Frequency Limiter - Hitachi L300P-110L Instruction Manual

Frequency limiter

This function can set a maximum and minimum limit of the output
frequency.
Even if a frequency command exceeds the maximum and minimum
limiter the inverter will ignore this value and stop at the values set.
Set first maximum limiter on setting.
Be sure that the maximum limiter (A061/A261) > minimum limiter (A062/A262).
The maximum and minimum limiter will not operate if 0Hz is set.
Set item
Frequency max.
limiter
Frequency min. limiter
(1) In use O-L, OI-L case
Output frequency (Hz)
Maximum frequency
A004/A204
A061
A062
(2) In use O2-L case
Reverse
When using the minimum frequency limiter and 0v is inputted into O2 terminal, A062 applies to both forward
and reverse directions.
(a) When operation command is control terminal (Terminal)(A002:01)
Terminal
FW(ON)
RV(ON)
(b) When operation command is operator (A002:02)
F004
00
01
Function code
0.00,
A061/A261 frequency min. limiter - max.
frequency
0.00,
A062/A262 starting frequency - max.
limiter frequency
10V
0V
20mA
4mA
Maximum
frequency
A004/A204
A061
A062
-10V
A062
A061
Maximum
frequency
Revolution when O2 is 0V
A062 on forward side
A062 on reverse side
Revolution when O2 is 0V
A062 on forward side
A062 on reverse side
Chapter 4 Explanation of function
A061/A261: 1st/2
A062/A262: 1st/2
Setting limit
When frequency command is control terminal
(Terminal), by setting Min. limiter, even if 0V is
input, it is not possible to output less than the
frequency set with Min. limiter.
Frequency command
Forward
10V
4-28
Relation code
nd
frequency maximum
limiter
nd
frequency minimum
limiter
Contents
Unit : Hz
Setting max. of output
frequency
Unit : Hz
Setting min. of output
frequency