NORD BU0310 User Manual

Getriebebau NORD

GmbH & Co. KG

Supplementary Instructions For ATEX-Designed

NORDAC trio SK 300E

Frequency Inverters

SK 300E-XXX-340-B-3D-T125

BU 0310 GB

NORDAC SK 300E frequency inverters

for use in areas with explosive gas atmospheres

General remarks

We urgently recommend reading these Operating Instructions before transporting,
installing, configuring or servicing a NORDAC frequency inverter. Each person
entrusted with any of the tasks mentioned above is supposed to follow both the Basic
Operating Instructions and the instructions contained in the present Supplement. All of
the safety information mentioned in the said manual and in the present Supplement
must strictly be observed to ensure personal and material protection. Prevention of
dangerous situations and damages crucially depends on safety instructions to be taken
seriously and to be implemented!

Other provisions and requirements to be taken into account include those applicable on
a national and local scale as well as the specific parameters and instructions relating to
the technical system of which the inverter will be a part.

Important!

In addition you should by all means be aware of the maximum allowable
operating speed and the maximum allowable output torque of the reducer unit.
These values are indicated on the reducer´s type plate and must never be
exceeded!

Skilled personnel with the proper qualification

It is presumed that all of the transport, assembly, installation, parameterization and
maintenance work is performed by technical personnel qualified for their tasks. The
term "qualified" is is understood to refer to individuals who, having been properly
trained and instructed and on account of their experience and knowledge of relevant
standards, accident prevention rules, and the respective operating conditions are
qualified to perform the tasks required to set the frequency inverter up for operation.
The personnel involved is also supposed to be familiar with First Aid measures and to
know how to reach the local rescue services.
If the Operating Instructions have got lost for some reason or other, another copy
should be obtained from NORD immediately.

Before starting any of the work related to the frequency inverter make sure that the
system is in a dead state electrically!

2 BU 0310 GB

If the frequency inverter is connected to a motor and a speed reducer, also look for the
markings showing to which extent motor and reducer are explosion-proof!

Special designs and construction varieties may differ from the standard types regarding
certain technical features. If in doubt, by all means contact the manufacturer stating the
type designation and the NORD identification number and ask for the required
information.

Safety instructions

As the explosion hazard is definitely increased in areas where the air contains
inflammable dust, strict adherence to the general safety instructions and to the
instructions for system start-up is indispensable. The drive is supposed to meet the
requirements specified in Guide No. 6052101 for control process design. If ignited
by hot or spark-emitting objects, explosible dust concentrations may cause explosions
which may result in grave or even fatal personal injuries and in substantial material
damage.

It is absolutely necessary that each person responsible for the use and operation of
motors and frequency inverters in hazardous locations is well schooled in how to do
this safely in the appropriate fashion.

Always disconnect the supply voltage before you open the frequency inverter to
connect the electrical lines or to perform any other work on the device, and protect it
against circuit reclosure! Warning! Temperatures inside the frequency inverter and the
motor may occasionally exceed the maximum allowable surface temperature of the
housing. That is why the frequency inverter must never be opened or detached from
the motor while it is surrounded by an atmosphere which contains explosible dust!
Check the inverter for dust deposits regularly. When there is more dust than allowed,
heat from the inverter can no longer be carried off as effectively as required! If there is
doubt about whether the inverter is still performing reliably, the motor needs to be
stopped !
Always to ensure dust protection of the motor as well is immensely important with
regard to explosion protection.

Repairs on the frequency inverter must not be performed by any other party but
NORD as the manufacturer.

BU 0310 GB 3

II 3D T125°C

Parameter

Setting value

Default

Description

P105

Maximum
frequency

≤ 100 Hz

[50]

This value is related to a 4-pole motor.
Always select a value that will ensure
that a motor speed of 3000 rpm is not
exceeded.

P200
Motor list

No. from BU 0300
according to the
motor rating

[0]

When a NORD motor is connected,
selecting the appropriate number will
activate the default settings of the
motor used.

P201 – P208
Motor data

Data obtained
from the type plate

[***]

When the motor is from a different
manufacturer, the motor data from the
type plate must be copied to the
applicable parameters.

P420

Function dig.
input1

[13] PTC resistor
input

[13]

Digital input 1 must be parameterized
to ensure the PTC resistor function
and with it temperature control of the
motor.

P535

I²t motor

[1] activated

[0]

The I²t setting 1 for over current
control of the motor is imperative.

Instructions for parameterization / Scope of application

As the marking shows, the frequency inverter and the motor are suitable for use in
zone 22 (non-conductive dust).

The marking is as follows:
For zone 2 operation of frequency and motor, cable entries must ensure at least the IP
55 type of protection. Openings which are not in use have to be sealed with dummy
plugs (minimum type of protection IP 55).

