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11

Blank Display

If the display is blank (dark), disconnect the equipment from mains, open the
housing and disconnect all cables and wires from the subassemblies.
Then connect the equipment to power again through an isolating transformer and
connect all subassemblies again, measuring the supply voltage in each case.

– The voltage at the power supply output (connector A; see page 12) is

15V ± 0.3 V direct current.

– The output voltages of the DC/DC converter are listed on page 13.

Replacing the Power Cable

– Disconnect the cable from the power source.

– Open the housing.
– Replace the cable

Note:

After replacing the power cable, use
a torque wrench to tighten the cable
gland to 3 Nm

3 Nm

3 Nm

3 Nm

3 Nm.

pg_netz.jpg

Repairing the Midrics Indicator

AUT23977a.JPG

Summary of Contents for MIS1

Page 1: ...vice Manual Sartorius Midrics Series Models MW1P MW2P MW1S MW2S for Complete Midrics Scales Models MIS1 MIS2 for Midrics Indicators and Models MAPP1 MAPS1 MAPP4 MAPS4 for Midrics Weighing Platforms in...

Page 2: ...15 Terminal Assignments in Midrics Indicators 16 Interface Description 17 RS 232 Interface 17 RS 485 Interface 17 RS 485 Analog Interface 17 Digital I O Interface 18 COM1 Interface With and Without C...

Page 3: ...fications MW NCE MAP NCE 37 Adjusting the Weighing Platform Load Cell Connection Color Assignments 38 Determining the Resistance for Adjustment of the Off center Load 39 Determining Resistance Values...

Page 4: ...nnect or disconnect cables to or from the equipment always disconnect the power cable from the wall socket mains supply first Information To ensure safety an isolating transformer must be installed be...

Page 5: ...erable experience and for this reason should be performed only by Sartorius technicians trained at the factory Any attempt to perform repair work can result in damage to the equipment Auxiliary Servic...

Page 6: ...pen ended wrenches spanners up to 24 mm stainless steel 1 Threaded rod M 16x120 for lifting the weighing platform available from specialist supplier 1 Set of screwdrivers slotted 1 Set of screwdrivers...

Page 7: ...capacities from 3 kg to 3000 kg in stainless steel or steel and indicators The Midrics 1 2 indicators consist of Front panel with keypad and digital display Midrics 2 has additional keys Midrics indi...

Page 8: ...the menu access switch is closed the error message ACCESS SWITCH LOCKED is displayed in the service program and the indicator shows L underload or H overload In this case the A D converter cannot be...

Page 9: ...en the Midrics indicator remove the four nuts as shown in the illustration on the left Note After completing maintenance or repair work check the seal between the front panel and the housing body for...

Page 10: ...ifference between the two is the range of operating keys If the indicator housing seal is defective it must be replaced When installing a new seal make sure it rests entirely within the housing and is...

Page 11: ...easuring the supply voltage in each case The voltage at the power supply output connector A see page 12 is 15V 0 3 V direct current The output voltages of the DC DC converter are listed on page 13 Rep...

Page 12: ...openings on the protective cap and carefully push the retainer clips located further down to one side Remove the protective cap and disconnect the two wires blue brown Unplug connector A remove the 2...

Page 13: ...caution to avoid short circuiting the equipment The various supply voltages delivered by the DC DC converter can be measured at the following points M 1 15 V 5 Input voltage for the DC DC converter M...

Page 14: ...ed In many cases this precludes the need to adjust the weighing system Quick test of the A D Converter Pin Assignment Chart No Signal designation Meaning Voltage 1 BR_POS Bridge supply voltage 4 5V 0...

Page 15: ...e indicator Press and hold the k key while switching the indicator on again All segments are displayed In case of defect replace the main PCB After replacing the main PCB use the PpLoadWH8 exe PpLoadW...

Page 16: ...5V_OUT RXD RXD V_out OUT4_LOW 4 GND GND TXD RXD V_in OUT4_HIGH 5 CTS CTS GND GND elec isol GND elec isol OUT3_LOW 6 DTR DTR Universal In GND elec isol GND elec isol OUT3_HIGH 7 RXD RXD MINOR OUT2_LOW...

Page 17: ...xD pull down 680 SW1 4 RS 422 mode open RS 485 mode SW2 1 Terminating resistor receiving side 120 SW2 2 Bias resistor receiving side RxD pull up 680 SW2 3 Bias resistor receiving side RXD pull down 68...

Page 18: ...required for loading software To enable loading of software a solder bridge must be closed on the back of the COM1 interface see illustration on the right Note Before commissioning the COM ports the...

