Danfoss VLT 6000 HVAC Manual de servicio descargar pdf (Pagina 67)

VLT

6000 HVAC

67MG.60.B1.02 - VLT is a registered Danfoss trade mark

Installation

■■

■ Switches 1-4

The dipswitch is located on the control card.

It is used for serial communication and external DC

supply.

The switching position shown is the factory setting.

Switch 1 has no function.

Switches 2 and 3 are used for terminating an RS 485

interface, serial communication. In the first and the

last VLT frequency converter, switches 2 and 3 must

be ON. In the other VLT frequency converters,

switches 2 and 3 must be OFF.

Switch 4 is used if an external 24 V DC supply is

required for the control terminals.

Switch 4 separates the common potential for the

internal 24 V DC supply from the common potential of

the external 24 V DC supply.

NB!

Please note that when Switch 4 is in position

"OFF", the external 24 V DC supply is

galvanically isolated from the VLT frequency converter.

■■

■ Electrical installation, control cables

Torque: 0.5-0.6 Nm

Screw size: M3

See page 56 for correct termination of control cables.

No. Function

Relay output 1 can be used for

indicating status and warnings.

Voltage supply to digital inputs. For the

24 V DC to be used for digital inputs,

switch 4 on the control card must be

closed, position "on".

Digital inputs. See parameters 300-307

Digital inputs.

Common for digital inputs.

Common for analogue/digital outputs.

Must be connnected to terminal 55 by

means of a three-wire transmitter. See

Examples of connection.

Analogue/digital outputs for indicating

frequency, reference, current and torque.

See parameters 319-322 Analogue/

digital outputs.

Supply voltage to potentiometer and

thermistor 10 V DC.

Analogue voltage input, 0 - 10 V DC.

Common for analogue voltage inputs.

68, 69

No. Function

Analogue current input 0/4-20 mA.

See parameters 314-316 Terminal 60.

Termination of serial communication.

See page 56.

This terminal is not normally to be used.

RS 485 interface, serial communication.

Where the VLT frequency converter is

connected to a bus, switches 2 and 3

(switches 1- 4 - see next page) must be

closed on the first and the last VLT

frequency converter. On the remaining

VLT frequency converters, switches 2

and 3 must be open. The factory setting

is closed (position on).

12, 13

16-33

42, 45

53, 54

04, 05

1 2 ... 62 63 64 65 66 67 68 69 70 71 72 ... 176 177

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Danfoss VLT 6000 HVAC Manual de servicio Pagina 67

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