Actual signals and parameters
175
20.03
MAXIMUM CURRENT Defines the allowed maximum motor current.
0.0 … x.x A
Current limit
0 …10·x.x
20.04
TORQ MAX LIM1
Defines the maximum torque limit 1 for the drive.
0.0 … 600.0%
Value of limit in percent of motor nominal torque.
0 … 60000
20.05
OVERVOLTAGE
CTRL
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 NO) to allow chopper operation.
OFF
Overvoltage control deactivated.
0
ON
Overvoltage control activated.
65535
20.06
UNDERVOLTAGE
CTRL
Activates or deactivates the undervoltage control of the intermediate DC link.
If the DC voltage drops due to input power cut off, the undervoltage controller
will automatically decrease the motor speed in order to keep the voltage above
the lower limit. By decreasing the motor speed, the inertia of the load will cause
regeneration back into the drive, keeping the DC link charged and preventing
an undervoltage trip until the motor coasts to stop. This will act as a power-loss
ride-through functionality in systems with a high inertia, such as a centrifuge or
a fan.
OFF
Undervoltage control deactivated.
0
ON
Undervoltage control activated.
65535
20.07
MINIMUM FREQ
Defines the minimum limit for the drive output frequency. The limit can be set
only if parameter
= SCALAR.
-300.00 … 50 Hz
Minimum frequency limit.
Note:
If the value is positive, the motor cannot be run in the reverse direction.
-30000 …
5000
20.08
MAXIMUM FREQ
Defines the maximum limit for the drive output frequency. The limit can be set
only if parameter
-50 … 300.00 Hz
Maximum frequency limit
-5000 …
30000
20.11
P MOTORING LIM
Defines the allowed maximum power fed by the inverter to the motor.
0 … 600%
Power limit in percent of the motor nominal power.
0 … 60000
20.12
P GENERATING LIM
Defines the allowed maximum power fed by the motor to the inverter.
-600 … 0%
Power limit in percent of the motor nominal power.
-60000 … 0
20.13
MIN TORQ SEL
Selects the minimum torque limit for the drive. The update interval is 100 ms.
MIN LIM1
Value of parameter
.
1
AI1
Analogue input AI1. See parameter
on how the signal is converted to a
torque limit.
2
AI2
See selection AI1.
3
AI5
See selection AI1.
4
PARAM 20.18
Limit given with 20.18
5
NEG MAX TORQ
Inverted maximum torque limit defined with parameter
6
20.14
MAX TORQ SEL
Defines the maximum torque limit for the drive. The update interval is 100 ms.
MAX LIM1
Value of parameter
.
1
AI1
Analogue input AI1. See parameter
on how the signal is converted to a
torque limit.
2
Index
Name/Selection
Description
FbEq
Summary of Contents for ACS 800 Series
Page 1: ...ACS800 Firmware Manual Crane Control Program N697 ...
Page 4: ......
Page 26: ...Start up and control through the I O interface 26 ...
Page 36: ...Quick start up guide 36 ...
Page 52: ...Control panel 52 ...
Page 105: ...Program features 105 Figure Control diagram for Shaft synchronisation executed in 20 ms ...
Page 128: ...Program features 128 ...
Page 150: ...Application macros control location EXT1 EXT2 150 ...
Page 228: ...Actual signals and parameters 228 ...
Page 299: ...Adaptive Programming examples for crane control 299 ...
Page 305: ...Adaptive Programming examples for crane control 305 ...
Page 318: ...Analogue Extension Module 318 ...
Page 332: ...Additional data actual signals and parameters 332 ...
Page 334: ...DriveWindow 334 ...
Page 335: ...Control block diagrams 335 Control block diagrams ...
Page 336: ...Control block diagrams 336 ...
Page 337: ...Control block diagrams 337 ...
Page 338: ...Control block diagrams 338 ...
Page 340: ...www abb com drives www abb com drivespartners Contact us 3AFE68775230 Rev E EN 2012 09 25 ...