Transcell Technology PC 150 Service Manual Download Page 12 | Manualshive

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5-2

5.2 PC-150

Tools Required:

5 mm Allen Wrench

Phillips Head Screwdriver

1. Remove the scale platter (1) and set aside.

2. Using the 5 mm Allen wrench, remove the [2] load cell mounting bolts (2).

3. Lift off the sub-platform assembly and aluminum spacer (3), and set aside.

4. Remove the [4] mounting screws (5) for the splash plate (4) and set aside.

5. Lift off the splash plate and set aside.

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Summary of Contents for PC 150

Page 1: ...North American Service Manual MODEL PC SERIES Version 2 March 25 1997 Revision B1 1 April 4 2000 Prepared by TRANSCELL TECHNOLOGY INC ...

Page 2: ...play Key Board Assembly 7 1 Appendix A Technical Specifications A 1 Appendix B Serial Data Formats Information B 1 B 1 Serial Data Formats B 1 B 1 1 Serial Data Formats Overview B 1 B 1 2 Consolidated Controls Demand Format B 1 B 1 2 1 Recognized Host Commands B 1 B 1 3 Consolidated Controls Continuous Format B 2 B 1 4 Toledo 8213 Demand Format B 3 B 1 4 1 Recognized Host Commands B 3 B 1 5 NCI 38...

Page 3: ...s Demand Weigh Data Record B 1 B 2 Consolidated Controls Continuous Weigh Data Status Record B 2 B 3 Toledo 8213 Demand Weigh Data Record B 3 B 4 Toledo 8213 Demand Status Record B 3 B 5 NCI 3800 Triner Demand Weigh Data Record B 4 B 6 NCI 3800 Triner Demand Status Record B 4 B 7 NCI 3800 Triner Demand Invalid Command Record B 4 B 8 Transcell Technology Demand Weigh Data Record B 5 B 9 Transcell T...

Page 4: ...cement should be done by factory authorized personnel only The PC Series has three ranges of weight capacities The PC 30 is a 30 lb 15 kg scale the PC 70 is a 70 lb 30 kg and the PC 150 is a 150 lb 70 kg scale PC 70 MODEL ZERO kg lb GROSS NET TARE PRINT Transcell Technology inc CLASS 1500 max n III CAPACITY 70 x 0 05 lb 30 x 0 02 kg Temp Range 0 to 40 C ZERO TARE NET GROSS STABLE lb kg FIGURE 1 1 ...

Page 5: ... as follows 1 Referring to Figure 2 1 locate the calibration switch on the back of the scale 2 Replace the calibration switch cover by securing with the two drilled head screws 3 Thread a wire security seal through the openings in both drilled head screws This prevents access to the calibration switch Refer to Figure 2 2 for more detail Calibration Switch Figure 2 1 Location of Calibration Switch ...

Page 6: ...g In Order Of Appearance Do the Keys Work YES 1 Check Display Cable NO Try The Following In Order Of Appearance 1 Check for proper AC Adapter Voltage Is the Scale Stable YES 2 Check environment NO Try The Following In Order Of Appearance 1 Check for platform obstruction i e ovld stop Is the Scale Linear YES 2 Replace load cell if zero offset count too high CALL TRANSCELL STOP A A 1 Try re calibrat...

Page 7: ...4 1 CHAPTER 4 ILLUSTRATED PARTS LIST 4 1 PC 30 AND PC 70 1 2 4 3 5 ...

Page 8: ...d Cell FAD 20 PC 30 2 1 211040045 Load Cell FAD 45 PC 70 3 1 380190036 Bottom Spacer Aluminum 4 1 380190037 Top Spacer Aluminum 5 4 380190013 Adjustable Foot 1 250116237 AC Adapter 12 VDC 500 mA 1 ITEM QTY PART NO DESCRIPTION 1 1 215193811 Main Board Assy 1 215366100 Display Key Board Assy ...

Page 9: ...4 3 4 2 PC 150 5 6 7 1 3 ...

Page 10: ... DESCRIPTION 1 1 380190008 Stainless Steel Platform 3 1 380360001 Top Spacer Aluminum 5 1 211040100 Load Cell FAD 100 6 1 380360007 Bottom Spacer Aluminum 7 4 380190013 Adjustable Foot 1 250116237 AC Adapter 12 VDC 500 mA ...

Page 11: ... scale platter 1 and set aside 2 Using the 5 mm Allen wrench remove the 2 load cell mounting bolts 2 3 Lift off the sub platform assembly 3 and set aside 4 Remove the 4 mounting screws 5 for the splash plate 4 and set aside 5 Lift off the splash plate and set aside 1 3 4 2 5 Figure 5 1 Opening up the PC 30 and PC 70 Base Unit ...

Page 12: ...e scale platter 1 and set aside 2 Using the 5 mm Allen wrench remove the 2 load cell mounting bolts 2 3 Lift off the sub platform assembly and aluminum spacer 3 and set aside 4 Remove the 4 mounting screws 5 for the splash plate 4 and set aside 5 Lift off the splash plate and set aside ...

