Delta MH300 Series - Page 483

Chapter 12 Description of Parameter Settings
MH300
12.1-08-16

08-67
Master and Auxiliary Reverse Running Cutoff Frequency
Default: 10.0
Settings 0.0–100.0%
 100% corresponds to Pr.01-00 the Maximum operation frequency
 In some cases, it is only possible for the PID to control the value setting and the feedback in the
same situation when the PID output frequency is negative (the motor is reversed). However, an
excessively high reversal frequency is not allowed in some cases, and Pr.08-67 is used to
determine the upper limit of the reversal frequency

08-68
PID Deviation Limit
Default: 0.00
Settings 0.00–100.00%
 When Pr.08-68 is not set to 0, the PID deviation limit function is enabled.
 When PID deviation ≤ PID deviation limit, PID stops adjusting action. It means the PID output
frequency maintains the previous value and this function is effective for some closed-loop control
applications.

08-69
Integral Separation Level
Default: 0.00
Settings 0.00–100.00%
 Reduces overshoot when overshoot occurs in the PID feedback at start-up.
 When Pr.08-69 is not set to 0, the integral separation function is enabled.
 The benchmark for the integral separation level is the PID error%.
 The integral separation function activates only once at start-up.
 When PID deviation ≥ Pr.08-69, the integral effect is cancelled to avoid the increasing system
overshoot due to the integral effect. When PID deviation is smaller than Pr.08-69, the integral
effect is activated to eliminate the steady-state error.
08-70
Smart Start-up Level
Default: 5.00
Settings 0.00–100.00%

08-71
Smart Start-up Frequency Command
Default: 0.00
Settings 0.00–599.00 Hz

08-72
Smart Start-up Acceleration Time
Default: 3.00
Settings 0.00–600.00 sec.
 When Pr.08-71 is not set to 0, the smart start function is enabled.
 The benchmark for the smart start level is the percentage of PID deviation.
 Use the smart start-up function to reduce overshoot when overshoot occurs in the PID feedback
at start-up. The smart start-up activates only once at start-up.
 When the smart start-up function is enabled, it starts with the Pr.08-71 frequency and Pr.08-72
acceleration time (Pr.08-72 acceleration time is the time that it accelerates to Pr.08-71).