Mitsubishi Electric Freqrol-A100 Instruction Manual page 120

Pr. 109
-
Pr. 133
I P r . 1
Restart waiting timg (MC3 ON time)
When automatic restart after instantaneous power failure has
,
.
been selected, coasting speed must be detected after MC3 is
turned on. (Also set parameters Pr. 57 and 58.)
I P r . 1 1 0 )
Cbmmercial power supply switching selection at
alarm occurrence
-
- 1
Automatic inverter operation-commercial power
supply operation switching frequency
Set Value Operation
I
.
-
T&
set dutomadc pr&ess control
: :
0
Pr. 128 "forward-reverse action selection", Pr. 129 "PI
proportional band" Pr. 130 "integral time", Pr. 131
I )
5 .
"upper limit"
+
.
-
Pr. 132'"lower limit", Pr. 133 "PI control set value for PU
operation"
. .
Automatic process control can be exercised for flow rate, air
volume, pressure or the like by the inverter.
PI control action is a combination of proportional (P) control
.
.
action and'integral (I) control
manipulated value accor
Set Value
.
1 -
action designed to provlde a
.dinq to an error or a change with time.
Operation
lnverter stops at lnverter alarm (both MC2 and MC3 are turned
off).
lnverter operation
IS
automatically switched to commercial
power supply operation at inverter alarm(MC2: On, MC3: OFF).
-
- .
Parameter. Factory
Name
.
-
Setting Range
Number
Setting
.
,
.
,
9999
O to
Forward-reverse 0 , 1 , 1 0 , 1 1 , 2 0 , 2 1 0
12a
:
act~on selection
129
'
PI proportional band 0.1 to 1000% 9999 1 00%
0.1 to 3600 second,
130 Integral tlme
1 second
'
9999
131 - Upp'er l i m ~ t 0 to loo%, 9999 9999
132 Lower limit 0 to loo%, 9999 9999
Not switched automatically.
Switched
to commercial power supply operation when the
output frequency exceeds the set value.
I
I
I I
- .
.
For setting or adjustment, the following must be done:
-
(1) Pr. 128)o Pr. 1 3 3 . ~ 1 control parameter settings
.
.
-.
(2) 110 and PI control terminal settings
'(3)
Connection of terminals RT and SD