parameters marked with " " in A column can set even in inverter running and marked with " " NOTE
NOTE NOTE
cannot set in inverter running. Parameters marked with " " in B column can set even in inverter
running and marked with " " cannot set in inverter running when in the high level access mode, which
means that b031 is set to "10".
Func. Func.
Func. Func.
Code Code Code Code
C901 C901 C901 C901 Processing cycle of overload
advance notice signal select
C902 C902 C902 C902 Filter time constant for
overload advance notice
signal
C903 C903 C903 C903 Overload advance notice
signal hysteresis
Timing chart of overload advance notice signal (2msec)
Output current
Overload warning level
(C041/ C241, C111)
Overload advance notice signal
Name Name Name Name
00...40 msec. 00 00 00
0 0 0 0 1 1 1 1 ...2 msec.
It effects detection of output
current that is used for judgement
of overload advance notice signal,
range is 0 to 9999 msec.
The ratio for the rated current of
each INV mode. It effects turning
off of overload advance notice
signal,
range is 0.00 to 50.00 %
ON
Table Ver.3.1-1
Description Description Description Description A A A A B B B B
ON
Fig. Ver.3.1-1
Modbus s s s register Modbu register
Modbu Modbu register register
Initial data Initial data Initial data Initial data
number number number number
00 14f0h
0 14f1h
10.00 14f2h
Hysteresis (C903)
Resolution Resolution Resolution Resolution
-
1 [ms]
0.01 [%]