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
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UL Listing
Information
202 Unidrive SPM User Guide
www.controltechniques.com Issue Number: 3
Figure 13-17 Open-loop brake function
Figure 13-18 Open-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.
4.01
Current
magnitude
Upper current
threshold
Lower current
threshold
12.42
12.43
+
_
5.01
Output
frequency
Brake release
frequency
Brake apply
frequency
12.44
12.45
+
_
+
_
1.11
Reference
on
LAT
10.02
Drive
active
Post-brake
release
delay
12.47
Pre-brake
release
delay
12.46
12.40
Brake
release
Ramp
hold
2.03
Brake
controller
enable
12.41
0.XX
0.XX
Key
Read-write (RW)
parameter
Read-only (RO)
parameter
Input
terminals
Output
terminals
X
X
X
X
i
o
r
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
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 12
output select
12
3
465
Pr Output frequency
5.01
Pr Reference on
1.11
Pr Brake release
12.40
Pr Ramp hold
2.03
Pr Drive active
10.02
Pr Current magnitude
4.01
1. Wait for upper current threshold and brake release frequency
2. Pre-brake release delay
3. Post-brake release delay
4. Wait for brake apply frequency
5. Wait for zero frequency
6. 1s delay as phase 2 of stopping sequence (Pr =1,2 or 3)
6.01
Pr Brake release frequency
12.44
Pr Brake apply frequency
12.45
Pr
12.46
Pr
12.47
Pr Upper current threshold
12.42