Digitax ST User Guide
149
Issue Number: 5
Figure 12-13 Brake function
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
3.02
Speed
feedback
Brake apply
speed
12.45
+
_
Post-brake
release delay
0.XX
0.XX
Key
Read-write (RW)
parameter
Read-only (RO)
parameter
Input
terminals
Output
terminals
LAT
input
reset
output
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.
i
r
o
1.11
Reference
on
OR
Brake apply
speed delay
12.46
10.02
Drive active
12.47
12.40
Brake
release
2.03
6.08
Hold zero
speed
Ramp
hold
Brake
controller
enable
12.41
8.12
8.17
8.22
8.27
8.32
T25 digital
I/O 2 invert
Relay source
invert
T25 digital I/O 2
source / destination
Relay source
T25 digital I/O 2
output select
12.48
Brake apply
delay
Enable position
controller during
brake release
12.49
13.10
Position
control
mode
( = 1)
Summary of Contents for Digitax ST
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