Manual Torque Boost Selection; Automatic Torque Boost Selection; Torque Boost Selection Block Diagram (V/F Control) - GE VAT2000 Instruction Manual

A02-0

Manual torque boost selection

This setting allows increase the torque at low speed for V/f control. When manual torque
boost is enabled, this will be valid regardless of the automatic torque boost selection state.
A02-1

Automatic torque boost selection

The automatic torque boost optimises the V/f control. The functions R1 drop compensation,
slip compensation and maximum torque boost functions will be enabled.
(Note 1)
(Note 2)
S lip com pe nsa tio n
settin g
(A 02 -5 )
Set frequency
M an ua l torqu e b oo st
settin g
(A 0 2-2)
S q ua re red uction to rq ue
settin g
(A 0 2-3)
R 1 drop com pe nsa tio n
settin g
(A 0 2-4)
M axim u m to rqu e bo ost
settin g
(A 0 2-6)
6. Control Functions and Parameter Settings
Is possible to validate only the slip compensation function when manual torque
boost is selected, setting the slip compensation function (A02-5). All other
parameters (A02-3, 4, 6) should be set to 0.
The square reduction torque setting, for quadratic loads, is always valid
regardless of the torque boost selection state.
To invalidate the square reduction torque setting, set (A02-3) to 0.

Torque boost selection block diagram (V/f control)

A u to m a tic torq u e
b oo st sele ctio n
(A 0 2-1)
2 :O N
1 :O F F
+
+
M an ua l torqu e
b oo st sele ctio n
(A 0 2-0)
2 :O N
+
1 :O F F
-
A u to m a tic torq u e
b oo st sele ctio n
+
+
O verloa d lim it
fu nction
+
+
(A 0 2-1)
2 :O N
1 :O F F
6-33
Fre q ue ncy
com m an d
+ Vo ltag e
V /f
com m an d
+