Control Techniques unidrive sp Advanced User's Manual page 201

Parameter Keypad and
Menu 12
structure display
Open-loop
Figure 5-19 Open-loop brake function
Current
magnitude
4.01
Upper current
threshold
12.42
12.43
Lower current
threshold
Output
frequency
5.01
Brake release
frequency
12.44
Brake apply
frequency
12.45
Reference
on
1.11
Figure 5-20 Open-loop brake sequence
Pr 12.44 Brake release frequency
Pr 12.42 Upper current threshold
1 2 3
Pr 12.46 Pr 12.47
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
200
Parameter Parameter Advanced parameter
x.00 description format
+
Drive
active
_
10.02
+
i
_
LAT
r
+
_
Pr 12.45
4
6.01 =1,2 or 3)
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Serial comms
Macros
descriptions protocol
Input
X
X
terminals
X
Output
X
terminals
o
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
Relay source
8.27
T25 digital I/O 12
8.32
output select
Brake apply frequency
Pr 5.01 Output frequency
Pr 4.01 Current magnitude
Pr 10.02
Pr 1.11 Reference on
Pr 12.40
Pr 2.03 Ramp hold
5 6
Electronic
Performance
nameplate
Key
Read-write (RW)
0.XX
parameter
Read-only (RO)
0.XX
parameter
Post-brake
release
delay
12.47
2
3
12.46
Pre-brake
release
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.
Drive active
Brake release
Unidrive SP Advanced User Guide
Issue Number: 7
Feature look-
up table
Ramp
hold
2.03
12.40
Brake
release