Intelligent Drivesystems, Worldwide Services GB B1091 Operating and Maintenance Instructions Three-phase Asynchronous Motors – Standard Design Explosion-proof Motors with Type of Protection „e“ Dust Explosion-proof Motors (Zone 21+ Zone 22)
Contents 1. 2. 2.1 3. 3.1 3.2 3.3 3.4 3.5 3.6 3.7 4. 5. 6. 6.1 6.2 6.3 6.4 6.5 6.6 7. 7.1 7.1.2 7.2 7.3 7.3.1 7.3.2 7.3.3 7.3.4 7.3.5 7.4 7.5 7.6 8. 8.1 8.2 8.3 8.4 9. 10. General information .............................................................................................................. 3 Description .............................................................................................................................. 4 Range of application ............................................
1. Information 1. General information These Operating Instructions must be read before you transport, assemble, commission, maintain or repair NORD motors. All persons who are involved with such tasks must observe these Operating Instructions. All safety instructions provided in these Operating Instructions must be strictly observed for reasons of personal protection and protection of property.
2. Description 3. Information 2.1 Field of Application Use of the motors: The motors may only be used for their intended purpose. The motors are designed with at least IP 55 protection (for degree of protection see name plate). They may be installed in dusty or damp environments. The necessary degree of protection and any additional precautions required always depend on the operating and environmental conditions. For outdoor installation and vertical designs, e.g.
3. Information 3.2 Installation After installation, screwed-on lifting lugs must be tightened or removed. Smooth running: Precise alignment of the coupling and a well-balanced drive element (coupling, belt pulleys, fans, etc.) are prerequisites for quiet, low vibration operation. Complete balancing of the motor with the drive elements may be necessary. The upper section of the terminal box and the terminal box position can be rotated by 4 x 90 degrees.
3. Information Refer to the table below for the tightening torques of the screw connections of electric terminals and the terminal board connections (apart from terminal strips): Tightening torques for terminal board connections Thread diameter M4 M5 M6 M8 Tightening torque (Nm) 0.6 – 1.2 1.8 – 2.5 2.7 – 4.0 5.5 – 8.0 If the machine has an standstill heater, it must not be switched on during operation. 3.
4. Maintenance, Servicing Safety measures Always isolate the motor electrically according to the regulations before commencing any work on the motor or device, especially before opening covers of live components. In addition to the main power circuits, any additional or auxiliary circuits must be taken into account. The standard "5 safety rules", e.g.
5. Motors with ignition protection class "increased safety Exe" The following supplementary or the following specific information applies for these motors. The motors are suitable for use in Zone 1 and conform to equipment group II, category 2G, and may be used at an ambient temperature between -20°C and +40°C. Type supplement: 2G e.g.: 80 L/4 2G TF The marking is 0102 II 2G Ex e IIC T3 Gb with details of the temperature class.
5. Motors with ignition protection class "increased safety Exe" Each machine must be protected against impermissible development of heat by means of a currentdependent delayed protection switch tested for operation by an approved facility, with phase-failure protection compliant with VDE 0660 or an equivalent system in all phases. The protective system must be set to the rated current. If windings are connected in a delta circuit the trips must be connected in series with the winding phases and set to 0.
5. Motors with ignition protection class "increased safety Exe" Painting: The motors are supplied with a maximum paint thickness of 0.2 mm in order to prevent electrostatic charging. In case of repainting, the total thickness of the paint layer, including the original painting, must not exceed 0.2 mm.
6. Motors for use in Zone 21 and Zone 22 6.1 General information The following information applies additionally or particularly for category 2D and 3D motors! According to their labelling, the motors are suitable for use in Zone 21 (category 2D) or Zone 22 – non-conductive dusts (category 3D) . Type suffix: Zone 21: 2D e.g.: 80 L/4 2D TF Zone 22: 3D e.g.
6. Motors for use in Zone 21 and Zone 22 If the motor is supplied with a certified cable gland, the clamping nuts of the cable gland must be tightened to the torque specified in the following table. Cable gland M20x1.5 M25x1.5 M32x1.5 M40x1.5 Clamping nut tightening torque [Nm] 6 8 12 16 The permissible ambient temperature range for all motors is -20°C...+40°C. An extended ambient temperature range of -20°C...+60°C is permissible with motors for operation in Zones 21 and 22.
