Danfoss VLT Training Manual page 41

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VLT Installation

5) Wiring

5) Wiring the Drive

f. Control Wiring

In its default state, the way it comes from the factory, a jumper or a connection is

required for operation. It must be connected between terminals 12 (24Vdc) and 27

(Digital Input), which defaults to a "coasting stop inverse" command. If terminal 27

does not see 24Vdc, the drive is not enabled and it does not operate. A display on

the front of the drive gives a clear indication when this occurs. After pressing the

"Display/ Status" key, the bottom line reads, "UNIT READY" or "UN. READY". When

ever this display is seen, a connection between terminals 12 and 27 is missing.

Once this connection is made, the bottom line changes to read, "STANDBY".

More details concerning Control wiring is presented in the next training modules.

Rev.02

f. Control Wiring

Control Wiring, Digital Inputs, 12-27 Enable

• Jumper terminal 12 (+24Vdc) to terminal 27 (enable

command)

• Without jumper, bottom line of the display reads, "UNIT

READY", or "UN. READY" and it does not operate the

motor. When this jumper is made, the bottom line

reads, "STANDBY".

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North America

Motion Controls

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