Installation and Operating Instructions for Netter Electric External Vibrators These operating instructions apply to: Series NEA Series NEG Sept. 2017 No.
Contents 1 GENERAL INFORMATION 3 2 SAFETY 6 3 TECHNICAL DATA 7 4 DESIGN AND FUNCTION 9 5 TRANSPORT AND STORAGE 10 6 INSTALLATION 11 6.1 Fixation of the vibrator 11 6.2 Electrical connections 12 7 START-UP 15 8 ADJUSTMENT OF UNBALANCES 16 9 TROUBLESHOOTING 20 10 MAINTENANCE AND SERVICING 21 11 SPARE PARTS 25 12 ACCESSORIES 26 13 DISPOSAL 27 14 ANNEX 27 Scope of delivery Please refer to the delivery note for the scope of delivery.
1 General information Use and storage Before using the electric external vibrators of the series NEG read this operating manual carefully. It is the basis for any action taken with regard to the NEG and may be used for training purposes. The operating manual should subsequently be stored near the NEG.
The following instruction and warning symbols are used in these operating instructions: DANGER indicates a possible explosion which will result in death or personal injury if the instruction is not followed. WARNING indicates a possible danger which can result in personal injury, and/or material damage if the instruction is not followed. HOT SURFACE indicates a possible danger which can result in personal injury, and/or material damage if the instruction is not followed.
Information on the NEA and NEG Netter electric external vibrators of the series NEA and NEG comply with the EC machinery directive 2006/42/EC, the electromagnetic compatibility directive 2014/30/EU and the low voltage directive 2014/35/EU. In particular, the standards DIN EN ISO 12100, DIN EN 60529 and DIN EN 60034-1 have been complied with.
2 Safety Intended use: The vibrators are intended for installation in machines according to the equipment group and category. These machines use vibrations for sieving, loosening, conveying, compacting and separating bulk materials. Any other use is considered improper. . Qualification of the personnel: Assembly, commissioning, maintenance and trouble-shooting of the vibrators may only be performed by authorised qualified personnel.
3 Technical data Permissible operating conditions Nominal voltage, nominal frequency: The mains voltage and the mains frequency must comply with the nominal voltage and nominal frequency indicated on the type plate. Series NEA und NEG: Voltage and frequency: see details on type plate. Power supply with: • fixed voltage and frequency or • frequency converter The operation of three-phase vibrators of the series NEG with frequency converters allows rotary speeds > nominal frequency.
Please refer to the type plate for the technical data of your electric external vibrator. Type plate for sizes 50 and 60 type designation rotary speed nominal voltage current phases serial number duty cycle centrifugal force nominal frequency power insulation class year of manufacture / degree of protection Type plate from size 100 on temperature class T (D) duty cycle centrifugal force rotary speed / nom. frequency power input power output insul.
4 Design and function • The motor shaft is made of heattreated alloyed steel. • The special bearings are over-dimensioned and designed for heavy loads and high frequencies. • All units are ideally suited for speed control with frequency converters. • The housings of the sizes 50 to 140 and 160 are made of an aluminum alloy. • The housings of the sizes 150 and 170 to 210 are made of high-tensile nodular cast iron.
5 Transport and storage Check the packaging for possible shipping damage. If damage to the packaging is found check the content for completeness and IMPORTANT possible damage. In case of damage inform the freight forwarder. The units are packed ready for installation. The type plate is attached to the vibrator. If not otherwise specified, the vibrator is delivered with an unbalance setting of 100 %. When transporting the vibrator make sure to avoid hard impacts or vibrations which could damage the bearings.
6 Installation The installation of the vibrators must only be carried out by authorised, qualified staff. IMPORTANT The staff has to work exclusively with tools suitable for the application. During installation please comply strictly with the safety regulations in chapter 2 and the accident prevention rules! IMPORTANT Installation of the system must be performed in compliance with the local, applicable regulations (e.g. VDE-regulations). 6.
Use an additional safety device with steel cable for critical installation situations, e.g. NSE. DANGER Use the wire cable clamps to set the safety cable to the shortest possible cable length. The safety cable must always be tensioned! 6.2 Electrical connections The electrical installation of the vibrators must be performed only by authorised, qualified staff. IMPORTANT The staff has to work exclusively with tools suitable for the application.
Connection example for NEA Capacitor in cable Cable with capacitor box A suitable overload protection must be pre-connected to each vibrator. The motor protection switches must be interlocked with each other in pairs, so that in the event of a motor failure, the IMPORTANT power supply from both motors is interrupted at the same time in order not to cause uncontrolled vibrations which can damage the system.
