Mechanical Brake Control; Encoder Connection - Danfoss VLT AutomationDrive FC 300 Design Manual

Application Examples
8 8
Table 8.13 Using SLC to Set a Relay

8.10 Mechanical Brake Control

FC
+24 V 12
+24 V 13
D IN 18
D IN 19
COM 20
D IN 27
D IN 29
D IN 32
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 8.14 Mechanical Brake Control
246
Design Guide
Parameters
Notes/Comments:
If the limit in the feedback
monitor is exceeded,
Warning 90 is issued. The
SLC monitors Warning 90
and if Warning 90 becomes
TRUE, then Relay 1 is
triggered.
External equipment may
require service. If the
feedback error goes below
the limit again within 5 sec
then the adjustable
frequency drive continues
and the warning
disappears. Press [Reset] on
the LCP to reset Relay 1.
Parameters
Function Setting
5-40 Function [32] Mech.
Relay brake ctrl.
5-10 Terminal 18 [8] Start*
Digital Input
5-11 Terminal 19 [11] Start
Digital Input reversing
1-71 Start Delay 0.2
1-72 Start plus
[5] VVC /
Function
FLUX
Clockwise
1-76 Start Im,n
Current
2-20 Release App.
Brake Current dependent
2-21 Activate Half of
Brake Speed nominal slip
[RPM] of the motor
*=Default Value
Notes/Comments:
Danfoss A/S © Rev. 2014-02-10 All rights reserved.
1-76
Current
Speed
1-71
Start (18)
Start
reversing (19)
Relay output
Open
Closed
Figure 8.4 Mechanical Brake Control

8.11 Encoder Connection

Before setting up the encoder, the basic settings for a
closed-loop speed control system is shown.
See also chapter 9.3 Encoder Option MCB 102.
Figure 8.5 Encoder Connection to the Adjustable Frequency
Drive
A
B
A
B
Figure 8.6 24 V Incremental Encoder. Maximum Cable Length
5 m
Time
2-21 1-71
2-21
CW
CCW
MG34S222