Danfoss VLT 28 Bedienungsanleitung

VLT® 2800 Series

■Hig voltage warning

The voltage of the adjusta le frequency

drive is dangerous whenever the drive is

connected to electrical current. Incorrect

fitting of the motor or adjusta le frequency drive may

cause damage to the equipment, serious injury or

death. Consequently, it is essential to comply with

the instructions in this manual as well as local and

national rules and safety regulations.

■T ese rules concern your safety:

1. Disconnect the adjusta le frequency drive from

the AC line if repair work is to e carried out. Wait

4 minutes to allow for electrical discharge efore

removing motor and AC line connectors.

2. The [STOP/RESET] key on the control panel

of the adjusta le frequency drive does not

disconnect the equipment from the AC line.

Do not use it as a safety switch.

3. The unit must e grounded correctly. The user

must e protected against supply voltage and the

motor protected against overload in accordance

with applica le national and local regulations.

4. The ground leakage currents are higher than 3.5 mA.

5. Protection against motor overload is not included in

the factory setting. If this function is required, set

parameter 128 Motor thermal protection to ETR

trip or ETR warning. For North America: The ETR

functions provide class 20 overload protection for

the motor, in accordance with NEC requirements.

6. Do not remove the terminal plugs for the motor

and AC line supply while the adjusta le frequency

drive is connected to the AC line. Ensure that

the AC line supply has een disconnected and

that 4 minutes has passed efore removing

motor and AC line plugs.

7. The DC us terminals are another high voltage

input that must e disconnected efore servicing

thedrive. Ensurethatallvoltageinputshave

een disconnected and that 4 minutes has

passed efore repair work egins.

■Warnings against unintended start:

1. The motor can e started y means of digital

commands, us commands, references or

a local start command whenever the drive

is connected to the AC line. Therefore, an

unintended start may occur anytime power is

applied. Never service the drive or equipment

when power is applied to the drive.

2. The motor may start while parameters are

eing changed. Always activate the stop key

[STOP/RESET] y pressing it efore data is modified.

3. A motor that has een stopped may start if

faults occur in the electronics of the drive, or

if a temporary overload or fault clears in the

AC line or motor connection.

■Motor overload protection

The electronic thermal relay (ETR) in UL listed

VLTs provides Class 20 motor overload protection

in accordance with the NEC in single motor

applications when parameter 128 is set for "ETR

TRIP" and parameter 105 Motor current is set

for the rated motor current.

195NA139.10

Warning:

It can e extremely dangerous to touch the electrical parts

even when the mains supply has een disconnected.

Also ensure that other voltage inputs are disconnected

from load sharing through the DC us.

Wait at least 4 minutes after the input power has een

removed efore servicing the drive.

MG.28.A8.22 - VLT is a registered Danfoss trademark

VLT® 2800 Series

Installation

■Mec anical dimensions

The drawings elow give the mechanical dimensions.

All dimensions are in mm.

VLT 2803-2815 200-240 Volt

VLT 2805-2815 380-480 Volt

The drawing elow gives the mechanical dimensions of

VLT 2822 (3 HP) 200-240 Volts and VLT 2822-2840 (3

- 5 HP) 380-480 Volts. All dimensions are in inches.

VLT 2822 200-240 Volt

VLT 2822-2840 380-480 Volt

The drawing elow gives the mechanical dimensions of

VLT 2840 (5 HP) 200-240 Volt and VLT 2855-2875 (7 -

10HP) 380-480 Volt. All dimensions are in inches.

VLT 2840 200-240 Volt

VLT 2855-2875 380-480 Volt

VLT 2880-82 380-480V

MG.28.A8.22 - VLT is a registered Danfoss trademark 5

VLT® 2800 Series

■Motor coils (195N3110)

■RFI 1B filter (195N3103)

■Terminal cover

The drawing elow gives the dimensions for NEMA

1 terminal covers for VLT 2803-2875.

Dimension ’a’depends on the unit type.

■IP 21 solution

MG.28.A8.22 - VLT is a registered Danfoss trademark

VLT® 2800 Series

Installation

Dimensions

Typ e Code num er A B C

VLT 2803-2815 200-240 V, VLT 2805-2815 380-480 V 195N2118 47 80 170

VLT 2822 200-240 V, VLT 2822-2840 380-480 V 195N2119 47 95 170

VLT 2840 200-240 V, VLT 2855-2875 380-480 V 195N2120 47 145 170

VLT 2880-2882 380-480 V 195N2126 47 205 245

■EMC filter for long motor cables

192H4719

MG.28.A8.22 - VLT is a registered Danfoss trademark 7

VLT® 2800 Series

192H4720

192H4893

MG.28.A8.22 - VLT is a registered Danfoss trademark

VLT® 2800 Series

Installation

■Mec anical installation

The adjusta le frequency drive is cooled y air

circulation. For proper cooling, allow a minimum

of 4 inches (100 mm) of open space a ove and

elow the unit. To protect the unit from overheating,

ensure that oth the am ient temperature and the

24-hour average temperature are not exceeded.

