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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
process is too heavily heated or cooled. To avoid an excessive overshoot
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
cooling ( that is COOL is not selected for OUT2 ), then PL2 is
. If the
controller is used for ON-OFF control, then both PL1 and PL2 are
hidden
hidden.
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
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
cooling ( that is COOL is not selected for OUT2 ), then PL2 is
. If the
controller is used for ON-OFF control, then both PL1 and PL2 are
hidden
hidden.
Operation:
Press
for 3 seconds, then press
several times to reach PL1 and PL2.
The PL1 and PL2 are adjusted by using up-down keys with range 0 - 100%.
Press
for 3 seconds, then press
several times to reach PL1 and PL2.
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
The output 1 and output 2 will act as following curves:
OUT2=COOL, PB1=10.0 °C, CPB=50, PL1=50, PL2=80
The output 1 and output 2 will act as following curves:
PV
10 C
10 C
MV1
100%
50%
OUT1
PV
MV2
100%
80%
5 C
5 C
OUT2
NOTE:
The adjustable range of MV1 ( H ) and MV2 ( C ) for manual control and/or failure
transfer are not limited by PL1 and PL2.
NOTE:
The adjustable range of MV1 ( H ) and MV2 ( C ) for manual control and/or failure
transfer are not limited by PL1 and PL2.
Figure 4.5
Power Limit Function
Figure 4.5
Power Limit Function
Menu
PL1
PL2
PL1
PL2