DANGER DANGER Thermic overload protection: Standard equipment with PTC-thermistor 130°C from housing size 170 upwards. For smaller vibrators: available on request as initial equipment. If the vibrator is operated in areas with potentially explosive dust (zone 22), it is compulsory to connect the PTC-thermistor. This regulation does not apply for units without a PTC-thermistor. Only suitable, flexible supply cables must be used for connecting the vibrators.
7 Start-up When commissioning the vibrators, the rules and regulations of the local associations for electrical engineering (e.g. VDE) and the valid accident prevention regulations must be observed. The vibrators must always be switched on and off at the main switch. IMPORTANT When operating the external electric vibrators with a frequency converter, compliance with the EMC directive must be ensured. If the speed is controlled with a frequency converter, the maximum centrifugal force must not be exceeded.
8 Adjustment of unbalances For all vibrators of the series NEA and NEG, there is the possibility of unbalance adjustment. Unless otherwise specified by you, the units were delivered with the standard IMPORTANT setting (100 %). By adjusting the unbalances, you can directly influence oscillation bandwidth, centrifugal force and current consumption.
Unbalance discs of the type XL Number of unbalance discs per side The centrifugal force is adjustable with the unbalance lamella discs of type XL in the following steps: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 100 93 87 80 73 67 60 53 47 40 33 27 20 13 7 100 92 85 77 69 62 54 46 38 31 23 15 8 centrifugal force in % 100 91 82 73 64 55 45 36 27 18 9 100 90 80 70 60 50 40 30 20 10 100 89 78 67 56 44 33 22 11 100 88 75 63 50 38 25 13 100 86 71 57 43 29 14 100 83 67 50 33 17 100 80 60 40 20 100 75 50 25
Unbalance lamella discs of the type XLs Adjustment of the unbalances is carried out according to a scale disc or the supplementary sheet in the terminal box of the unit. By rotating the outer, adjustable unbalance disc(s) to another position, the percentage of the centrifugal force changes as shown in the illustration below. The grid position is defined by position pins. Settings: Example: The NEG 50120/50 Hz has a total of 6 unbalance discs (3 discs per side: 2 fixed, 1 adjustable).
Unbalance discs of the type XS The unbalance setting of the unbalance discs of the type XS is carried out on the scale on the fixed unbalance. The centrifugal force can be steplessly adjusted by turning the outer unbalance discs and adjusting them at the partial strokes. After adjusting the unbalances, the nuts and screws must be tightened with the specified torque.
9 Troubleshooting IMPORTANT Fault Troubleshooting may only be carried out by authorised qualified staff. The qualified personnel must only use tools suitable for the application.
10 Maintenance and servicing When working on the vibrators, these must be safely disconnected from the electrical mains. The procedure is as follows: DISCONNECT POWER SUPPLY 1. 2. 3. 4. 5. Switch off vibrator. Secure against unintentional switching on. Determine that NEA and NEG are voltage-free. Earth and short-circuit. Cover and fence off neighbouring live parts.
Lubrication Service life of ball and roller bearings Vibrators up to the housing size 120 have ball bearings. These are lubricated for their service life (permanent lubrication). When operating in a potentially explosive dust atmosphere, the operator must regularly check the condition of the bearings and the duration of operation of the vibrators. Roller housings are mounted from housing size 130 up. These are lubricated with the grease of the type KLUEBER Staburags NBU 8 EP.
Grease quantity during lubrication and replacement of bearings and bearing life Type Grease quantity [g] NEA 504 NEA 5020 NEA 5050 NEA 5060 NEA 50120 NEA 50200 NEA 50300 NEA 50550 NEA 50770 perm. lubrication perm. lubrication perm. lubrication perm. lubrication perm. lubrication perm. lubrication perm. lubrication perm. lubrication perm. lubrication bearing life 50 Hz [h] > 100.000 92.118 8.087 > 100.000 18.075 3.363 4.003 4.148 7.509 NEA 2530 NEA 2570 NEA 25210 NEA 25420 NEA 25540 NEA 25700 perm.
Procedure for lubrication and replacement of bearings: 1. Switch off vibrator, secure against switching on again and ensure that it is volt-free. 2. Loosen Allen screws (29) and remove unbalance covers (27). 3. Dismantle unbalances: Unbalances of the types XL and XLs (15): Screw a long screw with the same thread into a tapped hole for the fastening screws (29) of the unbalance cover. Put a lever between the unbalance discs and this screw.
11 Spare parts When ordering spare parts please provide the following details: 1. Type of unit 2. Description and position of spare part 3.
12 Accessories The following accessories are available for electric external vibrators of the series NEA and NEG: Description Comment Shim washers Compensation for removed unbalance discs CC-unbalances Depending on the direction of rotation, two different torques can be achieved.
13 Disposal Depending on the material, the parts and packaging must be disposed of in an environmentally friendly way.
