Danfoss VLT 6000 HVAC Manual de servicio descargar pdf (Pagina 27)

VLT

6000 HVAC

27MG.60.B1.02 - VLT is a registered Danfoss trademark

Introduction to

HVAC

2.06 Control

A. Hand/Off/Auto selector switches shall be provided

on the keypad to start and stop the frequency

converter. It must be possible to select local and

remote reference independant of Hand/Off/Auto.

The local speed reference must be adjustable from

the keypad.

B. Digital manual speed control. Potentiometers are

not acceptable.

C. Provide a 24 V DC, 40 mA max, output signal to

indicate that the frequency converter is in Auto

mode.

D. Lockable, alphanumeric backlit display keypad can

be remotely mounted up to 3 meters away.

E. It must be possible to read 4 operating

parameters on the display at the same time.

F. It shall be possible to upload the frequency

converter settings in the keypad, to allow

programming of other drives through

downloading of parameters. Upload/download

must be possible between any frequency

converter size.

G. Frequency converters up to 200 kW shall use the

same control panel.

H. Displays shall be available in 9 languages

including English, Spanish, German and French.

I. A red FAULT light, a yellow WARNING light and a

green POWER-ON light shall be provided.

J. A Quick Setup menu with preset parameters shall

be provided for easy pre-commissioning.

K. It must be possible to connect an external key-

lock to the frequency converter, to prevent

unauthorised programming.

L. The frequency converter shall be equipped with a

RS 485 serial communication port and be

supplied with software to display all monitoring,

fault, alarm and status signals. The software shall

allow parameter changes to be made to the

frequency converter settings as well as storage of

each controller's operating and Setup parameters.

The protocol must be selectable. Choices must

include Danfoss FC protocol, Johnson Controls

Metasys N2, Landis-Staefa FLN.

M. A LonMark certified option must be available for

the frequency converter, to secure easy

implementation in a LonWorks network.

N. It must be possible to program a text string in the

frequency converter display.

O. PID controller shall be standard in the unit.

Programming must be done in process units

(including: Pa, MPa, mbar, inWG, ftWG, m

/h, m

s, GPM, CFM, °C and °F).

P. It shall be possible to program a feedback

conversion, such that the frequency converter

interprets a pressure as a flow. This must be

accomplished by a automatic conversion of the

squared pressure signal into a linear flow signal.

Q. A low pass filter must be supplied with the PID

controller.

R. The PID controller shall be able to accept two

feedback signals and two setpoints. Response to

the setpoint/feedback differences must be

programable.

S. It must be possible to increase/decrease speed in

response to digital signals.

T. An elapsed time meter and kWh meter shall be

provided.

U. The following displays shall be accessible from the

control panel in actual units: Local and Remote

Reference Signal Percent, Output Frequency,

Output Amps, Motor HP, Motor kW, kWh, Output

Voltage, No Load Warning, DC Bus Voltage,

frequency converter Temperature (in °C) and

Motor Speed in engineering units per application

(in percent speed, RPM).

L. Autoderating of the maximum drive current shall

be incorporated in the frequency converter, to

allow continued operation at reduced speed, in

case of an overtemperature, phase loss or mains

imbalance, without damaging the frequency

converter.

M. Full galvanic isolation with suitable potential

separation from the power sources to ensure

compliance with the PELV requirements of

EN 50178.

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 176 177

Comentarios a estos manuales

Sin comentarios

Danfoss VLT 6000 HVAC Manual de servicio Pagina 27

Comentarios a estos manuales

Relacionado con productos y manuales para Adaptadores E Inversores De Energía Danfoss VLT 6000 HVAC