Application Notes C-5
Installation/Wiring
When [TorqProve Cnfg] is set to “Enable,” the Digital Out 1 relay is
used to control the external brake contactor. The normally open (N.O.)
contact, when closed, is intended to energize the contactor. This provides
the mechanical brake with voltage, causing the brake to release. Any
interruption of power to the contactor will set the mechanical brake.
Programming [Digital Out1 Sel], parameter 380 will be ignored when
[TorqProve Cnfg] is set to “Enable.”
Figure C.2 Typical Torque Proving Configuration
Lifting/Torque Proving Application Programming
The PowerFlex 700 lifting application is mainly influenced by
parameters 600 through 611 in the Torque Proving group of the
Application file. Figure C.3
and the paragraphs that follow describe
programming.
Figure C.3 Torque Proving Flow Diagram
24
25
26
27
28
29
30
31
32
Run Fwd
Run Rev
Clear Faults
Float/Micro
Fast Stop
Enable
12
13
115V AC
Brake
Contactor
Brake Set
Normally Open
= Brake Set
24V configuration shown,
see page 1-21 for other examples
.
Torque
Prove Initiated
Brake
Released
Float
Initiated
Brake
Set
Brake
Slip Test
Run
Command
Run
Command Released
Drive Running
Run can be initiated anytime
All times between Drive Actions are programmable and can be made very small
(i.e. Brake Release Time can be 0.1 seconds)
[ZeroSpdFloatTime]
Parameter 605
[Brk Release Time]
Parameter 604
[Brk Set Time]
Parameter 607
Operator
Commands
Time
Drive
Actions
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