WEG CFW700, Руководство по программированию и устранению неисправностей

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Applications
19
CFW700 | 19-7
Table 19.1: Example of a CFW700 application as a PID regulator
Parameter Description
P1003=1 Selection of the PID regulator application
P0205=1012 Selection of the main parameter (Process variable)
P0206=1011 Selection of the secondary parameter (PID Setpoint)
P0207=0002 Selection of the bar graph parameter (Motor Speed)
P0208=100.0 % Main display scale factor
P0209=0 Main display engineering unit: none
P0210=1 Main display decimal point: wxy.z
P0211=100.0 % Secondary display scale factor
P0212=1 Secondary display decimal point: wxy.z
P0213=1800 Bar graph full scale
P0220=1 LOC/REM selection: Remote operation
P0222=7 REM speed reference: SoftPLC
P0263=1 DI1 function: Start/Stop
P0265=20 DI3 function: Function 1 of the application (Manual/Auto)
P0266=2 DI4 function: General enable
P1024=0 PID regulator action type: direct
P0236=6 AI2 function: Function 2 of the application
P0237=1.000 AI2 gain
P0238=1 AI2 signal type: 4 to 20 mA
P0239=0.00 % AI2 offset
P0240=0.15 s AI2 filter
P1018=25.0 PID feedback scale
P1016=0 PID setpoint selection: keypad
P1025=80 % PID setpoint
P1026=1 Automatic setting of P1025: Active
P1027=1 PID setpoint backup via P1025: Active
P1023=3.0 s PID setpoint filter
P0133=1000 rpm Minimum speed reference
P0134=1800 rpm Maximum speed reference
P1020=1.000 PID proportional gain
P1021=0.430 PID integral gain
P1022=0.000 PID differential gain
P0217=0 Zero speed disable: Inactive
P1001=1 SoftPLC command: Run program
19.2.3 Sleep Mode
The sleep mode is a useful resource for saving energy when using the PID regulator.
In many PID applications energy is wasted by keeping the motor turning at the minimum speed when, for instance,
the pressure or the tank level keeps increasing.
The sleep mode works together with the zero speed disable function.
In order to activate the sleep mode, enable the zero speed disable by programming P0217=1 (Active). The disable
condition is the same as for the zero speed disable without PID. Refer to the
section 12.4 - Zero Speed Logic .
In order to leave the zero speed disable mode, when in automatic PID mode, besides the condition programmed
in P0218, it is necessary that the PID error (the difference between the setpoint and the process variable) is greater
than the value programmed in P1028.
DANGER!
While in the sleep mode, the motor may turn at any moment because of the process conditions. If
it is wished to handle the motor or to perform any type of maintenance, remove the power from the
inverter.