Operating instructions
Issue 10/06 6 Commissioning
MICROMASTER 430
Operating Instructions (Compact)
53
PID controller structure
PID
MOP
ADC
PID
SUM
PID
PID
FF
USS
BOP link
USS
COM link
CB
COM link
ADC2
P2254
P2253
PID
RFG
PID
PT1
−
∆
PID
P2200
P2264
PID
PT1
PID
SCL
Output
PID
0
1
Motor
control
P2257
P2258
P2261
P2271
P2269
P2270
P2265
P2280
P2285
Example
Parameter Parameter text Example
P2200 BI: Enable PID controller P2200 = 1.0 PID controller active
P2253 CI: PID setpoint P2253 = 2224 PID-FF1
P2264 CI: PID feedback P2264 = 755 ADC
P2267 Max. PID feedback P2267 Adapt to the application
P2268 Min. PID feedback P2268 Adapt to the application
P2280 PID proportional gain P2280 Determined by optimizing
P2285 PID integral time P2285 Determined by optimizing
P2291 PID output upper limit P2291 Adapt to the application
P2292 PID output lower limit P2292 Adapt to the application
6.3.16.10 Staging
Motor staging allows the control of up to 3 additional staged pumps or fans, based
on a PID control system.
The complete system comprises a variable-speed
pump/fan that is controlled by the drive inverter, and a maximum of 3 additional
fixed-speed pumps/fans, that are controlled via contactors or motor starters. The
contactors or motor starter are controlled by outputs from the inverter. The diagram
below shows a typical pumping system. A similar system could be set up using
fans and air ducts, instead of pumps and pipes.
Motor staging stop mode
Using this parameter, the stop mode of external motors M1 - M3 is defined for an
OFF1 command.
0 Normal stop
1 Sequence stop
Staging-Configuration
Selects configuration of external motors (M1, M2, M3).
0 Motor staging disabled
1 M1 = 1X
2 M1 = 1X, M2 = 1X
3 M1 = 1X, M2 = 2X 1X .... 1x power
4 M1 = 1X, M2 = 1X, M3 = 1X 2X .... 2x power
5 M1 = 1X, M2 = 1X, M3 = 2X 3X .....3x power
6 M1 = 1X, M2 = 2X, M3 = 3X
7 M1 = 1X, M2 = 1X, M3 = 3X
8 M1 = 1X, M2 = 2X, M3 = 3X
0
P2370 = ...
0
P2371 = ...