19
Output 1 lower limit setting (Setting range: -3.0 to 103.0%)
Output 1 upper limit setting (Setting range: -3.0 to 103.0%)
Output 2 lower limit setting (Setting range: -3.0 to 103.0%)
Output 2 upper limit setting (Setting range: -3.0 to 103.0%)
[Description]
• These setting is not required unless
necessary especially.
• These are used when the output is
contact output or SSR/SSC drive
output.
• Output pulse width (ON time) is set
not to lower below the set value
(PLC1, PLC2).
Also, output pulse width (ON time)
is set not to raise above the set value
(PHC1, PHC2). (This determines
the minimum value of output OFF
time).
• This function prevents flashing
when combustion is controlled by
ON/OFF of gas supply.
Example) Altering lower limit pulse width limiter from
20% to 10%
Key operation
Description
Press the SEL key to display P.
Press the SEL key repeatedly until
is displayed.
Press the or key to display
10.
Press the DATA key once.
Current lower limit pulse width
limitter (20) is displayed.
Press the SV key when you need to
display the operation status display.
After pressing the ENT key, the
lower limit pulse width limiter is
registered.
Display
SEL
ENT
SV
DATA
SEL
Related parameter: TC (Page 11)
TC2 (Page 16)
100
TC
PLC1 =
×
(Minimum ON pulse
width [sec.])
PHC1 = 100 –
×
( M i n i m u m
OFF pulse width [sec.])
PLC2 =
×
(Minimum ON pulse
width [sec.])
PHC2 = 100 –
×
( M i n i m u m
OFF pulse width [sec.])
TC : Proportional cycle
TC2 : Control output 2 proportional
cycle
100
TC
100
TC2
100
TC2
PHC
(TC = 30 sec.)
30 (sec.)
0
Input
100(%)
Output
PLC
(No display prior to delivery)
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