Rockwell Automation 9329 Drive Application Software Tension Control Gen. Units - Manual (Page 30)

FM – Tension Control
Drive Application Software – page 30 of 52
Return Parameters
Name Type Range Description
1 TrqRf_Pct REAL 0 to 200 Torque Reference Percent
4.7.1 TrqFb_Pu
The drive torque feedback is in per unit. A value of one (1) is equal to 100% torque
rating of the motor. This is the torque producing current of the motor. This value is
monitored and captured when the torque memory enable is set true.
Usage – This is the torque feedback from the drive.
4.7.2 DrvTrqRfJLoss_PU
All mechanical systems have losses. These consist of friction and windage. Along
with losses additional torque is required to accelerate the section. This is known has
inertia compensation. Both of these components are added together to produce
DrvTrqRfJLoss_PU. This value is in per unit. A value of one (1) is equal to 100%
torque rating to the motor. The Torque Memory Routine will subtract this value from
torque feedback if the torque feedback includes the losses compensation.
Usage – Connect to Drive Torque Reference J Loss in the JSR instruction.
4.7.3 TrqMemBoostEnbl
When the torque memory boost enable is set the captured Torque Feedback is
increased by the Torque Memory Boost Reference %. When the torque memory
boost is reset, the output is set back to the captured Torque Feedback.
Usage – Use this when the Captured Torque value needs to be increased.
4.7.4 TrqMemBoostRf_Pct
When the Torque Memory Boost is enabled, the captured Torque Feedback is
increased by the Torque Memory Boost Reference Percent. This reference is a
percentage increase. For example, if TrqMemBoostRf_Pct is set to 10%, the Torque
Memory Reference will be 10% more than the Torque Feedback of the drive.
Usage - Connect to the TrqMemBoostRf_Pct tag or set the value of Memory Boost in
the JSR instruction.
4.7.5 TrqMemKnifeBoostEnbl
When this tag is enabled, the Torque Memory Reference is increased by
TrqMemKnifeBoostRf_Pct.
Usage - Use this bit when an increase in the Torque Memory is needed. For
example, when the knife is firing to sever the web.
4.7.6 TrqMemKnifeBoostRf_Pct
When the Knife Torque Memory Boost is enabled, the captured Torque Feedback is
increased by the Knife Torque Memory Boost Reference Percent. This reference is a
percentage increase. For example, if TrqMemKnifeBoostRf_Pct is set to 10%, the
Torque Memory Reference will be 10% more than the Torque Feedback of the drive.
Usage - Connect to the TrqMemKnifeBoostRf_Pct tag or set the value of Memory
Boost in the JSR instruction.