The frequency inverter ensures protection of the motor against overheating by
evaluating the PTC resistor of the motor. For this effect to be obtained, digital input 1
must be assigned the "PTC resistor" function (P420 = 13). Be sure, too, to select the
NORD motor you are using from the motor list (P200). When a motor from a different
manufacturer is used the motor parameter data (requested to be set in P201 to P208)
must be copied from the type plate of the motor. Best verify whether the settings of the
respective parameters correspond with the type plate before starting the motor.
Furthermore the frequency inverter should be parameterized so as to prevent the motor
from running at a speed greater than 3000 1/

. For a four-pole motor the ´maximum

min

frequency´ should be set to a value less than or equal to 100 Hz (P105 ≤ 100). When
you make this setting don´t forget to take the maximum allowable output speed
of the gearbox into account!!! Also activate the "I²t motor“ control in parameter P535.

Table of the required parameter settings:

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Wire colours on the

potentiometer

Designation

Terminal

red

+10V

11

black

AGND / 0V

12

green

analogue input+

analogue input 1

14

Set point adjustment with

a screwdriver

Reference voltage +10 V (10 mA max.) [11]
AGND, 0V [12]
Analogue input - [13]

Analogue input + [14]
Digital input 2 [enable right] [22]
Digital input 3 [enable left] [23]
Digital input 4 [to switch parameter sets] [24]

Supply voltage +15 V (100 mA max.) [42]

Set point potentiometer

The category-3D SK 300E inverter can be equipped with a potentiometer meeting
ATEX standards which can be used to vary the set point (e.g. the speed) on the device.

Designation: Potentiometer ATEX22 - SK 300E
Part number: 075142000

The selected set point can be adjusted with a screwdriver. As far as the potentiometer
is concerned, it will meet ATEX requirements due to a sealing cap which can be
screwed on. For continuous operation the sealing cap must remain fixed.

Technical data:

Resistance value of the potentiometer: 10 kilo-ohms

For a potentiometer to be used with the SK 300E frequency inverter, the device must
always be equipped with a customer interface (Basic I/O or Standard I/O)!
Typical assignments of the Basic I/O module terminals:

BU 0310 GB 5

6 BU 0310 GB

Contact

If the frequency inverter needs to be repaired, please send it to your local NORD
distribution agency.

If you would like more or specific information regarding the frequency inverter or if
you want to send us the complete aggregate for the geared motor (or the complete trio
SK 300E) to be repaired, kindly contact:

Getriebebau NORD GmbH & Co. KG

Rudolf-Diesel-Straße 1

D-22934 Bargteheide / Hamburg

Phone: 04532 / 401-0
Fax: 04532 / 401-555

Before you dispatch a frequency inverter for repair, please remove any parts which are
not genuine, because we are not in a position to guarantee any parts which may still
be attached such as line cables, potentiometers, external display units etc.

Additional documentation on all of NORD´s electronic products is provided on our site
in the internet, in German, English, French, and in a number of other languages as
well.

>>> http://www.nord.com <<<

BU 0310 GB 7

Mat. Nr. 607 3102 / 5204

NORD Offices in Germany

Getriebebau NORD GmbH & Co. KG

Rudolf- Diesel- Str. 1 22941 Bargteheide
Telephon 04532 / 401 - 0

Telefax 04532 / 401 - 253

[e-mail]
www.nord.com

North Branch

South Branch

Getriebebau NORD GmbH & Co. KG

Rudolf- Diesel- Str. 1 22941 Bargteheide
Telephone 04532 / 401 - 0

Telefax 04532 / 401 - 253

[e-mail]

Getriebebau NORD GmbH & Co. KG

Katharinenstr. 2-6 70794 Filderstadt­Sielmingen

Telephone 07158 / 95608 - 0
Telefax 07158 / 95608 - 20

[e-mail]

Sales office Bremen

Getriebebau NORD GmbH & Co. KG

Stührener Weg 27 27211 Bassum
Telephone 04249 / 9616 - 75

Telefax 04249 / 9616 - 76

[e-mail]

Sales office Nürnberg

Getriebebau NORD GmbH & Co. KG

Schillerstr. 3 90547 Stein
Telephone 0911 / 67 23 11

Telefax 0911 / 67 24 71

[e-mail]

Representation:

Hans-Hermann Wohlers
Handelsgesellschaft mbH

Ellerbuscher Str. 179 32584 Löhne
Telephone 05732 / 40 72

Telefax 05732 / 123 18

[e-mail]

Sales office München

Getriebebau NORD GmbH & Co. KG

Untere Bahnhofstr. 29a 82110 Germering
Telephone 089 / 840 794 - 0

Telefax 089 / 840 794 - 20

[e-mail]

West Branch

East Branch

Getriebebau NORD GmbH & Co. KG

Großenbaumer Weg 10 40472 Düsseldorf
Telephone 0211 / 99 555 - 0

Telefax 0211 / 99 555 - 45

[e-mail]

Getriebebau NORD GmbH & Co. KG
Leipzigerstr. 58 09113 Chemnitz
Telephone 0371 / 33 407 - 0

Telefax 0371 / 33 407 - 20

[e-mail]

Sales office Butzbach

Getriebebau NORD GmbH & Co. KG

Marie- Curie- Str. 2 35510 Butzbach
Telephone 06033 / 9623 - 0

Telefax 06033 / 9623 - 30

[e-mail]

Sales office Berlin

Getriebebau NORD GmbH & Co. KG

Heinrich- Mann- Str. 8 15566 Schöneiche
Telephone 030 / 639 79 413

Telefax 030 / 639 79 414

[e-mail]