Etel DSC2P - Page 77

ETEL Doc. - Operation & Software Manual # DSC2P 903 / Ver. F / 3/6/05 Chapter B: System setup & tuning
Operation & Software Manual
Direct Drives & Systems 77
Drive setting tool ok > Scope tool > PWR > K8=K9=K20=K21=0
Current saturation
(one at least) ?
Do a step (T=1 STI / Nb p.=200) M30 M31
Increase 'Do a step' size
Current rise high
enough ?
Higher P gain : K80 x 1,5
High freq.
oscillations ?
(noise)
Lower P gain : K80 / 2
Do a step (T=1 STI / Nb p.=1000) M30 M31
Constant error ?
Higher I gain : K81 x 1,5
High freq.
oscillations or
overcurrent ?
Lower I gain : K81 / 2
Do a step (T=1 STI / Nb p.=200) M30 M31
Saturation ?
(M30 >
K60)
Current regulator's basic tuning = OK
Reduce 'Do a step' size
YES
NO
NO
NO
YES
YES
NO
YES
YES
NO
YES
NO
M31 current rise
saturation
M31 bad current rise
M31 oscillations
no constant error
constant error
no more saturation
O
O
O
O
O
O
O
C
urren
t
regu
l
a
t
or
'
s
basic tuning: