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ZT-1 User’s Manual – Operation

DOC #18172 Page 26

4) Install Shunt Resistor provided with each load cell, enclosed in calibration data report

plastic cover.

5) Balance the load cell to zero.

•

Adjust the ZERO pot until digital voltmeter shows 0.000 volts.

Note: Measure output voltage with a digital voltmeter across the OUT and COM
terminals (see Figure 13).

6)

•

Set the mode switches to AZ OFF, PRB, PEAK, and ZERO.

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Summary of Contents for ZT-1

Page 1: ...ZT 1 Load Module User s Manual For Pre calibrated Load Cells or other Load Cell use Revision A...

Page 2: ...ZT 1 User s Manual Installation DOC 18172 Page 2...

Page 3: ...ZT 1 User s Manual Installation DOC 18172 Page 3 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 4: ...n Sheets 2 Form 1224 35 Table of Figures Figure 1 Mounting Dimensions 10 Figure 2 DC Power Wiring 11 Figure 3 Built In 1M Ohm Shunt Resistor Wiring Error Bookmark not defined Figure 4 External Shunt R...

Page 5: ...ington CT 06111 Office 860 953 0588 The express warranty set forth herein is in lieu of all other warranties expressed or implied including without limitation any warranties of merchant ability or fit...

Page 6: ...age outputs Also simultaneously provides the associated 0 20mA current outputs Built in threshold trigger simplifies installation External probe trigger can also be used when situation required LED ba...

Page 7: ...ZT 1 User s Manual Installation DOC 18172 Page 7 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 8: ...0mA Circuit Inaccuracy 1 of full scale max Circuit Non linearity 02 of full scale max Auto Zero Time constant 10 seconds DIP switch selectable Frequency Response DC to 5 000 Hz Speed Limit 2000 SPM ma...

Page 9: ...ZT 1 User s Manual Installation DOC 18172 Page 9 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 10: ...ZT 1 User s Manual Installation DOC 18172 Page 10 Installation Mounting the ZT 1 The ZT 1 is designed to clip onto standard top hat DIN rail TH 35 7 5 or TH 35 15 Figure 1 Mounting Dimensions...

Page 11: ...r is connected to the ZT 1 as shown in Figure 2 Figure 2 DC Power Wiring Notes 1 The 24VDC source can be in range from 18VDC to 32VDC 2 It is important to connect an Earth Ground to the GND terminal 3...

Page 12: ...ad Cells Shunt resistor only works directly with the Strain Gage Wheatstone bridge type load cells and sensors User specified external shunt resistor value is indicated on calibration data report Figu...

Page 13: ...fic load cell wire color code refer to Load Cell Specifications Color Code wire designation may be different than shown in Figure 4 6 3 The Phoenix plug can then be inserted back into its socket Confi...

Page 14: ...ZT 1 User s Manual Installation DOC 18172 Page 14 Figure 4 Strain Gage Sensor Input...

Page 15: ...ure 5 below Be sure not to nick any of the signal conductors or cut the braid shield Figure 5 Strain Gage Sensor Cable Stripping 2 Strip approximately of insulation from each of the four signal conduc...

Page 16: ...on B Sensors Connection The ZT 1 accepts the signals from all strain gage load cells and sensors Figure 6 illustrates the sensor connections Figure 6 Typical Load Cell Wiring To be more specific refer...

Page 17: ...top of the unit and wire the sensor cable as shown 2 The Phoenix plug can then be inserted back into its socket Configuration 1 Set the V C dip switch to C position for current output sensor 20mA out...

Page 18: ...ZT 1 User s Manual Installation DOC 18172 Page 18 Figure 7 20mA out Sensor Input...

Page 19: ...gure 8 Analog Voltage Output Wiring Output details OUT terminal outputs either Peak tonnage or Track tonnage depending on the TRK PEAK switch setting on the front panel REV terminal outputs the revers...

Page 20: ...e analog current output is provided on a Phoenix connector for easy access and for interfacing with other peripherals Figure 9 Analog Current Output Wiring Output details OUT_C terminal outputs either...

Page 21: ...EAK TRK_C terminal always outputs the track tonnage regardless of the front panel TRK PEAK switch Triggering Internal Threshold The ZT 1 can be triggered by an internal threshold value When this trigg...

Page 22: ...l Installation DOC 18172 Page 22 Figure 10 Internal Threshold Wiring The probe PRB indicator should turn on when the load rises above the threshold value and turn off when the load falls back below th...

Page 23: ...external probe signal If an external probe is used the probe supply voltage 24VDC is provided by the ZT 1 The figure below illustrates the wiring for a variety of sensing devices Figure 11 Probe Input...

Page 24: ...ss With a consistent zero value the tonnage output readings should remain accurate When the probe turns on the ZT 1 opens the window to read a load signal In peak mode the load level rises to the high...

Page 25: ...of calibration Pre calibrated systems When installing be sure to match up the specific load cell model number and serial number to the specified ZT1 serial number indicated on corresponding calibrati...

Page 26: ...ll enclosed in calibration data report plastic cover 5 Balance the load cell to zero Adjust the ZERO pot until digital voltmeter shows 0 000 volts Note Measure output voltage with a digital voltmeter...

Page 27: ...e as cal Number VDC If no calibration data report adjust gain pot to desired output voltage eg 7 0 VDC Repeat steps 5 7 until the correct voltages are achieved For example 7 0V 10 0 VDC is the maximum...

Page 28: ...itches to AZ OFF PRB OFF TRACK and ZERO as shown and verify that the sensor is at zero Set the ZRO GAIN switch to GAIN and use a digital voltmeter to measure the voltage across the OUT and COM termina...

Page 29: ...r s Manual Operation DOC 18172 Page 29 9 Calibration complete Fill in the Calibration Card a sample shown below which is located in the side pocket Set mode switches as shown Figure 14 Calibration Car...

Page 30: ...us use This section details the setup for Peak Mode and Track Mode operations I Peak Mode operation In Peak Mode the output will increase to the highest load level and remain at that voltage until the...

Page 31: ...2 Page 31 2 Skip this step if Auto Zero is not needed a Toggle the OFF AZ switch to AZ to start Auto Zero b When Auto Zero is done only the 2 yellow LEDs at 0 0V are lit 3 Set the OFF PRB switch to PR...

Page 32: ...the load on the machine increases and decreases 1 Set the Mode Select Switches to AZ OFF PRB OFF TRK and ZRO as shown above If Auto Zero is not needed it is done Skip the following steps 2 If Auto Zer...

Page 33: ...ZT 1 User s Manual Operation DOC 18172 Page 33 3 Set the OFF PRB switch to PRB...

Page 34: ...ZT 1 User s Manual Operation DOC 18172 Page 34...

Page 35: ...ZT 1 User s Manual Appendix DOC 18172 Page 35 Appendix A Sensor Installation Doc 11080 B Calibration Sheets 2 Form 1224...

Page 36: ...ZT 1 User s Manual Appendix DOC 18172 Page 36 THIS PAGE INTENTIONALLY LEFT BLANK...

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