MEMMINGER-IRO MRA 2 Operating Instructions Manual Download Page 4

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Safety

Permitted uses

The MRA 2 system is designed solely for feeding yarn to textile machines. All other uses are not permitted. The manu-

facturer will not accept any liability for damages resulting from non-permitted uses. The user is liable for damages 

resulting from non-permitted uses.

Safety precautions

No special training is required to operate an MRA 2 system. 

The operator is responsible for ensuring that all instructions regarding the electrical installation, fitting, operation and 

maintenance of the MRA 2 are implemented.

The MRA 2 must only be installed and serviced by qualified electricians working in accordance with current electrical 

engineering practices and regulations.

The MRA 2 has electronic components which are sensitive to interference from electrostatic charges. Before 

you open the equipment housing, you should take precautions to prevent electrostatic charges. You can 

discharge any electrostatic charges beforehand by touching an earthed object such as the machine or the 

earth contact of a socket.

The MRA 2 system is designed for operation with a 3 x 400 V AC power supply. The power supply for the MRA 2 must 

be taken from the circular knitting machine. The power supply to the MRA 2 must be switched on and off from the 

main switch of the circular knitting machine. This means that the MRA 2 can only be powered up when the machine 

is powered up. When the machine is turned with the hand lever, the unit must be ready for operation.

Before you start any adjustments, even small ones, you must power down the knitting machine. Power up the equip-

ment only after you have completed these adjustments.

In the interests of your own safety, please enter all the necessary data on the GT3 console.

Before you start any adjustment of the unsprung tensioner device, power down the circular knitting machine. 

Only use original spare parts and accessories. 

Warranty

Failure to follow the instructions in this manual will void your warranty. The manufacturer will not accept any liability 

for damages or operating faults resulting from failure to follow the instructions in this manual.

Disposal

You should dispose of MRA 2 components in compliance with the regulations for the disposal of electrical and elec-

tronic components.

Symbols used in this manual

CAuTIOn!

This symbol marks important instructions where failure to follow the instructions can cause personal 

injury or damage to the equipment.

InfOrMATIOn!

This symbol marks useful information which will help you to get the best from the equipment.

!

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Summary of Contents for MRA 2

Page 1: ...Operating Instructions english 027 920 000 01 27 05 09 MRA 2...

Page 2: ......

Page 3: ...one diameter ring with two toothed belts 5 Twin motors on two different diameter rings with four toothed belts 5 Single motor and twin motors on three different diameter rings with five toothed belts...

Page 4: ...circular knitting machine The power supply to the MRA 2 must be switched on and off from the main switch of the circular knitting machine This means that the MRA 2 can only be powered up when the mach...

Page 5: ...nology The MRA 2 motor incorporates a frequency converter which converts line current into three phase alternating current with variable frequency No additional electrical cabinet is required because...

Page 6: ...allation options Single motors on two different diameter rings with two toothed belts Single motor on one diameter ring with one toothed belt Single motors on two same diameter rings with two toothed...

Page 7: ...tions Twin motors on two different diameter rings with four toothed belts Twin motor on one diameter ring with two toothed belts Single motor and twin motors on three different diameter rings with fiv...

Page 8: ...ate in order to fine adjust the hollow shaft encoder ratio see the section Setting the hollow shaft encoder for the set yarn feed rate Example 10 8 1 Setting the toothed belt length MPF unit on the fe...

Page 9: ...4 onto the drive shaft 8 Screwthescrew 1 oftheadapter 2 intothekeyway on the drive shaft 8 Attachtheencodersupport 6 tothedrivebar column 9 of the knitting machine Caution Only the rotor 3 of the hol...

Page 10: ...r on the machine foot 585 V 530 V 485 V 440 V 585 V 530 V 485 V 440 V 585 V 530 V 485 V 440 V Power supply from knitting machine 3 x 440 585 V 50 60 Hz Power supply for the control unit 3 x 400 V 50 6...

Page 11: ...n i Fitting the MRA 2 motors Attach the MRA 2 motors 7 to the motor flange 3 with the cheese head screws 5 Adjust the toothed pulley 2 with the cone clamping element 1 to the same height as the tensio...

Page 12: ...up against the flanks of the tension rollers belts will be damaged if they run up against the flanks Do not kink or twist the toothed belts Fitting the GT 3 console Fit the GT 3 console to the motor...

Page 13: ...ions Connect up the MRA 2 system as shown on the terminal connection diagram Caution The MRA 2 must only be installed and serviced by qualified electricians working in accordance with current electric...

Page 14: ...tthislevelcanconfiguretheencoder the number of teeth on the MRA 2 motor toothed pulley the feeder direction of rotation and the unit of measurement metres or inches used Operation Layout of GT3 consol...

Page 15: ...of hollow shaft encoder revolutions per machinerevolution i e theratiobetweenthemachine cylinder and the hollow shaft encoder 2 Information Enter the ratio on the system before you install theunit se...

Page 16: ...t enter the yarn feed rate per feeder revolution 2 and the number of teeth on the toothed pulley 3 using the touchpad 1 3 2 YoucannotmodifythedefaultsettingsfortheMPF MER B MER C and MCF feeders Set t...

Page 17: ...r ratio Start the knitting machine Measure the actual yarn feed rate per machine revolution If the actual yarn feed rate does not match the origi nal yarn feed rate you must adjust the hollow shaft en...

Page 18: ...ation Yarn feed rate reduction factor 1 To modify the reduction factor enter the password 2810 Number of machine revolutions for which fabric press off rectification is valid 2 Numberofmachinerevoluti...

Page 19: ...t occurs this is indicated immediately on the GT 3 console display Operation Console menu Software version of GT3 console 1 Modify the unit of measurement 2 metres or inches Change the user language S...

Page 20: ...nnect a motor cable you must power down the knitting machine Wait two minutes before unplugging the motor cable Yes Set the parameters correctly The MRA 2 motor does not run Check if the MRA 2 motor h...

Page 21: ...19 MRA 2 motor Dimensions 75 187 5 14 94 129 5 159...

Page 22: ...20 Control unit Dimensions 118 20 105 33 151 210 18 5...

Page 23: ...21 GT3 console Dimensions 200 47 2 5 150 Hollow shaft encoder 30 80 30 6 6 10 5 25 111 1 7 8 3xM4...

Page 24: ...rt 4 2 Testing and measurement techniques Electrostatic discharge immunity test EN 61000 4 3 Electromagnetic compatibility EMC Part 4 3 Testing and measurement techniques Radiated radio frequency elec...

Page 25: ......

Page 26: ...Mutz Stra e 7 Internet www memminger iro de D 72280 DORNSTETTEN 2006 MEMMINGER IRO GmbH D 72277 DORNSTETTEN Nachdruck auch auszugsweise nur mit schriftlicher Genehmigung der MEMMINGER IRO GmbH nderun...

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