2-74 Parameter Descriptions
7000-TD002A-EN-P – September 2007
Torque Limit Overload [Trq Lmt Overload]
Linear Number: 658
Default Value: 1.00
Minimum Value: 0.00
Maximum Value: 4.00
Access Level: Advanced
Read/Write: Read/Write
This parameter is used to prevent the drive from tripping on an overload fault. For a drive programmed
with a Torque Limit Motoring greater than 1.00 (it may be needed for starting or other certain intermittent
load conditions), when the drive reaches 90% of its maximum thermal capability, it will automatically limit
the torque to the value specified in the parameter Trq Lmt Overload. This may prevent the drive from
tripping on overload and will keep the process running. Please note that this will result in the motor
slowing down. This parameter should be set to 1.00 pu, and setting it to a value equal to or greater than
Torque Limit Motoring would lead to a drive trip on overload.
Power Limit Motoring [Pwr Lmt Motoring]
Linear Number: 747
Default Value: 1.50
Minimum Value: 0.00
Maximum Value: 4.00
Access Level: Advanced
Read/Write: Read/Write
This parameter specifies the maximum motor power when motoring. The torque command will be
reduced as required to keep the motor power from exceeding this limit. A value of 1.00 corresponds to
rated motor power.
Power Limit Braking [Pwr Lmt Braking]
Linear Number: 748
Default Value: 1.50
Minimum Value: 0.00
Maximum Value: 4.00
Access Level: Advanced
Read/Write: Read/Write
This parameter specifies the maximum motor power when braking or regenerating. The torque command
will be reduced as required to keep the motor power from exceeding this limit. A value of 1.00
corresponds to rated motor power.
Torque Command 0 Tachometer [TrqCmd0 Tach]
Linear Number: 641
Default Value: 0.00
Minimum Value: 0.00
Maximum Value: 4.00
Access Level: Service
Read/Write: Read/Write
This parameter specifies the initial torque when starting with a tachometer. The default value allows the
drive to start providing zero torque and ramp up to the required torque determined by the speed control
loop. By setting this to a value above 0.00 provides more torque until the control loops can take over.
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