Extreme Running Conditions - Danfoss VLT AutomationDrive FC 300 Design Manual

Product Introduction
Logic rules
Combine up to three Boolean (TRUE/FALSE) inputs from
timers, comparators, digital inputs, status bits and events
using the logical operators AND, OR, and NOT.
3 3
Par. 13-40
Logic Rule Boolean 1
Par. 13-42
Logic Rule Boolean 2
Figure 3.38 Logic Rules
Application example
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
60
Design Guide
Par. 13-41 Par. 13-43
Logic Rule Operator 1 Logic Rule Operator 2
. . .
. . .
. . .
. . .
Par. 13-44
Logic Rule Boolean 3
Parameters
Function
4-30 Motor
Feedback Loss
Function
4-31 Motor
Feedback Speed
Error
4-32 Motor
Feedback Loss
Timeout
7-00 Speed PID
Feedback Source
17-11 Resolution
(PPR)
13-00 SL
Controller Mode
13-01 Start Event [19]
13-02 Stop Event [44]
13-10 Comparator
Operand
13-11 Comparator
Operator
13-12 Comparator
Value
13-51 SL
Controller Event
Danfoss A/S © Rev. 2014-02-10 All rights reserved.
Setting
[1]
Warning
100 RPM
Table 3.20 Using SLC to Set a Relay
5 s

3.11 Extreme Running Conditions

[2] MCB
Short Circuit (Motor Phase – Phase)
102
The adjustable frequency drive is protected against short
1024*
circuits by means of current measurement in each of the
three motor phases or in the DC link. A short circuit
[1] On
between two output phases causes an overcurrent in the
inverter. The inverter turns off individually when the short
circuit current exceeds the permitted value (Alarm 16 Trip
Warning
Lock).
To protect the adjustable frequency drive against a short
Reset key
circuit at the load sharing and brake outputs, see
[21] Application Note for FC 100, FC 200 and FC 300 Fuses and
Warning
Circuit Breakers.
no.
See certificate in .
[1] ≈*
Switching on the Output
Switching on the output between the motor and the
90
adjustable frequency drive is fully permitted. Switching on
the output does not damage the adjustable frequency
[22]
drive, but fault messages may appear.
Comparat
or 0
Parameters
Function Setting
13-52 SL [32] Set
Controller Action digital out
A low
5-40 Function [80] SL
Relay digital
output A
Notes/Comments:
If the limit in the feedback
monitor is exceeded, Warning
90 will be issued. The SLC
monitors Warning 90 and if
Warning 90 becomes TRUE,
then Relay 1 is triggered.
External equipment may then
indicate that service may be
required. If the feedback
error goes below the limit
again within 5 s, the drive
continues and the warning
disappears. But Relay 1 will
still be triggered until [Reset]
on the LCP.
MG34S222