Intercomp PT300 Bedienungsanleitung

Intercomp

PT300

Users Manual

Manual #: 700028-E

PT300 Users Manual

Rev E, April 1999

Table of Contents

INTRODUCTION .......................................................................................................................................................3

SPECIFICATIONS.........................................................................................................................................................3

Controls ...............................................................................................................................................................3

Electrical..............................................................................................................................................................3

Performance.........................................................................................................................................................3

Environmental......................................................................................................................................................3

Physical................................................................................................................................................................3

Weights and Measures .........................................................................................................................................4

OPTIONAL EQUIPMENT ..............................................................................................................................................4

OPERATIONS.............................................................................................................................................................6

ON ............................................................................................................................................................................6

OFF...........................................................................................................................................................................6

PRINT.......................................................................................................................................................................6

LB/KG ........................................................................................................................................................................6

LOCAL/TOTAL.......................................................................................................................................................6

TEST/ZERO .............................................................................................................................................................7

LAMP .......................................................................................................................................................................7

HOLD/RELEASE.....................................................................................................................................................7

BATTERIES / CHARGING.......................................................................................................................................8

CHARGING THE BATTERIES ........................................................................................................................................8

TOTALIZING AND/OR PRINTING........................................................................................................................9

Diagram 2: Example of Master/Slave designations............................................................................................9

TOTALIZING...............................................................................................................................................................9

PRINTING .................................................................................................................................................................10

DATA INTERFACE ....................................................................................................................................................10

ERROR MESSAGES ................................................................................................................................................11

CABLES .....................................................................................................................................................................12

4SCALE INTERCONNECT..........................................................................................................................................12

4SCALE CHARGER-TOTALIZER COMBO ..................................................................................................................13

4SCALE TOTALIZER TO PRINTER ON DEMAND ........................................................................................................14

4SCALE PT CHARGER .............................................................................................................................................15

CURRENT LOOP OUTPUT TO AN INTERCOMP S400 DISPLAY:...................................................................................16

PT CONNECTOR PIN DESIGNATIONS:.......................................................................................................................16

INTERNAL CONNECTOR PIN DESIGNATIONS.............................................................................................................17

WEIGHING PROCEDURES...................................................................................................................................18

TABLE 1: WEIGHING COMBINATIONS......................................................................................................................19

TYPICAL SCALE LAYOUTS .......................................................................................................................................20

HOW TO REACH INTERCOMP SERVICE ........................................................................................................ 21

PT300 Users Manual

Rev E, April 1999

Introduction

This manual contains specifications and operating instructions for the PT300 system.

Specifications

Controls

General: On, Off, Print, lb/kg, Test/Zero, Local/Total, Hold/Rel, Lamp

Display: 0.5” 6 digit, LCD

Electrical

Voltage: 12 VAC,VDC

Batteries: 6 “AA” size alkaline or rechargeable ni-cad batteries

Fuse: Type #1AG1A (little)

Performance

Accuracy: ±1.0% of applied load or ±1 display graduation, whichever is greater.

Divisions: 20,000 lb / 9350 kg: Graduation = 50 lb / 25 kg

Speed: ≈1 sec to typical reading (static)

Environmental

Temperature: Operating: -20°F to 150°F / -28°C to 65°C

Storage: -40°F to 170°F / -40°C to 75°C

Humidity: 10 – 95% non-condensing

Physical

Dimensions: Overall: 3 x 16 x 20 in. / 76 x 406 x 508 mm

Pad: 12 x 12 in. / 304 x304 mm

Weight: 37 lb / 16.8 kg

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.

Optional Equipment

120V Charger and Cable (100480)

120V plug in transformer with cable and PT connection.

220V Charger and Cable (100481)

220V plug in transformer with cable and PT connection.

120V Charging transformer (100545)

Plug in transformer providing DC output to charge scale.

220V Charging transformer (100546)

Plug in transformer providing DC output to charge scale.

1200 Baud Current Loop Output (100084)

Necessary if interconnecting scales, a scale to printer or a scale to remote display.

2 scale carrying case (100047)

4 scale carrying case (100048)

6 scale carrying case (100049)

15 ft. cable to printer or display (100537)

15 ft. cable to single scale (100538)

15 ft. interconnecting cable for 2 scales (100488)

Interconnecting cable for 4 scales (100489)

15, 25, 15 ft. spacing.

15 ft. interconnecting cable for 6 scales (100490)

15, 25, 15, 25, 15 ft. spacing.