6. Motors for use in Zone 21 and Zone 22 6.6 Maintenance The voltage must always be switched off and secured against being switched on again before opening the motor! Notice ! Higher temperatures than the maximum permitted surface temperature of the housing may be present inside the motor.
7. Motors for use in Zone 21 and Zone 22 according to EN 60079-0 and IEC 60079 NOTICE! Section 7 of these operating instructions applies as a supplement for explosion protected electric motors for Zone 21 and Zone 22 according to EN 60079 and IEC 60079. Please disregard Section 6 for these motors. 7.
7. Motors for use in Zone 21 and Zone 22 according to EN 60079-0 and IEC 60079 7.3 Commissioning information / Field of application If the motors are intended for inverter operation, this must be specified when ordering. The motors must be protected against overheating with suitable monitoring equipment! The thickness of dust deposits must not exceed 5 mm! The motors are designed for the voltage and frequency range B of EN 60034 Part 1.
7. Motors for use in Zone 21 and Zone 22 according to EN 60079-0 and IEC 60079 7.3.1 Electrical Connection The electrical connections of the terminal board are protected against twisting. The voltage supply to the terminal board must be made by means of suitable ring terminals. The ring terminals are installed between the two brass washers below the lock washer. The nuts must be tightened with a torque according to the table below.
7. Motors for use in Zone 21 and Zone 22 according to EN 60079-0 and IEC 60079 Assignment of Cable Glands to Motor Size Cable glands for standard motors Type Number Thread Number Thread Cable glands for brake motors Number Thread Type Number Thread Number Thread Number Thread 63 2 M20x1.5 63 4 M20x1.5 2 M12x1.5 71 2 M20x1.5 71 4 M20x1.5 2 M12x1.5 80 2 M25x1.5 80 4 M25x1.5 2 M12x1.5 90 2 M25x1.5 90 4 M25x1.5 2 M12x1.5 100 2 M32x1.5 100 4 M32x1.5 2 M12x1.
7. Motors for use in Zone 21 and Zone 22 according to EN 60079-0 and IEC 60079 If the end of the shaft faces upwards, e.g. version IMV3, IMV6, a cover must be provided by the operator / installer, which prevents foreign bodies from falling into the fan cover of the motor (see DIN EN 60079-0, Item 17, or IEC 60079). This must not obstruct the fan from cooling the motor. If the end of the shaft faces downwards, e.g.
8. Options for motors for use in Zone 22 8.1 Inverter operation option ATEX NORD motors for Zone 22 are suitable for inverter operation due to the design of their insulation system. Because of the variable speed range, temperature monitoring with PTC resistors or temperature monitors is necessary. For safe planning and use, the engineering guideline for the operating and assembly instruction B1091-1 must be observed.
8. Options for motors for use in Zone 22 8.4 Brake option Motors with the additional labelling BRE (e.g. 80S/4 3D BRE 10) are equipped with a brake and must be monitored via the integrated temperature sensor. If the temperature sensor of one of the components (motor or brake) is triggered, the entire drive must be safely shut down. The motor and brake PTC's must be connected in series. The brake may be used as a holding brake with up to 4 activations per hour.
9. Spare parts drawing and spare parts list Item No. 00 902 902.1 902.2 904 905 906 907 907.1 907.2 908 908.1 909 910 911 911.1 911.5 912 912.1 913 913.1 913.2 916 916.1 916.
10. Conformity Declaration -22- B1091-GB-4613 www.nord.
10. Conformity Declaration www.nord.
10. Conformity Declaration -24- B1091-GB-4613 www.nord.
NORD DRIVESYSTEMS GROUP www.nord.com/locator Getriebebau NORD GmbH & Co. KG Getriebebau-Nord-Straße 1 22941 Bargteheide, Germany Fon +49 (0) 4532 / 289 - 0 Fax +49 (0) 4532 / 289 - 2253 info@nord.com, www.nord.com Member of the NORD DRIVESYSTEMS Group DRIVESYSTEMS Mat.-Nr.
