Parameter Description
process.
• The relationship between PID auto adjustment basis and PID parameters is shown as
following diagram:
Auto adjustment basis
for PID parameters
PID Paraneters
P641/P642/P643
P172/P173/P174
The minimum
adjustment basis
Adjustment basis
during the process
The maximum
adjustment basis
D changes from P.174 to P.643 linearly
I changes from P.173 to P.642 linearly
P changes from P.172 to P.641 linearly
5.92 Pre-drive control parameters (P.645~P.647)
P.645 “Pre-drive speed gain”
P.646 “Pre-drive torque increase proportion”
P.647 “Pre-drive torque increase delay time”
Parameter
Setting range Remarks
Pre-drive torque increase proportion
Pre-drive torque increase delay time
<Setting>
• The diagram of auto roll alternation is as follows, there are two inverters to control the
replacing upper roll and replacing lower roll.
M1 is “replacing lower roll”, M2 is “replacing upper roll” or “pre-drive roll”