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4 7 Output Power Limits
4 7 Output Power Limits
In certain system the heater ( or cooler ) is over-designed such that the
In certain system the heater ( or cooler ) is over-designed such that the
process is too heavily heated or cooled. To avoid an excessive overshoot
process is too heavily heated or cooled. To avoid an excessive overshoot
and/or undershoot you can use the Power Limit function.
and/or undershoot you can use the Power Limit function.
Output 1 power limit PL1 is contained in User Menu. If output 2 is not used for
Output 1 power limit PL1 is contained in User Menu. If output 2 is not used for
cooling ( that is COOL is not selected for OUT2 ), then PL2 is
cooling ( that is COOL is not selected for OUT2 ), then PL2 is
controller is used for ON-OFF control, then both PL1 and PL2 are
controller is used for ON-OFF control, then both PL1 and PL2 are
Operation:
Press
Press
for 3 seconds, then press
for 3 seconds, then press
The PL1 and PL2 are adjusted by using up-down keys with range 0 - 100%.
The PL1 and PL2 are adjusted by using up-down keys with range 0 - 100%.
Example:
OUT2=COOL, PB1=10.0 C, CPB=50, PL1=50, PL2=80
OUT2=COOL, PB1=10.0 C, CPB=50, PL1=50, PL2=80
The output 1 and output 2 will act as following curves:
The output 1 and output 2 will act as following curves:
MV1
100%
50%
OUT1
MV2
100%
80%
5 C
5 C
OUT2
NOTE:
NOTE:
The adjusting range of MV1 ( H ) and MV2 ( C ) for manual control and/or failure
The adjusting range of MV1 ( H ) and MV2 ( C ) for manual control and/or failure
transfer are not limited by PL1 and PL2.
transfer are not limited by PL1 and PL2.
several times to reach PL1 and PL2.
several times to reach PL1 and PL2.
B
B
PV
10 C
10 C
PV
hidden
hidden
. If the
. If the
hidden.
hidden.
UM25001C
Menu
PL1
PL1
PL2
PL2
Figure 4.5
Figure 4.5
Power Limit Function
Power Limit Function
75
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