Back-Up Option Mcb 107 (Option D) - Danfoss FC 102 Design Manual

Selection
1 2 3
3 3
2
1 2 3
3
1 2
2
Illustration 3.9 Connection
1 NC
2 Live part
3 PELV
Table 3.6 Legend to Illustration 3.9
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 Back-Up 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 fieldbusses without mains
supplied to the power section.
56
1 1 1
4 5 6 7 8 9
2
1 1 1
4 5 6 7 8 9
3
1 1 1
3 4 5 6 7 8 9
2
Danfoss A/S © Rev. 06/2014 All rights reserved.
Design Guide
Input voltage range
10 11 12
Max. input current
Average input current for the
frequency converter
Max cable length
3
Input capacitance load
Power-up delay
Table 3.7 External 24 V DC Supply Specification
10 11 12
The inputs are protected.
3
Terminal numbers:
10 11 12
Follow these steps:
1.
2.
2
3.
4.
5.
6.
When , 24 V back-up option MCB 107 supplies the control
circuit, the internal 24 V supply is automatically discon-
nected.
Illustration 3.10 Connection to 24 V Back-up Supplier (A2-A3).
24 V DC ±15% (max. 37 V
in 10 s)
2.2 A
0.9 A
75 m
<10 uF
<0.6 s
Terminal 35: - external 24 V DC supply.
Terminal 36: + external 24 V DC supply.
Remove the LCP or blind cover.
Remove the terminal cover.
Remove the cable de-coupling plate and the
plastic cover underneath.
Insert the 24 V DC back-up external supply
option in the option slot.
Mount the cable de-coupling plate.
Attach the terminal cover and the LCP or blind
cover.
MG11BC02