PT300 Users Manual

Rev E, April 1999

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.

Battery Operated Portable Computer/Tape Printer (100091)

Prints Axle, Axle Group, Total weight, Time and Date, etc.

2 Channel Splitter Box (100092)

Necessary for printing axle weights with 4 scales. Part #100533 is also needed for

every set of 2 scales to be interconnnected.

3 Channel Splitter Box (100089)

Necessary for printing axle weights with 6 scales. Part #100533 is also needed for

every set of 2 scales to be interconnnected.

Interconnecting/Charging Cable:

120V 220V

2 scale 100496 100497

4 scale 100498 100499

6 scale 100500 100501

2 Channel Indicator w/ Charger and Cables (100085)

4 Channel Indicator w/ Charger and Cables (100086)

6 Channel Indicator w/ Charger and Cables (100087)

PT300 Users Manual

Rev E, April 1999

Operations

Diagram 1: PT 300 Keypad and Display

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.

If cabled for a demand output, this button transmits data via a cable to another scale,

printer, display, etc..

lb/kg

Converts the weight on the scale from pounds to kilograms or vice versa. The

indicating bars on the right side of the display indicate which mode the scale is in.

LOCAL/TOTAL

If more than one scale is cabled together, the scales can display the actual weight they

are seeing (local), or the sum total weight of two or more scales (total). The indicating

bar on the upper left side of the display is off when in the local mode, and on when in

the total mode.

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. The

indicating bar on the lower left side of the display is on when in the hold mode, and off

when in the release mode.

The indicating bar next to Bat comes on when the batteries are getting low. The scale

will continue to operate correctly for approximately two hours before shutting itself off.

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.

Automatic Shutoff: The scale turns itself off when the battery voltage gets down to

approximately 6.3 volts.

Charging Voltage: 11.5 volts - 14.5 volts DC. Protection is provided for accidental

reversal of the charging connections.

Charging Current: Starts at approximately 300mA and drops down to 50mA

after 8 hours.

Charging Time: 8 hours if the batteries are discharged to the point

of turning off the scale.

WARNING: Do not plug the charger in while there are standard alkaline cells

inside. This could result in damage to the batteries and your scale.

Charging the batteries

The batteries can be charged using 120v AC or 11.5V - 14.5V DC. For AC charging

use the plug in transformer provided. Connect the black lead from the charging cable

to the (-) terminal and the red lead to the (+) terminal.

For DC charging, connect the red lead to positive voltage and the black lead to

ground.

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.

Slave Scale: If more than one scale is being used, any scale that is not the

master scale is referred to as a Slave Scale.

Master Slave Slave Slave

scale A scale B scale C scale D Printer

Diagram 2: Example of Master/Slave designations

The master and slave designations are determined by the cable and not the scale itself.

The cable also determines if the scale transmits data on demand (when the print button

is pushed) or continuously. If continuous, the print button doesn't have to be activated

to totalize or print. Please refer to the cabling diagrams

Totalizing

When more than one scale is being used, the last one in line can be used to show the

total weight of all the scales added together. To totalize, turn on the scales in

sequential order starting with the master scale (“scale A") and make sure all of the

slave scales are in the total mode. The indicating bar on the upper left side of the

display is on when in the total mode. This does not mean that the scale is receiving;

only that it is capable of receiving.

If transmitting on demand, press the print button on the master scale and the last scale

in line (slave scale D in the diagram) will show the total weight of all the scales.

Example: Scale A will display the total of A only.

Scale B will display the total of A + B.

Scale C will display the total of A + B + C.

Scale D will display the total of A + B + C + D.

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.

In addition to the weight, the printer will print a letter that signifies the number of scales

that it printed the weight from.

i.e. The letter A signifies the weight is from one scale. The letter B signifies the weight

is from two scales etc..

Data Interface

Serial ASCII

20 mA current loop, active or passive. (The PT300 supplies the current for active

current loop, and an external current is used for passive current loop. Passive is

preferred for longer battery use between charges.)

1200 Baud

8 data bits

1 start bit

2 stop bits

no parity

M Kg

Transmission Format: A_O_-XXXXXXX._Lb<CR><LF>

Format explanation: A = Scale code (Signifies the scale, could be

A for scale A, B for scale B etc..)

Space

M,O,Z = Error code (M = motion, O = over-capacity,

Z = zero, space = no error)

Space

Minus sign if negative, space if positive.

8 data bits

Space

Pounds/Kilograms

Carriage return

Line feed

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