WEG MVW3000 Series, Руководство по программированию

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5
DETAILED PARAMETER DESCRIPTION
Table 5.63: Error Value Inv
P0527 Function
0 No
1 Yes
✓
NOTE!
This parameter is only visible on the HMI when: the PID function is active, P0203 = 1 (PID regulator).
P0528 - Process variable scale factor
P0529 - Process Variable Decimal Point
Adjustable range: P0528 = 0 to 9999
P0529 = 0 to 3 Factory setting: P0528 = 1000
P0529 = 1
Acesso: Menu
→
Configurations
→
Functions
→
PID
Description:
P0528 and P0529 define how P0040 (Value of process variable (PID)) will be displayed.
P0529 defines the number of digits after the decimal point.
P0528 must be adjusted according to the equation below:
P0528 =
Process F.S.V. indication
×
( 10 )
P0529
Gain (AI2 or AI3)
Where:
Process F.S.V. indication: process variable full-scale value, corresponding to 10 V (20 mA) at the Analog Input
(AI2 or AI3) used as feedback.
Example 1 (Bar Pressure Transducer 0 to 25 bar - output 4 to 20 mA):
– Desired indication: 0 to 25 bar (Process F.S.V).
– Feedback input: AI3.
– Gain AI3 = P0242 = 1.000.
– Signal AI3 = P0243 = 1 (4 to 20 mA).
– P0529 = 0 (no positions after the decimal point).
P0528
=
25
×
( 10 )
0
1.000
=
25
Example 2 (factory default settings):
– Desired indication: 0.0 % to 100 % (Process F.S.V).
– Feedback input: AI2.
– Gain AI2 = P0238 = 1.000.
– P0529 = 1 (one position after the decimal point).
P0528 =
100.0
×
( 10 )
1
1.000
= 1000
✓
NOTE!
This parameter is only visible on the HMI when: the PID function is active, P0203 = 1 (PID regulator).
P0533 - Process variable X value
P0534 - Process variable Y value
P0535 - Output N = 0 PID
Adjustable range: P0533 = 0.0 to 100.0 %
P0534 = 0.0 to 100.0 %
P0535 = 0 to 100 % Factory setting: P0533 = 90.0 %
P0534 = 10.0 %
P0535 = 0 %
Acesso: Menu
→
Configurations
→
Functions
→
PID
MVW3000 | 5-88