- 11 -
11. Various adjustment functions
11-1. Ramp higher limit (high power)
Output is set to ramp higher limit (high power) by key sequence
‘
1-7. Ramp higher limit selection
’
or key input allocation is set by
key sequence
‘
1-8. Ramp higher limit setting
’
(range: 0.1 - 100%).
Because with ramp higher limit, maximum output is adjusted by control input signal being 100%, output ramp of the PAC18A is adjusted
according to the control input signal.
11-1-1. Ramp higher limit according to external adjuster
Adjustment location is allocated to VR1 or VR2 by
‘
1-7. Ramp higher limit selection.
’
If allocated to VR1, connect external adjuster
B characteristics 10kΩ (VR) to terminal block No. 4
-5-6.
Ramp higher limit adjustment and ramp lower limit adjustment cannot be allocated to the same external adjuster VR.
Ramp higher limit setting range: 0.1 - 100%
Note: Output becomes ramp lower limit value if output is less than 3% of control input.
Output becomes ramp higher limit value if output is at least 97% of control input.
Note: Operation would become as given in External adjuster error table 1 if the external
adjuster were broken.
11-2. Ramp lower limit (low power)
Set adjustment source by key sequence
‘
1-6. Ramp lower limit setting.
’
With the ramp lower limit function, output can be adjusted from 0 to 99.9% when control input signal is 0%.
Used when you want output even when control input is 0%.
Because minimum output is adjusted, output ramp of the PAC18A relative to the control input signal is changed.
11-2-1. Ramp lower limit according to external adjuster
Adjustment location is allocated to VR1 or VR2 by key sequence
‘
1-6. Ramp lower limit setting.
’
If allocated to VR2, connect external adjuster B char
acteristics 10kΩ (VR) to terminal block No. 4
-7-6.
Ramp higher limit adjustment and ramp lower limit adjustment cannot be allocated to the same external adjuster VR.
Control input (%)
100
0
O
u
tp
u
t (%)
100
Ramp lower limit
output characteristics
0
50
25
Adj
u
st
ment
range
97
3
Ramp lower limit setting range: 0.0
–
99.9%
Note: Output becomes ramp lower limit value if output is less than 3% of control input.
Output becomes ramp higher limit value if output is at least 97% of control input.
Note: Output is changed by percentage of change of key sequence
‘
1-9. Slow-up
’
and
‘
1-10. Slow-down
’
when settings of key sequence
‘
1-6. Ramp lower limit setting
’
or
ramp adjustment by external adjuster.
Note: Operation would become as given in External adjuster error table 2 if the external
adjuster were broken.
External adjuster error table 1
VR1/VR2
Ramp higher
limit output value
ձ
Break
100%
ղ
Break
0%
ճ
Break
0%
External adjuster error table 2
VR1/VR2
Ramp lower limit
output value
ձ
Break
100%
ղ
Break
0%
ճ
Break
0%
Control input (%)
100
0
Ou
tp
ut (
%
)
100
Ramp higher limit output
characteristics diagram
0
A
djustment
range
75
50
3
97
6
5
4
R1
R3
R2
䐟
䐠
䐡
VR1
B10k
䃈
4
6
7
R1
R3
L2
䐠
䐡
䐟
VR2
B10k
䃈
Allocation Terminal
block No.
Terminal
symbol
Adjuster No.
VR1
VR2
4
5
6
4
7
6
R1
R2
R3
R1
L2
R3
䐟
䐠
䐡
䐟
䐠
䐡
External adjuster terminal block layout
6
5
4
R1
R3
R2
䐟
䐠
䐡
VR1
B10k
䃈
4
6
7
R1
R3
L2
䐠
䐡
䐟
VR2
B10k
䃈
Allocation Terminal
block No.
Terminal
symbol
Adjuster No.
VR1
VR2
4
5
6
4
7
6
R1
R2
R3
R1
L2
R3
䐟
䐠
䐡
䐟
䐠
䐡
External adjuster terminal block layout