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Safety
Information
Introduction
Product
Information
System
configuration
Mechanical
Installation
Electrical
Installation
Getting
Started
Basic
parameters
Running
the motor
Optimization
SMARTCARD
operation
Onboard
PLC
Advanced
parameters
Technical
Data
Diagnostics
UL Listing
Information
Unidrive SPM User Guide
203
Issue Number: 3 www.controltechniques.com
Figure 13-19 Closed-loop brake function
Figure 13-20 Closed-loop brake sequence
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
4.01
Current
magnitude
Lower current
threshold
12.43
+
_
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
X
X
X
X
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
+
_
Motor flux
7/8 x Rated flux
1.11
Reference
on
LAT
i
o
r
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
2
3
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
1
0
10.02
Drive active
1
Enable position
controller during
brake release
12.49
13.10
Position
control
mode
( = 1)
1
2
3
5
4
Pr
Output frequency
5.01
Pr
Reference
on
1.11
Pr
Brake release
12.40
Pr
Ramp
hold
2.03
Pr
Position control mode
13.10
Pr
Drive active
10.02
Pr
Current
magnitude
4.01
1. Wait for motor fluxed (closed-loop vector only)
2. Post-brake release delay
3. Wait for speed threshold
4. Wait for brake apply speed delay
5. Brake apply delay
Pr
Hold zero speed
6.08
Pr
Brake apply speed
12.45
Pr
12.47
Pr
12.46
Pr
12.48