Danfoss VLT 5000 Series Manuale - Pagina 7

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Supply voltages:

The option card is supplied by the internal 24 V DC

supply of VLT 5000, but as the available power is

limited it can be necessary to use an external 24 V

DC supply.

The 24 V DC supply of VLT 5000 can supply a total

of 420 mA including the load on the control card

(terminal 12, 13 and output 42 and 45).

The 5 V output on the option card is generated from

the 24 V supply. The maximum power on the 5 V

side is 5 V * 280 mA = 1.4 W, this corresponds to

app. 60 mA on the 24 V side.

When an external 24 V DC voltage source is used

the internal 24 V supply from the control card must

be disconnected, this is done by opening switch 1.1

and 1.5.

MD.50.B2.02 – VLT is a registered Danfoss trade mark

VLT

5000 SyncPos option

Each digital input on the option card takes 8 mA.

Each digital output on the option card can supply up

to 0.7 A (external 24V-supply) depending on the

load.

The load from the 24 V supply (internal or external)

can be calculated as follows:

8 mA * number of digital inputs

Load on digital outputs

(mk3 C, O1 – O8)

load on 5 V supply

(mk3 B/D, 5 V/com)

Load on control card

(24 V supply, terminal 12/13 and

outputs, terminal 42/45)