Intercomp ® PT300 Users Manual Intercomp Co. 3839 County Road 116 Medina, MN 55340, U.S.A. (763)-476-2531 1-800-328-3336 Fax: 763-476-2613 www.intercompcompany.
PT300 Users Manual Rev E, April 1999 Table of Contents INTRODUCTION .......................................................................................................................................................3 SPECIFICATIONS .........................................................................................................................................................3 Controls................................................................................................................
PT300 Users Manual Rev E, April 1999 Introduction This manual contains specifications and operating instructions for the PT300 system. Specifications Controls General: Display: On, Off, Print, lb/kg, Test/Zero, Local/Total, Hold/Rel, Lamp 0.5” 6 digit, LCD Electrical Voltage: Batteries: Fuse: 12 VAC,VDC 6 “AA” size alkaline or rechargeable ni-cad batteries Type #1AG1A (little) Performance Accuracy: Divisions: Speed: ±1.0% of applied load or ±1 display graduation, whichever is greater.
PT300 Users Manual Rev E, April 1999 Weights and Measures The PT300 meets or exceeds class IIII standards for 400 division accuracy from 0 lb to 20,000 lb. The certification was completed by the National Type Evaluation Program (NTEP); in accordance with the National Institute of Standards and Technology (NIST) Handbook 44. A NTEP Certificate of Conformance Number 90-106P was issued under the National Conference of Weights and Measures.
PT300 Users Manual Rev E, April 1999 15 ft. interconnecting cable for 6 scales (100490) 15, 25, 15, 25, 15 ft. spacing. Interconnecting cable for 2 scales and splitter box (100533) Additional cable length for scale, printer, or display (100526) Custom cable lengths if more than standard length is necessary. PT300 Dummy pad (100088) Cast aluminum replica. PT300DW Ramp (100072) Battery Operated Tape Printer (100090) Prints weights only.
PT300 Users Manual Rev E, April 1999 Operations Diagram 1: PT 300 Keypad and Display ON Turns the scale on. The scale will test itself by activating all of the segments on the display and then zero itself. Occasionally the display will show EEEE0, this means that the scale is seeking zero. The display stays on EEEE0 while the scale is either in motion or has an unacceptable deadload. OFF Turns the scale off.
PT300 Users Manual Rev E, April 1999 TEST/ZERO This switch will "test" the display by activating all of its segments. It then zeros the scale. See the explanation for the ON button. LAMP This switch will back light the display for night use. The lamps only stay on while the button is being pushed. HOLD/RELEASE When in the hold mode, the scale will constantly display the highest weight applied to it. When in the release mode, the scale shows the actual weight upon it.
PT300 Users Manual Rev E, April 1999 Batteries / Charging This scale can be used while it is charging. Batteries: 6 - 1.2 volt nicads. Battery Life: Approximately 5 years. (1000 charge/discharge cycles). Battery duration between charges: Approximately 8 hours of continuous use before the low battery indicator comes on, and approximately 2 hours after that before the scale shuts itself off. Low Batt. indicator comes on when the battery voltage gets down to approximately 7.3 volts.
PT300 Users Manual Rev E, April 1999 Totalizing and/or Printing Before you attempt to do either of these, a few terms and definitions must be understood. These terms only apply to scales that are cabled together. Master Scale: If more than one scale is being used, the first scale in line is referred to as the Master Scale. Normally these scales have continuous output, If you requested a demand output use the print button on this scale when printing or totalizing.
PT300 Users Manual Rev E, April 1999 Printing Use the print button on the master scale when printing. If more than one scale is being used, put the slave scale(s) in the total mode. This will allow the printer to print the total weight of all the scales. The important thing to remember is that the printer will print whatever is displayed on the last scale in line before the printer.
PT300 Users Manual Rev E, April 1999 Error Messages Ol OlOlEEEE0 Overload. Reduce load to scale. Underload. Re-zero scale. Seeking zero. Wait until reading is displayed. If this error message stays on, the EEPROM may be damaged. Scale will require calibration.
PT300 Users Manual Rev E, April 1999 Cables The following diagrams show the different types of cables that can be used with PT 300 scales. Cables can be ordered consisting of 2-6 connectors so you can match the number of scales your system has. The following diagrams illustrate a 4 scale system. 4 Scale Interconnect Cabling for 4 scales and a printer with the PT 300 supplying the 20 mA current.
PT300 Users Manual Rev E, April 1999 4 Scale Charger-Totalizer Combo 4 scale totalizer cable with battery charger connection.
PT300 Users Manual Rev E, April 1999 4 Scale Totalizer to Printer on Demand 4 scale totalizing cable including 25 pin D-sub connector for a printer or computer Page 14 of 21
PT300 Users Manual Rev E, April 1999 4 Scale PT Charger 4 scale battery charging cable Page 15 of 21
PT300 Users Manual Rev E, April 1999 Current Loop Output to an Intercomp S400 Display: PT300 Connector Pin Designations: PT Circular Connector A: Reserved for future use. B: - Input C: Ground (- Charging Voltage) D: - Output E: +Charging Voltage F: + Input G: Reserved for future use.
PT300 Users Manual Rev E, April 1999 Internal Connector Pin Designations Plug: 1) +Ex (Summing board) 2) +Sig (Summing board) 3) -Sig (Summing board) 4) -Ex (Summing board) 5) GND (Case and pin C on the I/O connector) 6) +Batt (Battery Clip) 7) +Charging (Pin E of I/O Connector) 8) +Input (Pin F on external connector) 9) -Input (Pin B on external connector) 10) +Output (Pin H on external connector) 11) -Output (Pin D on external connector) 12) Unused Receptacle: 1) +Ex (PT board) 2) +Sig (PT board) 3) -S
PT300 Users Manual Rev E, April 1999 WEIGHING PROCEDURES The PT300 or LP600 can be used separately, in pairs, or in groups of 4, 6, or more. They can be used to measure a support load, wheel load, axle load, axle group load or the total weight of a 2 or 3 axle truck in one measuring procedure. Ideally, all wheels of a vehicle should be measured at the same time in order to avoid measuring errors due to the suspension system.
PT300 Users Manual Rev E, April 1999 Table 1: Weighing Combinations Page 19 of 21
PT300 Users Manual Rev E, April 1999 Typical Scale Layouts Notes: Zero key on MASTER scale will tare out all weigh pads that are interconnected. Read total weight of all scales at READ scale.
PT300 Users Manual Rev E, April 1999 How to reach Intercomp Service Things to know: Inform the Service Dept. that the product is a PT300 scale system. When was the PT300 purchased? Where was the PT300 purchased? For Intercomp Service call or fax: FAX # (763)-476-2613 (763)-476-2531 1-800-328-3336 or fill out Service Support Form at : www.intercompcompany.