The maximum temperature and 24-hour average

are listed in General technical data in this manual. If

the am ient temperature is in the range of 113°F -

131°F (45°C - 55°C), derating of the drive must e

carried out. See Derating for ambient temperature

in this manual. The service life of the unit will e

reduced without applica le derating.

The requirements that apply to enclosures

and remote mounting must e complied

with to avoid serious injury or equipment

damage, especially when installing large units.

■Enclosures

In the USA and some other countries, a NEMA 1

terminal cover enclosing terminal connectors is required

if the drive is not installed within another enclosure.

■Spacing for mec anical installation

All units require a minimum of 4 in of air from other

components a ove and elow the enclosure.

■Side-by-side

All VLT 2800 units can e installed side- y-side

and in any position, as the units do not require

ventilation on the side.

NOTE

With the IP 21 solution all units require a

minimum of 4 in air on each side. This means

that side- y-side mounting is not allowed.

MG.28.A8.22 - VLT is a registered Danfoss trademark 9

VLT® 2800 Series

■General information about electrical installation

■Hig voltage warning

The voltage of the adjusta le frequency

drive is dangerous whenever the drive

is connected to the AC line. Incorrect

installation of the motor or drive may cause damage

to the equipment, serious injury or death. Comply

with the safety instructions in this manual as well

as local and national rules and safety regulations.

Touching electrical parts may e fatal - even after the

equipment has een disconnected from the AC line.

Wait at least 4 minutes for current to dissipate.

NOTE

It is the responsi ility of the user or installer

to ensure correct grounding and protection in

accordance with national and local standards.

■Grounding

Comply with the following at installation:

•Safety grounding: The drive has a high leakage

current and must e grounded properly for safety.

Follow all local safety regulations.

•High frequency grounding: Keep grounding

ca les as short as possi le.

Connect all grounds to ensure the lowest possi le

conductor impedance. The lowest possi le conductor

impedance is achieved y keeping the conductor as

short as possi le and y grounding with the greatest

possi le surface area. If multiple drives are installed

in a ca inet, the ca inet ackplate, which must e

made of metal, should e used as a joint ground

referenceplate. Thedrivesmust efittedtothe

ackplate at the lowest possi le impedance.

To achieve low impedance, connect the drive to the

ackplate with the drive fastening olts. Remove

all paint from the contact points.

■Hig voltage test

A high voltage test can e performed y short-circuiting

terminalsU,V,W,L1,L2andL3,andapplying

max. 2160 V DC in 1 sec. etween this

short-circuit and terminal 95.

MG.28.A8.22 - VLT is a registered Danfoss trademark

VLT® 2800 Series

Installation

■EMC-correct electrical installation

General points to e o served to ensure

EMC-correct electrical installation.

- Use only shielded/armoured motor ca les and

shielded/armoured control ca les.

- Connect the screen to ground at oth ends.

- Avoid installation with twisted shield ends (pigtails),

since this ruins the shielding effect at high

frequencies. Use ca le clamps instead.

- It is important to ensure good electrical contact from

the installation plate through the installation screws

to the metal ca inet of the varia le frequency drive.

- Use starwashers and galvanically conductive

installation plates.

- Do not use unshielded/unarmoured motor

ca les in the installation ca inets.

The illustration elow shows EMC-correct electrical

installation, in which the varia le frequency

drive has een fitted in an installation ca inet

and connected to a PLC.

MG.28.A8.22 - VLT is a registered Danfoss trademark 11

VLT® 2800 Series

■Grounding of s ielded/armoured control cables

In general control ca les must e shielded/armoured,

and the shield must e connected to the unit’s metal

ca inet with a ca le clamp at each end.

The drawing elow shows the correct way to perform

the grounding, and what to do when in dou t.

1. Correct grounding

Control ca les and ca les for serial

communication must e attached with ca le

clamps at oth ends to ensure maximum

possi le electrical contact.

2. Incorrect grounding

Do not use twisted shield ends that are

plaited together (pigtails), as these increase shield

impedance at higher frequencies.

3. Protection wit respect to ground

potential between PLC and VLT

f the ground potential etween the VLT

varia le frequency drive and the PLC (etc.)

is different, electric noise may occur that will

distur the whole system. This pro lem can

e solved y fitting an equalising ca le, to e

placed next to the control ca le. Minimum ca le

cross-section: 6 AWG (16 mm2).

4. n t e event of a 50/60 Hz ground loop

If very long control ca les are used, 50/60 Hz

ground loops can arise, and these can interfere

with the whole system. This pro lem is resolved

y attaching one end of the shield to the ground

via a 100 nF capacitor (short pin length).

MG.28.A8.22 - VLT is a registered Danfoss trademark

VLT® 2800 Series

Installation

■Diagram

* Integrated 1A RFI filter and rake is an option.

** VLT 2803-2815 200-240 V is not supplied

with intermediate circuit coils.

MG.28.A8.22 - VLT is a registered Danfoss trademark 13

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