Operating Instructions

Descriptions of Parameter Settings

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Fig. 101:

Switch according to the deviation:

When the deviation absolute value between the set point and feedback is smaller than Pr.08-76 (PID2 Parameter

Switch Deviation 1), the first group PID parameters are used.

When the deviation absolute value between the set point and feedback is larger than Pr.08-77 (PID2 Parameter

Switch Deviation 2), the second group PID parameters are used.

When the deviation absolute value between the set point and feedback is between Pr.08-76 and Pr.08-77, the PID

parameter is the linear interpolation value between the two PID parameter groups.

Fig. 102:

Pr.

Explanation

Settings

Default

08-78

Allowed reverse running time after

start-up

0.0 to 6553.5 sec.

0.0

When Pr.08-78 is not set to 0, the allowed reverse running time after start-up is enabled.

When it is set to 1 second, the PID control is not allowed to change the running direction within 0–1 seconds of

starting time (Pr.08-21=0), and is allowed to change after 1 second of starting time (Pr.08-21=1).