Cardinal 758 Operation Manual

Weight indicating instrument

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758 & 758S
Weight Indicating Instrument
Operation Manual
8555-M021-O1 Rev I
PO BOX 151 WEBB CITY, MO 64870
Printed in USA
10/00
PH 417-673-4631
FAX 417-673-5001
http://www.cardinalscale.com

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Summary of Contents for Cardinal 758

  • Page 1 758 & 758S Weight Indicating Instrument Operation Manual 8555-M021-O1 Rev I PO BOX 151 WEBB CITY, MO 64870 Printed in USA 10/00 PH 417-673-4631 FAX 417-673-5001 http://www.cardinalscale.com...
  • Page 2 TABLE OF CONTENTS Thank you for your purchase of our Cardinal ....... .
  • Page 3 This bracket may be removed or left in place for desktop use. Regardless of how and where you mount your 758, it should be in a safe area where it will not be in the way of normal traffic. The location chosen should be free of temperature extremes and water.
  • Page 4 GROUND LUG Batteries The 758 can use six (6) "C" size Alkaline, Ni-Cad or Nimh batteries (not included). If you wish to operate the 758 from batteries, you must first obtain and install batteries before operations can begin. The batteries are contained in a battery holder inside the instrument. Access is via a removable panel on the back of the indicator.
  • Page 5 Refer to Figure No. 3 for illustration of battery installation. After placing all six (6) of the batteries in the holder, replace the panel on the back of the 758 (slide under the end cap) and install the two (2) screws. Make sure the wall plug-in power supply is unplugged, then turn the indicator over (display facing up) and press the ON | OFF key.
  • Page 6 Serial I/0 Connection Your Model 758 has a RS-232 serial port that may be connected to a printer to record weight and associated data or it may be connected to a remote display (like the SB-80) or to a computer for transmission of weight data.
  • Page 7 PC=0 (0=NO) during setup and calibration of the instrument, and the 758 is connected to a computer, it will transmit a single set of weight data each time the computer sends an ENQ (hex 05). This is known as Weight-On-Demand. An example and explanation of the data format transmitted is shown below.
  • Page 8 758's keyboard. Pressing the PRINT key will cause the data entered or displayed to be retained and the 758 will advance to the next prompt. The cursor location is identified by the blinking character and can be advanced to the right to the next position by pressing the UNITS key.
  • Page 9 Automatic Zero Tracking Range. This is the value in scale divisions that will be automatically zeroed off. For example, if the scale divisions are 0.5 and the zero tracking is set to 3, the 758 will automatically zero weights of 1.5 or less. Values of one (1) through nine (9) divisions are available for the zero tracking range, or select ten (10) if 0.5 division zero tracking range is...
  • Page 10 ZERO key to select the number (1 through 9) of minutes (time approximate) of inactivity before turning the 758 off. A zero (0) disables the Automatic Shutoff feature. Press the PRINT key to save the setting. Note: This setting may be revised without having to enter the calibration mode.
  • Page 11 END-OF-PRINT LINE FEEDS To enter the setup review mode, simply turn the 758 off then press and hold the PRINT key then press the ON key. The display will then prompt for entry of the power up zero feature PUO= PUO=.
  • Page 12 SETUP and CALIBRATION, Cont. 1. Press ON | OFF key to turn off. If Filtering=0, 1 or 2 then 2. Remove calibration jumper J1. If Filtering=3 then 3. Press ON | OFF key to turn on. Filter Level Interval 1 to 16 i n t = 1,2 or 5 Break Range...
  • Page 13 ( I ) ON (O) OFF KEY With the 758 off, pressing this key will apply power to the instrument and turn on the display. If the 758 is already on, pressing this key will display OFF OFF and remove power from the instrument.
  • Page 14 ERROR AND STATUS DISPLAYS The 758 is equipped with a diagnostic software program that tests various portions of the instrument's circuitry and verifies proper operation. Should a problem be detected, an error or status message will be displayed alerting the operator to that condition.
  • Page 15 BEFORE YOU CALL FOR SERVICE The 758 has been designed to provide you with years of trouble-free operation. In spite of this, troubles sometimes happen. Before calling for service assistance you should make some initial checks to verify that a problem does exist. The following describes several types of symptoms along with suggested remedies.
  • Page 16 CALIBRATION SEAL INSTALLATION If your Model 758 Weight Indicating Instrument is used in a commercial application it must be tested and sealed by your local weights and measurement official. The 758 is designed to accept a lead and wire security seal to prevent unauthorized access to the calibration adjustments.
  • Page 17 NEMA 4X ENCLOSURE Installation Instructions The Model 758 in a NEMA 4X enclosure can be 8.00" mounted on either a horizontal or vertical surface. The enclosure is attached to the wall using the gimbal stand. Refer to Figure No. 11 for the hole layout for the gimbal stand.
  • Page 18 Figure No. 14 Voltage Selection The 758 in a NEMA 4X enclosure is shipped from the factory configured for 115 VAC 50/60 Hz operation with a 1/10 ASB fuse installed and the Voltage Selection jumpers (J1) installed on pins 1 & 2 and 3 & 4. On installations requiring 230 VAC 50/60 Hz, a Voltage Selection jumper must be moved to pins 2 &...
  • Page 19 RS-232 Serial Cable Installation 1. Loosen the cable gland connector(s) for the RS-232 serial cable. The gland connector(s) for the RS-232 serial data are located on the back of the enclosure. Refer to Figure No. 12 for an illustration of the gland connector layout. 2.
  • Page 20 If you receive the indicator attached to a scale, calibration is not necessary. If the 758 is being connected to a scale for the first time or recalibration is necessary for other reasons, proceed as indicated.
  • Page 21 SEALING TAB 8539-B014-0A LOAD CELL CABLE 8555-B014-0A POWER CORD CABLE 8555-B015-08 ANALOG & SERIAL CABLE 8555-C143-0A FRONT COVER 8555-C144-08 REAR PANEL 8555-C146-08 DISPLAY STAND 8555-C147-08 END CAP 8555-D001-08 KEYPAD 8555-D031-0A MAIN PCB BOARD ASSEMBLY not shown 8555-C107-08 758 INDICATOR VINYL COVER...
  • Page 22 758S PARTS IDENTIFICATION Figure No. 20...
  • Page 23 8555-D066-0A ASSEMBLY: ENCLOSURE, REAR 8555-D067-0A ASSEMBLY: ENCLOSURE, FRONT 8558-D010-08 GIMBAL FOR 708 / 758S 8555-C063-0A BEZEL FOR 758S 8555-D031-1A BOARD ASSEMBLY - 758 8555-D055-08 758S KEYPAD 8555-B064-08 GASKET FOR 758S ENCLOSURE 8555-C050-0A POWER SUPPLY BOARD ASSEMBLY 8555-C060-0A ENCLOSURE FRONT 8555-B053-0A...

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