C-4
Application Notes
The TorqProve™ feature of the PowerFlex 700 is intended for
applications where proper coordination between motor control and a
mechanical brake is required. Prior to releasing a mechanical brake, the
drive will check motor output phase continuity and verify proper motor
control (torque proving). The drive will also verify that the mechanical
brake has control of the load prior to releasing drive control (brake
proving). After the drive sets the brake, motor movement is monitored to
ensure the brakes ability to hold the load. TorqProve can be operated
with an encoder or encoderless.
TorqProve functionality with an encoder includes:
•
Torque Proving (includes flux up and last torque measurement)
•
Brake Proving
•
Brake Slip (feature slowly lowers load if brake slips/fails)
•
Float Capability (ability to hold full torque at zero speed)
•
Micro-Positioning
•
Fast Stop
•
Speed Deviation Fault, Output Phase Loss Fault, Encoder Loss Fault.
Encoderless TorqProve functionality includes:
•
Torque Proving (includes flux up and last torque measurement)
•
Brake Proving
•
Micro-Positioning
•
Fast Stop
•
Speed Deviation Fault, Output Phase Loss Fault.
Important:
Brake Slip detection and Float capability (ability to hold
load at zero speed) are not available in encoderless
TorqProve
Lifting/Torque Proving
!
ATTENTION:
Loss of control in suspended load applications can
cause personal injury and/or equipment damage. Loads must always be
controlled by the drive or a mechanical brake. Parameters 600-612 are
designed for lifting/torque proving applications. It is the responsibility
of the engineer and/or end user to configure drive parameters, test any
lifting functionality and meet safety requirements in accordance with
all applicable codes and standards.
Summary of Contents for Allen-Bradley PowerFlex 700 B Series
Page 10: ...P 6 Overview Notes ...
Page 36: ...1 26 Installation Wiring Notes ...
Page 118: ...3 78 Programming and Parameters Notes ...
Page 162: ...A 28 Supplemental Drive Information Notes ...
Page 227: ......