bw-BU6200_GB.pdf

OPERATING INSTRUCTIONS

NORDAC connect

BU 6200 GB

Getriebebau NORD

GmbH & Co. KG

NORDAC connect Operating Instructions

1 General

NORDAC connect is a device that will switch ON or OFF one phase sequence in motors with ratings between

0.25 and 3.0 kW. Integrated in the terminal box of the motor, it ensures complete motor protection as well. With

NORDAC connect , no extra components need to be provided in the switch cabinet with which to wire up the

drive or to monitor its working. This is what makes NORDAC connect the perfect switchgear for many a drive

which is operated on an autonomous basis, ensuring both effective control and absolute operational safety.

1.1 Instructions for safety and installation

Three-phase motors with a NORDAC connect motor switch are operational equipment for use in industrial

power plant and are operated at voltages which on contact may cause serious injuries or even death.

CAUTION! DANGER!

WARNING

THESE DEVICES MUST BE EARTHED.

For the device to be operated safely, installation and initial start-up must be performed by qualified

personnel in a workmanlike manner, with all of the directions mentioned in the present Operating

Instructions being followed as specified.

In particular both the generally and locally applicable installation and safety regulations for any work on

power installations (e.g. VDE) and the regulations concerning the professional use of tools and the use of

any equipment for personal protection must be observed

The mains input terminals may be dangerously live even after the motor has stopped (e.g. as a result of an

electronic signal disabling the [RUN] condition, or following a jamming of the drive). The motor being at rest

does not mean that it is also electrically isolated from the mains.

Always use insulated screwdrivers in the terminal areas concerned.

Make sure that the source of input voltage is disconnected before you establish connections to

the unit or change them.

Touching exposed or unconnected terminals may lead to serious injuries or even death!

European EMC Directive

If the instructions of the present manual regarding installation of the NORDAC connect switchgear are duly

followed, the device will meet all of the EMC requirements defined in the applicable directive in accordance with

the EN61800-3 product standard for motor-driven systems.

2 And this is how it works

•

The NORDAC connect contains a power switch which, by providing a 24 V DC control signal [RUN], will

cause the permanently applied voltage to be fed to the motor windings.

•

At the same time, if there is a mechanical brake, it is lifted automatically via the integrated brake rectifier.

The drive starts to run.

When the control signal is removed, the power supply to the motor windings is cut off as well, and the

mechanical brake takes hold again.

•

All the time the drive is in operation the motor temperature is monitored by a thermal relay. In the event of a

temperature fault, the NORDAC connec t will automatically switch off the drive and transmit a fault signal to

the master control system ( the [OK] signal changing to low ).

•

A reversal of the phase sequence is obtained by way of exchanging two input phases.

BU 6200/00 GB

English

3 Connection

GND

DC 24 V

TEMP1

TEMP2

RUN

3.1 Power supply

Terminal

Connec-

tion

Clockwise rotation

Anti-clockwise rotation

Use 4 mm ring tongues to connect the unit to the mains.

When you install the NORDAC connect , never do anything conflicting with the safety regulations !

3.2 Control terminals

Terminal

Function

GND

0 V reference potential

DC 24 V

24 V DC supply voltage

24 V DC enable signal

high = start , low = stop

RUN

24 V DC readiness-for-operation acknowledgement signal

high = ready for operation, low = excess temperature

...1.5 mm 2

Maximum connection cross section:

Optional: M12 circular connector

If M12 system cables are used (e.g. when the switchgear is to be connected to a field bus subassembly), the

NORDAC connect can be equipped with an optional M12 flush-mounting connector.

The M12 flush-mounting connector can be inserted in any of the four M25 cable entries.

Colour

Function

brown

24 V DC

white

RUN

blue

GND

black

BU 6200/00 GB

NORDAC connect Operating Instructions

3.3 Thermal protection of the motor

To protect the motor from overheating, the motor winding is continuously monitored by a thermostat connected

to the terminals TEMP1 and TEMP2. Whenever an overload or overtemperature condition occurs, the NORDAC

connect will switch off the drive automatically.

If the enable signal [RUN] is not removed, the drive will start up again on its own when the

motor temperature has sufficiently decreased.

To prevent the drive from restarting automatically, evaluation of the readiness-for-operation acknowledgement

[OK] signal can be assigned to a control device (PLC).

3.4 Three-phase brake motors with a NORDAC connect

Whenever a three-phase brake motor is combined with a NORDAC connect motor switch, the wiring needed to

connect the brake is taken care of at the factory.

The brakes used have got a coil voltage of 180 V DC. They are connected to terminals BR1 and BR2 .

4 Technical data

NORDAC connect

Power terminals

Mains voltage

3 AC 380 V ... 440 V

10%, 47 to 63 Hz

Mains current

0.5...8.0 A

Motor rating

4-pole three-phase standard

motor

(kW)

0.25...3.0

1 / 3 ...4

(hp)

Control terminals

U 24V

I 24V

19 V...30 V

< 50 mA + I OK

< 1A (short-circuit)

Supply voltage

U RUN(AUS)

U RUN(EIN)

0...5 V, I RUN < 2 mA

15..30 V, I RUN < 20 mA

Control input (RUN)

Overtemperature

U OK (high)

U OK (low)

I OK (max)

U 24V

high-impedance

0...0,68A (short-circuit)

Output (OK)

Type of enclosure:

IP55

-10 o C to +50 o C

Ambient temperature:

Getriebebau NORD

GmbH & Co. KG

Postfach 12 62

22934 Bargteheide

Tel.: 04532/401-0

⋅

Telefax: 04532/401-555

Änderungen vorbehalten

Specification subject to change without prior notice

Printed in Germany

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