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Application Examples
17.10 Mechanical Brake Control
FC
+24 V
12
+24 V
13
D IN
18
D IN
19
COM
20
D IN
27
D IN
29
32
D IN
D IN
33
D IN
37
+10 V
50
A IN
53
A IN
54
COM
55
A OUT
42
COM
39
01
02
03
04
05
06
Table 17.14 Mechanical Brake Control
1-76
Current
Speed
1-71
Start (18)
Start
reversing (19)
Relay output
Open
Closed
Illustration 17.4 Mechanical Brake Control
MG37N102
Design Guide
Parameters
Function
Setting
Parameter 5-40 F
[32] Mech.
unction Relay
brake ctrl.
Parameter 5-10 T
[8] Start*
erminal 18
Digital Input
Parameter 5-11 T
[11] Start
erminal 19
reversing
Digital Input
Parameter 1-71 S
0.2
tart Delay
Parameter 1-72 S
[5] VVC+/
tart Function
FLUX
Clockwise
Parameter 1-76 S
Im,n
tart Current
Parameter 2-20 R
App.
elease Brake
dependent
Current
Parameter 2-21 A
Half of
ctivate Brake
nominal slip
Speed [RPM]
of the motor
*=Default value
Notes/comments:
Time
2-21
1-71
2-21
Danfoss A/S © 6/2016 All rights reserved.
17.11 Encoder Connection
Before setting up the encoder, the basic settings for a
closed-loop speed control system are shown.
®
See also chapter 7.3.6 VLT
Encoder Input MCB 102.
12
13
18
19
27
24 V or 10–30 V encoder
Illustration 17.5 Encoder Connection to the Frequency
Converter
A
B
A
B
Illustration 17.6 24 V Incremental Encoder. Maximum Cable
Length 5 m (16 ft)
17.12 Encoder Direction
The direction of the encoder, identified by looking into the
shaft end, is determined by which order the pulses enter
the frequency converter.
•
Clockwise (CW) direction means channel A is 90
electrical degrees before channel B.
•
Counterclockwise (CCW) direction means channel
B is 90 electrical degrees before A.
29
32
33
20
37
CW
CCW
157
17
17
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