Page 19: ...tform Version with the junction box 5 Part no 57004 428 01 The illustration on the left shows GF frame 650x500 1 Load cell 1 2 Load cell 2 3 Load cell 3 4 Load cell 4 5 Junction box 3 2 4 5 1 or AUT23...

Page 20: ...ble to load cell 1 2 1 Cable to load cell 2 3 1 Cable to load cell 3 4 1 Cable to load cell 4 5 1 Connecting cable for A D converter indicator Adjusting the Weighing Platform Aut15158 jpg 5 1 4 1 3 1...

Page 21: ...e Sense SENSE_NEG Sense Sense OUT_POS Measuring voltage positive Signal OUT_NEG Measuring voltage negative Signal The shield is connected to the housing by means of the cable gland see page 29 To conn...

Page 22: ...ion box open 1 1 Cable to load cell 1 2 1 Cable to load cell 2 3 1 Cable to load cell 3 4 1 Cable to load cell 4 5 1 Connecting cable for A D converter indicator Contacts to connect the cable 5 1 1 1...

Page 23: ...nse Sense OUT_POS Measuring voltage positive Signal OUT_NEG Measuring voltage negative Signal OUT_POS Measuring voltage positive Signal To connect the cable the wires must be connected to the inner te...

Page 24: ...idge supply voltage Supply Gn green SENSE_POS Sense Sense Gr gray SENSE_NEG Sense Sense Rd red OUT_NEG Measuring voltage negative Signal Wh white OUT_POS Measuring voltage positive Signal The terminal...

Page 25: ...0 cm of the load cell cables out of the platform see arrow Return the weighing platform to the horizontal and position it next to the junction box The junction box is now accessible for adjustment of...

Page 26: ...lder bridges and the sequence of the load cells Note The off center load is adjusted only in weighing platforms that have 4 load cells Mechanical asymmetries can result in off center loading errors th...

Page 27: ...0 10 60 60 10 150 150 10 300 300 10 2 Weighing Platforms with Four Load Cells Steel Platform nominal Test weight for Test weight for Nominal load cell capacity in kg middle stops capacity in corner me...

Page 28: ...60 10 150 150 10 4 Weighing Platforms with Four Load Cells Stainless Steel Platform nominal Test weight for Test weight for Nominal load cell capacity in kg middle stops capacity in corner measuremen...

Page 29: ...rter Unscrew the cable gland the cable or load cell can now be replaced Remove the isolation and connect the new cable Expose approx 6 cm 2 4 in of the wires 3 in the cable Remove the isolation from a...

Page 30: ...s basically uncomplicated no detailed description of the disassembly procedure is included here Important To replace a load cell in a platform with four load cells use two eye bolts 6740 81 in two cor...

Page 31: ...g C3 130Nm MP58T 1134kg C3 130Nm MP58T 2268kg C3 130Nm SAG type 011241 7 5 kg C3 10Nm SAG type 011242 15 kg C3 10Nm SAG type 011243 30 kg C3 10Nm SAG type 011244 50 kg C3 14Nm SAG type 011245 100 kg C...

Page 32: ...he Seite 33 in mm No 1 2 3 4 5 6 320 x 240 blue green white red gray black 400 x 300 blue green white red gray black 500 x 400 blue green white red gray black 650 x 500 1 blue green white red gray bla...

Page 33: ...e Sense black gray 7 Shield GND screen gr Shield Shield 1 Sartorius Hamburg MP58T green cable 2 Midrics 011 gray cable Connections in the Junction Box for the A D Converter Pin assignment Designation...

Page 34: ...20 kg 0 02 kg M1 20 kg 60 kg 0 04 kg 20 kg 15 30 45 60 kg 0 02 kg 10 n MW MAP L 150 kg 0 01 kg 20 kg 0 03 kg 50 kg 0 05 kg M1 50 kg 150 kg 0 1 kg 50 kg 30 70 110 150 kg 0 05 kg 10 n MW MAP L 300 kg 0...

Page 35: ...2 kg M1 2 kg 6 kg 0 004 kg 2 kg 1 5 3 4 6 kg 0 004 kg 10 n MW MAP LCE 15 kg 0 005 kg 5 kg 0 005 kg 5 kg 0 005 kg M1 5 kg 15 kg 0 01 kg 5 kg 3 7 11 15 kg 0 01 kg 10 n MW MAP LCE 30 kg 0 01 kg 10 kg 0 0...

