Figure 11-13 Brake Function - Emerson Digitax ST 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 Smartcard in boot mode or an SM-Applications module can ensure drive parameters are immediately programmed to avoid this situation.
WARNING

Figure 11-13 Brake function

Drive active
10.02
Reference
on
1.11
Speed
feedback
3.02
Brake apply
speed
12.45
Digitax ST User Guide
Issue Number: 3
Electrical Getting Basic
installation started parameters
OR
Brake apply
12.46
speed delay
+
_
Key
Input
terminals
Output
terminals
www.controltechniques.com
Running the SMARTCARD
Optimization
motor Operation
Post-brake
release delay
Brake
controller
12.41
enable
T25 digital
8.12
I/O 2 invert
Relay source
8.17
invert
T25 digital I/O 2
8.22
source / destination
8.27 Relay source
T25 digital I/O 2
8.32
output select
Read-write (RW)
0.XX
parameter
Read-only (RO)
0.XX
parameter
Onboard Advanced
Technical
PLC parameters
Data
Enable position
controller during
brake release
12.49
12.47
Brake apply
12.48
delay
input output
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.
UL listing
Diagnostics
information
Position
control
13.10
mode
( = 1)
Ramp
2.03
hold
Brake
12.40
release
Hold zero
6.08
speed
117