WEG CFW-11 Programming Manual page 283

Pneumatic system pressure
Pneumatic system flow
Hydraulic system pressure
Hydraulic system flow
Temperature
Level
NOTE!
In the level control case, the setting of the integral gain will depend on the time that it takes for the
reservoir to pass from the minimum acceptable level to the desired level, in the following conditions:
1. For the direct action the time must be measured with the maximum input flow and the minimum
output flow.
2. For the reverse action the time must be measured with the minimum input flow and the maximum
output flow.
A formula for calculating the P0521 initial value in function of the system response time is presented next:
P0521 = 0.02 / t
Where t = time (in seconds).
P0523 – PID Ramp Time
Adjustable 0.0 to 999.0 s
Range:
Properties:
Access groups 01 PARAMETER GROUPS
via HMI:
Description:
This parameter adjusts the ramp time of the setpoint used in the PID regulator function. The ramp prevents abrupt
setpoint transitions to reach the PID regulator.
The factory setting time (3.0 s) is normally adequate for the majority of the applications, as those listed in the
on page 20-11.
P0524 – PID Feedback Selection
Adjustable 0 = AI1
Range: 1 = AI2
2 = AI3
3 = AI4
Properties: CFG
Access groups 01 PARAMETER GROUPS
via HMI:
Table 20.3 - Suggestions for PID regulator gain settings
Quantity
Proportional
46 PID Regulator
46 PID Regulator
Gains
Integral Differential
P0520 P0521 P0522
1 0.043 0.000
1 0.037 0.000
1 0.043 0.000
1 0.037 0.000
2 0.004 0.000
1 See note 0.000
PID Regulator [46]
Factory 3.0 s
Setting:
Table 20.3
Factory 1
Setting:
20-11
20