Page 36: ...n MW MAP NCE Weighing Capacity 1 Weighing Capacity 2 6 15 kg 0 002 0 005 kg 5 kg 0 005 kg 5 kg 0 005 kg M1 5 kg 6 15 kg 0 004 0 01 kg 5 2 kg 1 5 3 4 6 7 15 kg 0 004 0 01 kg 10 n MW MAP NCE Weighing Ca...

Page 37: ...02 0 05 kg 20 kg 0 05 kg 50 kg 0 05 kg M1 50 kg 60 150 kg 0 04 0 1 kg 50 20 kg 15 30 45 60 70 150 kg 0 04 0 1 kg 10 n MW MAP NCE Weighing Capacity 1 Weighing Capacity 2 150 300 kg 0 05 0 1 kg 50 kg 0...

Page 38: ...ur Kabelausf hrung Sartorius Hamburg red blue green gray white black z B MP58T rot blau gr n grau wei schwarz Combics 011 blue black white red green gray blau schwarz wei rot gr n grau TEDEA 1510 gree...

Page 39: ...G G G G T R R R R R required resistance in ohms R R R R R 0 Initial resistance in the load cell being adjusted in ohms if not specified in the specification sheet measured between Signal OUT_POS posi...

Page 40: ...R R R R R R 0 x G D R R R R R 1000 ohms x 2 3 kg R R R R R 4 6 ohms G T 500 kg In this example note that the test weight 500 kg is also distributed over the other load cells which means that the weig...

Page 41: ...70 2 70 2 70 2 70 ohms ohms ohms ohms ohms 57004 439 01 3 00 3 00 3 00 3 00 3 00 ohms ohms ohms ohms ohms 57004 440 01 3 30 3 30 3 30 3 30 3 30 ohms ohms ohms ohms ohms 57004 441 01 3 90 3 90 3 90 3 9...

Page 42: ...5 1 6 0 08 0 09 0 16 0 19 0 3 0 4 0 8 1 0 1 6 1 9 2 0 1 0 13 0 20 0 26 0 4 0 5 1 0 1 3 2 0 2 6 2 7 0 13 0 14 0 27 0 29 0 5 0 6 1 3 1 5 2 7 2 9 3 0 15 0 16 0 30 0 32 0 6 0 7 1 5 1 6 3 0 3 2 3 3 0 16 0...

Page 43: ...50 Ohms Initial Resistance Adjusting the Weighing Platform 0 0 5 1 1 5 2 2 5 3 3 5 4 4 5 5 5 5 6 0 0 5 1 1 5 2 2 5 3 3 5 4 4 5 5 1 50 kg 100 kg 200 kg 500 kg 1000 kg 20 kg 20 kg 50 kg 100 kg 1 2 3 200...

Page 44: ...5 5 6 0 0 5 1 1 5 2 2 5 3 3 5 4 1 50 kg 100 kg 1000 kg 500 kg 20 kg 20 kg 50 kg 100 kg 1 2 3 200 kg 4 500 kg 5 1000 kg 6 5 6 4 3 2 200 kg Adjustment resistor in ohms Off center in kg Test load kg Dia...

Page 45: ...ve If Err 340 is still displayed contact your local Service Center Err 341 Flash lost data Turn the scale off and then on again If Err 340 is still displayed contact your local Service Center Err 343...

Page 46: ...r weight on the scale light Inf 23 Error in initializing an application Contact your local Service Center Inf 29 Minimum load not reached Define a lower value for the minimum load in the Application s...

Page 47: ...4 Function is blocked e g menu is locked None Inf 98 No weighing platform connected Connect weighing platform Inf 99 No weighing platform connected Connect weighing platform NO WP No weighing platform...

Page 48: ...menu k k Click on the menu item Setup setup Select Device parameter Setup 1 WP 1 k Click on the menu item Code press key k until the Code appears in the display Code 1 If a password is requested at t...

Page 49: ...2122 Use keys k p _ Saving the service password When the service mode is activated an S appears in the top right hand corner of the display Return to Code in the service mode Code Return to Setup in t...

Page 50: ...eft hand side of the back of the indicator To do this move the switch to the left towards the interface connectors open position Activate the service mode see page 48 49 Select weighing platform and c...

Page 51: ...ating Instructions for a detailed description of the procedure Once you have completed the configuration save the data using the menu item SAVE The A D converter can now be treated like any standard w...

Page 52: ...prior written permission of Sartorius AG The status of the information specifications and illustrations in this manual is indicated by the date given below Sartorius AG reserves the right to make chan...

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