Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - ForGe Control - Manual (Page 202)

202 Rockwell Automation Publication 7000-UM202B-EN-P - June 2014
Appendix G Encoder Use and Torque Capabilities
• When cable lengths exceed 305 m (1000 ft) for the Northstar or 610 m
(2000 ft) for the Avtron, consult the factory.
Table 14 - Encoder Selection
PowerFlex 7000 Drive
Performance (Torque
Capabilities) The PowerFlex 7000 drives have been tested on a dynamometer to verify
performance under locked rotor, accelerating, and low speed-high torque
conditions.
Table 15 shows the PowerFlex 7000 drive torque capabilities as a
percent of motor rated torque, independent of the drive’s momentary overload
conditions.
Table 15 - PowerFlex 7000 Drive Torque Capabilities
High Performance
Torque Control (HPTC)
Mode Motor RPM Minimum Tach PPR Recommended Tach PPR
3600 1024 1024
3000 1024 1024
1800 1024 2048
1500 1024 2048
1200 2048 2048
1000 2048 2048
900 2048 4096
720 4096 4096
600 4096 4096
450 4096 8192
360 8192 8192
300 8192 8192
Standard Control Mode 3600 — 600
3000 — 600
1800 — 1024
1500 — 1024
1200 — 2048
1000 — 2048
900 — 2048
720 — 2048
600 — 2048
Parameter 7000 Torque Capability
without Encoder (% of
Motor Rated Torque) 7000 Torque Capability
with Encoder (% of
Motor Rated Torque) 7000 Torque Capability with
Encoder and High Performance
Torque Control (HPTC)
Breakaway Torque 90% 150% 150%
Accelerating Torque
90% (0...8 Hz) 140% (0...8 Hz)
150% (0...75 Hz)
125% (9...75 Hz) 140% (9...75 Hz)
Steady State Torque 125% (9...75 Hz)
(1)
100% (1...2 Hz)
150% (0...60 Hz)
(1)
140% (3...60 Hz) (1)
(1) Drive will require over-sizing to achieve greater than 100% continuous torque.
Max. Torque Limit 150% 150% 150%