Run Frequency Control - Toshiba TOSVERT VF-A5 Instruction Manual

,- ,- ,-
,_,,-. =··-
11= ,-
,_,,-,I
Related parameters
(Special Control Parameters)
-, -
, __
,,_,,_
I I
t _t _t
Run frequency control
IF,- ,_,,-,I
Run frequency
IF
1-1 '::15
I
Run frequency hysteresis
E6580516
The inverter run/stop can be controlled with just the reference frequency signal. By setting the run frequency
IF ,- ,_, ,-, I
and the run frequency hysteresis
IF
1-1
'::15 I .
the inverter will start running when the reference
frequency signal is higher than point B in the following diagram, and will stop when less than point A.
*
For example, when using the inverter for HVAC applications, etc., and automatically operating from a
room temperature signal, the inverter can be stopped when the reference frequency signal drops below
30Hz.
Output frequency
[Hz]
j,c,-u,-.1
Fl-!'=15
F
-En
F-51:
0
-------;J--------
,',
:
---r:·-----------i----------------
,
. .
,'
:
A B
100%
Reference frequency signal
*
During acceleration, the inverter will start with start-up frequency
IF -
51::
I
in
G ,- . 5 [
when the
reference frequency signals is higher than point B. During deceleration, the inverter will stop at end
frequency
IF - E ,-,
I
in
G ,- . 5 [
when the reference frequency signal drops below point A.
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