Rfc-A Mode (Brake Controller (12.052) = 0) And Rfc-S Mode - Emerson Unidrive M702 User Manual

Safety Product Mechanical
information information installation
The brake control functions are provided to allow well co-ordinated operation of an external brake with the drive. While both hardware and
software are designed to high standards of quality and robustness, they are not intended for use as safety functions, i.e. where a fault or
failure would result in a risk of injury. In any application where the incorrect operation of the brake release mechanism could result in injury,
independent protection devices of proven integrity must also be incorporated.
WARNING
The control terminal relay can be selected as an output to release a brake. If a drive is set up in this manner and a drive replacement takes
place, prior to programming the drive on initial power up, the brake may be released.
When drive terminals are programmed to non default settings the result of incorrect or delayed programming must be considered. The use of
a NV media card in boot mode or an SI-Applications module can ensure drive parameters are immediately programmed to avoid this situation.
WARNING
Figure 11-30 RFC-A mode (brake controller (12.052) = 0) and RFC-S mode
Percentage
Flux
05.034
90%
Current
Magnitude
04.001
12.043
Brake Control:
Lower Current
Threshold
10.002
Reference
On
Drive Active
01.011
Speed
Feedback
03.002
Brake Control:
Brake Apply Speed
12.045
200
Electrical Getting Basic
installation started parameters
+
_
o
i
_
LAT
OR
r
+
x(-1)
Brake Apply
Speed Delay 12.046
+
_
X
X
X
X
The parameters are all shown in their default settings
Running NV Media Card
Optimization
the motor Operation
Brake Control:
Enable Position
Controller During
Brake Release
Post-Brake
Release Delay 12.047
12.041
Brake Control:
Enable
OR
Key
Input
Read-write (RW)
mm.ppp
terminals
parameter
Read-only (RO)
mm.ppp
Output
parameter
terminals
Onboard Advanced Technical
PLC parameters data
13.010
12.049
02.003
12.040
Brake Apply
12.048
Delay
06.008
input
i o
LAT
reset
r
If the reset input is 1, the output is 0.
If the reset input is 0, the output latches
at 1 if the input is 1.
Unidrive M702 User Guide
UL listing
Diagnostics
information
Position
Control
Mode
( = 1)
Ramp
Hold
Brake Control:
Brake Release
Hold Zero
Speed
output
Issue Number: 3