Elektror RD 14 F, Operating And Assembly Instructions Manual

15

EN

Operating and assembly instructions RDF

www.elektror.com

9016315 01.20/12

•  Other standards and regulations must be observed 

  depending on the application.
•  Blower feet and consoles must be designed only for the 

  respective blower’s own weight.
•  Cover the open air intake and discharge with protective 

  grilles according to DIN EN ISO 13857.
•  Ensure that the motor has adequate ventilation. 

  Permitted ambient temperatures with:

  Standard model with Elektror motor and a rated voltage of 

  50 Hz or 60 Hz:

  • Ambient temperature -20°C to +60°C

Note!

The rated e

ffi

  ciencies and the e

ffi

  ciency classes 

of the motors are given as per IEC 60034-2-1 for 

operation at an ambient temperature of 25°C.

As per IEC 60038 Elektror motors are generally 

designed for an extended voltage range of ±10%. 

However, the stated e

ffi

  ciency relates to the rated 

voltage, i.e., the extended tolerance is not taken 

into account.

Special voltages, multi-voltage motors, models suitable for 

frequency converters, FUK models, devices with UL ap-

proval, devices with Aircontrol and other motor makes:
  • Ambient temperature -20°C to +40°C
  • Voltage tolerance ±5% (For exceptions, see „4.2 Fre-
quency converter operation“)
•  The drive motor ventilation system must not be a

ff

 ected 

  by the installation situation.

Minimum distance to the blower cover (for the intake of 

cooling air)

Drive power

Minimum distance 

to the blower cover 

[mm]   

[inches]

≤

 1.5 kW

34

1.34

> 1.5 kW

53

2.09

3.3 Electrical connection

Note!

The work described in this section may only be 

performed by a quali

fi

 ed electrician. Connect ac-

cording to the wiring diagram placed in the termi-

nal box complying with relevant local regulations.

Three-phase or a.c. motors can be used as drive motors. 

In the appliance designation, the letter D stands for three-

phase a.c. and the letter E for single-phase a.c.
•  The drive motor must be protected using a motor overload 

  switch (this does not apply to frequency converter oper-

 ated appliances). Where appliances are frequency-

  converter-operated, the existing temperature sensor (PTC 

  resistor sensor) or temperature switch (normally closed 

  contact) must be connected to the converter and evalu-

 ated.
•  The safety earth terminal can be found in the terminal box.
•  Install Electrical ON/OFF switches that can be locked as 

  maintenance / repair switches.
•  Suitable electrical controlling must ensure the blower runs 

  long enough to clear the line system of any residual media 

  and avoid its blockage.
•  Check that the mains voltage corresponds to the voltage

 speci

fi

 ed on the nameplate.

Note!

The following information should also be ob-

served when operating the drive motor with a 

frequency converter:
• Only motors must be used on the frequency 

converter that are marked on the rating plate with 

the option “/FU”, “suitable for use with a frequen-

cy converter” or that were ordered and con

fi

 rmed 

as “suitable for use with a frequency converter”.
• The frequency converter supply voltage must 

only be a maximum of 400 V without the motor 

fi

 l-

ter. Appropriate measures such as a motor 

fi

 lter to 

protect the motor must be installed on the motor 

terminals with higher frequency converter supply 

voltages, longer lines and/or if the pulse voltages 

are exceeded (max. 1000 Vpk for drive motors up 

to 0.75 kW, maximum 1300 Vpk for drive motors 

larger than 0.75 kW)  Please contact the converter 

supplier in this case. If a motor 

fi

 lter is included 

in the delivery, this must be installed between 

the converter and the motor. Please ensure that 

there is su

ffi

  cient space in the switch cabinet and 

take into account the installation and assembly 

requirements in the operating instructions of the 

frequency converter/motor 

fi

 lter manufacturer.

• The maximum cable length between the mo-

tor and switch cabinet frequency converter (e.g. 

Lenze Vector, Omron MX2 and Omron RX) must 

not exceed 20 m. Maximum cable lengths of up to 

3 m are permitted with Kostal INVEOR frequency 

converters installed close to the motor and up to 

10 m with Lenze MOTEC frequency converters. 

Further information on wall mounting close to the 

motor can be found in the original operating and 

assembly instructions of the respective frequen-

cy converter manufacturer. The electrical con-

necting cables between the motor and frequency 

converter in the above cases must be suitable 

shielded cables, laid using the shortest route and 

without clamping and plug-in connections and 

connected correctly at both sides. 
• The shielding braid in the connecting cables 

must be connected fully, continuously and on 

both sides, i.e. to the frequency converter and 

motor, and at low resistance and permanently to 

protective earthing systems or the main earthing 

bus bar. Suitable EMC cable glands must be used 

for this on the motor side and also on the INVEOR 

wall mounting plate, if necessary. 
• It is important to ensure that the solid con-

nection of the device to the protective earthing 

system or several suitable earthing lines is at low 

resistance and permanent for blowers installed 

with electrical insulation (e.g. through vibration 

dampers, compensators, insulated pipes, etc.) for 

frequency converter operation.

For further information about EMV compliant installation refer 

to the operating and assembly instructions of the frequency 

converter’s manufacturer.

3.3.1 Con

fi

 guration for three-phase current blowers

Warning!
Danger due to loose or improperly tightened con-

nections!
Improperly tightened and loose connections 

cause electric shocks, 

fi

 res, property damage and 

personal injuries!
Check for loose connections and tighten in 

accordance with the tightening torques in the fol-

lowing table.