LiteOn EVO 6800 Series - Page 95

95
Monitor U4-08 displays the frequency reference increased or reduced for the PID output.
1: Frequency Reference
Monitor U4-08 displays the frequency reference value.
 b5- 27 PID Output Reverse Selection 2
Determines whether a negative PID output reverses the direction of drive operation. When the
PID function is used to trim the frequency reference (b5-00 = 3 or 4), this parameter has no
effect and the PID output will not be limited。
No.
Name
Setting Range
Default
b5-27
PID Output Reverse Selection 2
0 、 1
1
Note : Set in b1-03 for the stop reverse, set b5-27 is ignored
0: Reverse Disabled
Negative PID output will be limited to 0 and the drive output will be stopped.
1: Reverse Enabled
Negative PID output will cause the drive to run in the opposite direction.
 b5- 28 PID Disconnection Output Frequency
When a PID feedback disconnection alarm occurs(FbL), the drive will run at the frequency set
to b5-28, and return to PID control when disconnection alarm is reset.
No.
Name
Setting Range
Default
b5-28
PID Disconnection Output Frequency
0.0 Hz to <1>
30.0 Hz
<1> The upper limit is determined by the values set to d1-02 (Maximum Output Frequency), d1-13 (Motor 2
Maximum Output Frequency) and L2-00 (Frequency Command Upper Limit).
b6 DWELL
The Dwell function temporarily holds the frequency command to prevent speed loss when
starting and stopping a heavy load. When driving a PM motor, the pause reduces the
oscillations during acceleration. The Dwell function is illustrated below.
Note: When using Dwell at stop, set b1-02 (Stopping Method Selection) to 0 (Ramp to Stop).