Mitsubishi Electric Freqrol-A100 Instruction Manual page 157

4.8.4 Terminal Functions
(1) Terminal setting
1) To enable PI control, connect RT and SD. When these terminals remain disconnected,
ordinary inverter operation is performed without PI control action being carried out.
2), Input the set value to across inverter terminals 2-5 or set it in Pr. 133 and input the process
value signal to across inverter terminals 4-5. At this time, set 20 or 21 in Pr. 128.
3)
To input the deviation signal externally calculated, input it to across terminals 1-5. At this
time, set 10 or 11 i n P r l 128.
4) Setting method
Set value Pr. 133
Deviation signal Across inverter terminals 1-5
1 .
Set-5V to -loo%'
OV
to 0% and +5V
to +loo%.
Process value
1
Across inverter terminals 4-5 ) 4 m ~ corresponds to 0% and 20mA to 100%.
I
When 2, 3, 5, 12, 13 or 15 is set i n Pr. 73
(voltage selection) (5V is selected for terminal 1)
Set -lOV to -
loo%, OV to 0%
and
to
+,OO%.
4.8.5 Parameters
When 0, 1, 4, 10, 11 or 14 is set in Pr. 73
(voltage selection) (10V is selected for terminal 1)
I
(1) Parameter list
Parameter
Number
Name
Minimum Factory
I
setting Range
I
Increment
1
Setting
I
Remarks
128
129'
Forward-reverse action
selection
130'
PI proportional band
131
0, 1, 10, 11,20,21
Integral time
132
133'
Note: *The
settings
of
Pr. 129, 130 and 133 may also be changed during operation
0.1 to 1000%
9999
Upper limit
40
-
0.1 to 3600 seconds
9999
Lower limit
PI control set value for
PU operation
0, 10, 20: PI reverse action
O
11. 11. 21: PI forward action
0.1 %
0 to 100%
9999
Output terminal
assignment
0.1
seconds
0 to 100%
9999
0 to 100%
100%
0.1 %
0 to 9999
Set 9999 to exercise integral control
onl
.
second
0.1 %
0.01 %
Set 9999 to exercise proportional
control only.
9999
1
Upper limit value.
If the feedback value rises above this
setting, FUP is output.
9999
0%
Lower limit value.
If the feedback value falls below this
setting, FDN is output.
Made valid only when PU command
is given in the PU operation or PUIex-
temal combined operation mode.
1234
Used to assign the terminals from
which the upper and lower limit sig-
nals and forward (reverse) rotation di-
rection signal are output.