Auxiliary Trip Circuit - Danfoss vlt soft starter mcd 500 Operating Manual

Product Features
NOTICE
Although Emergency run fulfills the functionality requirements of Fire mode, Danfoss does not recommend its use in
situations that require testing and/or compliance with specific standards as it is not certified.

5.11 Auxiliary Trip Circuit

In normal operation, the VLT
Input A (terminals 11, 16) is connected to an external trip circuit (such as a low-pressure alarm switch for a pumping
system). When the external circuit activates, the soft starter trips and stops the motor.
5 5
1 Control voltage (model dependent)
2 24 V DC output
3 Remote control inputs
4 Motor thermistor input (PTC only)
5 Relay outputs
6 3-phase supply
7 Motor terminals
Illustration 5.13 Auxiliary Trip Circuit
Parameter settings:
•
Parameter 3-3 Input A Function.
-
•
Parameter 3-4 Input A Name.
46
®
VLT
®
Soft Starter MCD 500 is controlled via a remote 2-wire signal (terminals 17, 18).
K1 F
6
A
S3
S1
S2
Select Input Trip (N/O) - assigns input A to auxiliary trip (N/O) function.
Danfoss A/S © 05/2016 All rights reserved.
Soft Starter MCD 500
1/L1 2/T1
3/L2
4/T2
5/L3 6/T3
E
A4
13
A5 14
1
21
A6
22
5
07
+
24
08
2
24
33
VD
11
34
16 +
15
17
3
18
25
05
4
06
S1 Start/stop contact
S2 Reset contact
S3 Auxiliary trip contact
13, 14 Relay output A
21, 22, 24 Relay output B
33, 34 Relay output C
7
MG17K602