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5.10 Emergency Run Operation
In normal operation the MCD 500 is controlled via a remote two wire signal (terminals 17, 18).
Emergency Run is controlled by a two wire circuit connected to Input A (terminals 11, 16). Closing Input A causes the MCD
500 to run the motor and ignore all trip conditions.
KM1
F1
24
VDC
22
21
6/T3
2/T1
13
14
4/T2
24
33
34
06
05
08
07
17
18
25
11
16
A6
A5
A4
5/L3
3/L2
15
S3
S1
S2
E
1/L1
+
+
5
6
7
4
2
A
3
1
1
7
7
H
A
5
2
4
.1
0
Illustration 5.12
1
Control voltage (model dependent)
S1
Start/stop contact
2
24 VDC output
S2
Reset contact
3
Remote control inputs
S3
Emergency Run contact
4
Motor thermistor input (PTC only)
13, 14
Relay output A
5
Relay outputs
21, 22, 24
Relay output B
6
3-phase supply
33, 34
Relay output C
7
Motor terminals
Table 5.13
Parameter settings:
•
3-3 Input A Function
•
Select Emergency Run - assigns Input A to Emergency Run Function
•
15-3 Emergency Run
•
Select Enable - Enables the Emergency Run mode
Application Examples
MCD 500 Operating Instruction
40
MG17K402 - VLT
®
is a registered Danfoss trademark
5
5