Limits - ABB ACS355 series User Manual

222 Actual signals and parameters
All parameters
No. Name/Value

20 LIMITS

2001 MINIMUM
SPEED
-30000...
30000 rpm
2002 MAXIMUM
SPEED
0...30000 rpm
2003 MAX
CURRENT
0.0...1.8 · I
2N
2005 OVERVOLT
CTRL
DISABLE
ENABLE
EN WITH
BRCH
Description
Drive operation limits.
Speed values are used in vector control and frequency
values are used in scalar control. The control mode is
selected by parameter
Defines the allowed minimum speed.
A positive (or zero) minimum speed value defines two
ranges, one positive and one negative.
A negative minimum speed value defines one speed range.
Speed
2001 value is < 0
2002
Allowed
speed range
0
2001
Minimum speed
Defines the allowed maximum speed. See parameter
MINIMUM SPEED.
Maximum speed
Defines the allowed maximum motor current.
A Current
Activates or deactivates the overvoltage control of the
intermediate DC link.
Fast braking of a high inertia load causes the voltage to rise
to the overvoltage control limit. To prevent the DC voltage
from exceeding the limit, the overvoltage controller
automatically decreases the braking torque.
Note: If a brake chopper and resistor are connected to the
drive, the controller must be off (selection DISABLE) to
allow chopper operation.
Overvoltage control deactivated
Overvoltage control activated
Both braking chopper and overvoltage controller are
enabled so that the braking chopper capability is used to its
maximum and the overvoltage controller is activated above
that.
9904 MOTOR CTRL
Speed
2001
2002
Allowed
speed range
2001
t
0
-(2001)
Allowed
speed range
-(2002)
Def/FbEq
MODE.
0 rpm
value is > 0
t
1 = 1 rpm
2001 E: 1500 rpm
/
U: 1800 rpm
1 = 1 rpm
1.8 · I
1 = 0.1 A
ENABLE
0
1
2
A
2N