110 CHA NGE PARA METERS
6.9.6.1 FLD WEA KENIN G MENU / Field weakening enable PIN 103
6.9.6.2 FLD WEAKENING MENU / Field w eakening proportional gain PIN 104
Generally an increased proportional value will speed up the response of the armature voltage when operating
around the spillover voltage point, and a decrease will slow the response. Increasing the value too far may
cause instability of the armature voltage and possible over-volting of the commutator.
6.9.6.3 FLD WE AKENING MENU / Field w eakening integral time constant PIN 105
Generally an increased integral time constant will slow the response of the armature voltage when operating
around the spillover voltage point, and a decrease will improve the response. Decreasing the value too far
may cause instability of the armature voltage and possible over-volting of the commutator.
6.9.6.4 FLD WEAKENING MENU / Field w eakening derivative time constant PIN 106
In general, keep this parameter betw een 5 and 10 % of the setting of 105)FLD WK INT T C ms.
This gives good attenuation to the response of the w eakening loop at high frequencies. A higher setting may
cause instability of the armature voltage and possible over-volting of the commutator.
FLD WEA KENING MENU 4
103)FLD WEA K ENABLE
103)FLD WEA K ENABLE
DISABLED
PARA METER RANGE DEF AULT PIN
FLD WE A K EN ABLE ENABLED OR DIS ABLED DIS ABLED 103
This allows the field weakening
to be enabled or disabled.
FLD WEA KENING MENU 4
104)FLD WK PROP G AIN
104)FLD WK PROP G AIN
50
PARA METER RANGE DEF AULT PIN
FLD WK PROP G AIN 0 to 1000 50 104
This sets the proportional gain
of the field weakening loop.
FLD WEA KENING MENU 4
105)FLD WK INT TC ms
105)FLD WK INT TC ms
4000
PARA METER RANGE DEF AULT PIN
FLD WK INT T C ms 0 to 20000 ms 4000 105
This sets the integral time
constant of the weakening loop
FLD WEA KENING MENU 4
106)FLD WK DRV TC ms
106)FLD WK DRV TC ms
200
PARA METER RANGE DEF AULT PIN
FLD WK DRV T C ms 10 to 5000 ms 200 106
This sets the derivative time
constant of the weakening loop
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