5-141
Using J01 enables switching between normal and inverse operations against the PID control output, so you can specify an
increase/decrease of the motor rotating speed to the difference (error component) between the commanded (input) and
feedback amounts, making it possible to apply the inverter to air conditioners. The terminal command
IVS
can also switch
operation between normal and inverse.
For details about the switching of normal/inverse operation, refer to the description of Switch normal/inverse operation
IVS
(E01 to E07, data = 21).
Configuring the manual speed command/primary frequency command with the and keys under PID
control
When function code F01 is set at "0" ( / keys on keypad) and frequency command 1 is selected as a manual speed
command or primary frequency command (Frequency setting via communications link: Disabled; Multi-frequency setting:
Disabled; PID control: Disabled), defining the LED monitor as a speed monitor in Running mode enables modification of
the manual speed command or primary frequency command using the
and keys.
In Programming or Alarm mode, the manual speed command or primary frequency command cannot be modified with the
and keys, so switch to Running mode beforehand.
The figure below illustrates how the manual speed command or primary frequency command entered via the keypad is
translated to the final manual speed command/final primary frequency command .
The configuration procedure is the same as that for usual frequency setting.
J02
PID Control (Remote command SV)
J02 sets a command source that specifies a command value (
SV
) to apply under PID control.
Data for J02
Function
Refer to:
0
/
keys on keypad
Specify the PID command using the
/
keys on the keypad.
[ 1 ]
1
PID command 1 (Analog input: Terminals [12], [C1] and [V2])
Voltage input to the terminal [12] (0 to
±
10 VDC, 100% PID command/
±
10 VDC)
Current input to the terminal [C1] (4 to 20 mA DC, 100% PID command/ 20 mA DC
Voltage input to the terminal [V2] (0 to
±
10 VDC, 100% PID command/
±
10 VDC)
[ 2 ]
3
Terminal command
UP
/
DOWN
Using the
UP
or
DOWN
command in conjunction with PID display coefficients (specified
by E40 and E41) with which the command value is transformed to virtual physical value
etc., you can specify 0 to 100% of the PID command (
±
100% for PID dancer control).
[ 3 ]
4
Command via communications link
Use function code S13 that specifies the communications-linked PID command. The
transmission data of 20000 (decimal) is equal to 100% (maximum frequency) of the PID
command.
[ 4 ]
Summary of Contents for FRENIC-MEGA
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