Omron M1 Series User Manual page 478

8 Other Functions
DOWN control," the output frequency is inherited (balanceless-bumpless). If PID control is set to
"Opposite operation available" (PID Control Function Selection (300EHex-02Hex) = 4, 5), and PID
output is in opposite operation, the output frequency of PID control is not inherited and becomes 0
Hz.
"PID (20: PID enabled/disabled)" ON -> OFF operation
When PID operation is restored by switching the PID terminal from ON to OFF during normal opera-
tion, and PID process control (300EHex-02Hex = 1, 2, 4, 5) is enabled, the output frequency during
switching is inherited in the PID output (MV) (balanceless-bumpless), and shifted to PID control.
When inverse operation is being performed due to a negative setting of the frequency reference dur-
ing PID cancellation, and the PID control is set to "Opposite operation not available"
(300EHex-02Hex = 1, 2), the absolute value of the output frequency is inherited in the PID output
(MV), and switching occurs from reverse output to normal output.
• Normal/inverse operation switching "IVS"
In modes in which process control is performed by the PID control function built into the inverter, PID
control enable (operation based on PID controller) and PID control disable (operation based on the
manual frequency setting) can be switched by the "PID (20: PID enabled/disabled)" terminal. Input
Terminal [AI1] Normal/Inverse Operation for 1st Frequency Command and PID Control Function Se-
lection (300EHex-02Hex) can be combined with the Switch normal/inverse operation "IVS" signal on
each operation, and determination of normal/inverse operation is performed as follows.
When PID control is enabled: Normal/reverse operation of PID controller output (frequency setting)
PID Control Function Selection
(300EHex-02Hex)
1: Process normal operation
4: Process normal operation, op-
posite operation available
2: Process (inverse operation)
5: Process inverse operation, op-
posite operation available
When PID control is disabled: Normal/reverse operation of manual frequency setting
Input Terminal [AI1, AI2] Normal/
Inverse Operation for 1st Fre-
quency Command
(3006Hex-36Hex)
0: Normal
1: Inverse
Additional Information
When process control is performed by the PID control function built into the inverter, the Nor-
mal/Inverse switching "IVS" signal is used for switching normal/reverse operation of the output
(frequency setting) of the PID controller, and is not used for normal/reverse operation switching
in the manual frequency setting.
• PID differential/integral reset "PID-RST"
8-124
Input signal IVS
OFF
ON
OFF
ON
Input signal IVS
-
-
M1 Series EtherCAT Type User's Manual (I670)
Operation
Normal operation
Reverse operation
Reverse operation
Normal operation
Operation
Normal operation
Reverse operation