Specifications

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130BA176.11

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.

Input voltage range

24 V DC ±15% (max. 37 V

in 10 s)

Max. input current 2.2 A

Average input current for the

frequency converter

0.9 A

Max cable length 75 m

Input capacitance load

<10 uF

Power-up delay

<0.6 s

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 de-coupling plate and the

plastic cover underneath.

4. Insert the 24 V DC back-up 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.

When , 24 V back-up option MCB 107 supplies the control

circuit, the internal 24 V supply is automatically discon-

nected.

130BA028.11

Illustration 3.10 Connection to 24 V Back-up Supplier (A2-A3).

Selection Design Guide