Backup Option Mcb 107 (Option D) - Danfoss VLT FC 102 Series Design Manual

Selection
Relay 7 Relay 8
NC
1 2 3 4 5 6
Figure 3.7 Relay 7, Relay 8, and Relay 9
Figure 3.8 Mounting
1
1 2 3 4 5 6
2 2
1
1 2 3 4 5 6
3 3
1
1 2 3 4 5 6
2 2
Figure 3.9 Connection
1 NC
2 Live part
3 PELV
Table 3.6 Legend to Figure 3.9
MG11BC22
Design Guide
Relay 9
NC NC
7 8 9 10 11 12
1 1
7 8 9 10 11 12
3
1 1
7 8 9 10 11 12
3
1 1
7 8 9 10 11 12
2
Danfoss A/S © Rev. 06/2014 All rights reserved.
WARNING
Do not combine low voltage parts and PELV systems.
At a single fault the whole system might become
dangerous to touch, and it could result in death or
serious injury.
3.1.8 24 V Backup Option MCB 107 (Option
D)
External 24 V DC Supply
An external 24 V DC supply can be installed for low-
voltage supply to the control card and any option card
installed. This enables full operation of the LCP (including
the parameter setting) and serial communication busses
without line power supplied to the power section.
24 V DC ±15% (max. 37 V in 10 s)
Input voltage range
Max. input current 2.2 A
Average input current for 0.9 A
the adjustable frequency
drive
Max cable length 250 ft [75 m]
<10 uF
Input capacitance load
<0.6 s
Power-up delay
Table 3.7 External 24 V DC Supply Specification
The inputs are protected.
Terminal numbers:
Terminal 35: - external 24 V DC supply.
Terminal 36: + external 24 V DC supply.
Follow these steps:
1. Remove the LCP or blind cover.
2. Remove the terminal cover.
3. Remove the cable decoupling plate and the
plastic cover underneath.
4. Insert the 24 V DC backup external supply option
in the option slot.
5. Mount the cable de-coupling plate.
6. Attach the terminal cover and the LCP or blind
cover.
3 3
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