Page 13: ...5 3 1 2 3 4 5 Figure 5 2 Opening up the PC 150 Base Unit ...

Page 14: ...D SCALE TXD RED BLK RED Setup Switch On Off Switch 1 2 LED RED GRN BLK WHT 1 2 3 4 E S E S J8 2 1 Ferrite Bead Core Ferrite Bead Core J3 1 2 3 4 J2 Female 14 PIN CENTRONICS TO REMOTE DISPLAY KEY UNIT PC 30 1 2 3 4 5 6 7 8 9 10 10 9 8 7 6 5 4 3 2 1 PC 70 ONLY Display Key Board Assy PC 150 only Figure 6 1 PC Series Chassis Wiring Diagram ...

Page 15: ...a fixed gain of 100 Op amp U10 B forms a low pass filter to prevent unwanted noise from entering the circuit The other half of U10 U10 A provides a buffered reference voltage for op amp U11 The A D converter U1 is a dual slope type converter Timing is controlled by the microcontroller Microcontroller U2 executes several functions including A D fetch digital signal conditioning key scan serial comm...

Page 16: ...IGITAL SPECIFICATIONS Microcontroller Intel 80C32 Program Memory 32K x 8 external to µC EEPROM 64 x 16 external to µC SERIAL COMMUNICATIONS RS 232 Full Duplex Selectable Baud Data Bits and Parity OPERATOR INTERFACE Display 6 Digit 0 56 7 segment LED Display Keyboard 5 key Tactile Keypad POWER AC Adapter 12 VDC 500mA ENVIRONMENTAL Operating Temperature 41 F 0 C to 95 F 40 C Storage Temperature 4 F ...

Page 17: ...equired For Continuous types host control is not required but not restricted either In this type the scale automatically transmits a weigh data status record out of the serial port at the end of each display update Continuous types are used to interface to computers scoreboards and other remote devices requiring constant data updating Host commands although not required are accepted and acted upon...

Page 18: ...ponse from the scale The host must issue a P command to determine if the command was processed by the scale N This command is sent to the scale to revert to net The scale will disregard this command if the scale is in motion positive overload or negative overload The scale will also disregard this command if it is not in gross mode or a tare has yet to be established Even if successful the host re...

Page 19: ...tion Always 1 Always 1 B5 B4 B3 B2 B1 B0 Out of range Motion See Table STATUS BYTE TABLE FIGURE B 4 Toledo 8213 Demand Status Record B 1 4 1 RECOGNIZED HOST COMMANDS These commands are issued from the host to the scale and are single ASCII characters W This command is sent to the scale to print the indicated display The scale will respond with the status record if the weight is less than zero or t...

Page 20: ...le LSB Low Status Byte See Table CR 4 Carriage Return ETX End of Transmission Not Used Bit Function B3 B2 B1 B0 Over capacity Under capacity 1 True Low Status Byte Table 1 True Not Used 1 Insert SP for Triner 2 Insert SP for NCI LB KG 4 Insert LF for NCI Units 3 LB pound KG kilogram 3 Use lower case for NCI FIGURE B 5 NCI 3800 Triner Demand Weigh Data Record LF HSB Line Feed High Status Byte Same ...

Page 21: ... s front panel If the weigh data is invalid the scale sends the status record shown in Figure B 9 See section below for more information STX XXXX XXX UNITS GR NT CR LF Polarity Positive Negative Weight digits Units lb pound kg kilogram Gross Net GR Gross NT Net Start Transmission Carriage Return Line Feed SP SP Space Space with leading zero suppression ETX End Transmission FIGURE B 8 Transcell Tec...

Page 22: ...P command to determine if the command was processed by the scale N This command is sent to the scale to revert to net The scale will disregard this command if the scale is in motion positive overload or negative overload The scale will also disregard this command if it is not in gross mode or a tare has yet to be established Even if successful the host receives no response from the scale The host ...

Page 23: ...ty SP Positive Negative Weight digits Start Transmission SP SP Space Space with leading zero suppression ETX End Transmission XX X Weight digits OZ SP Status Byte M Motion C Over CHK1 CHK2 Space Checksum Byte 1 Checksum Byte 2 FIGURE B 11 Detecto Weigh Data Status Record B 1 8 1 RECOGNIZED HOST COMMANDS These commands are issued from the host to the scale and are single ASCII characters This comma...

Page 24: ...he zero reset range Even if successful the host receives no response from the scale The host must issue a CR command to determine if the command was processed by the scale T This command is sent to the scale to tare the scale The scale will disregard this command if the scale is in motion positive overload or negative overload The scale will also disregard this command if it displaying a negative ...

Page 25: ...command is sent to the scale to toggle among the configured units Even if successful the host receives no response from the scale The host must issue a CR command to determine if the command was processed by the scale ...

Page 26: ...C 1 APPENDIX C CIRCUIT DIAGRAMS Please see attached schematic diagram sheets ...

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