TPG DPM-3221 User Manual Download Page 5

 

   

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Setting the Shunt rating of the DPM 

 

If you want to change the DPM shunt rating to match your shunt, proceed as follows: 
 

1.  After checking the DPM is in good order, power down the unit – if necessary, unplug the phone jack from 

the interconnector.  

2.  Plug in the supplied external power plug into the 5V-GND-RC socket. A 9V battery connected to the 

positive (red) wire and negative (black) wire is best to power the unit whilst the shunt rating is being set. 

3.  Power up the unit and when the “External Shunt” is displayed, press and hold the reset button for 3 

seconds. 

4.  Release the reset button and note that the LCD will show the current DPM shunt setting. Fig. 1. 
5.  A quick press on the Reset Button will cycle the shunt setting from 100A to 200 A. Press again for 50A 

and again to go back to 100A. Fig. 1, 2 and 3. Select the required shunt setting in this way. 

6.  Make a quick connection of the black (GND) and white (RC) wires to confirm the currently displayed  

shunt setting and the LCD will then show the normal data display. Fig. 4. 

7.  Power down the unit and power up again and verify that the “External Shunt” is set correctly. 
8.  Plug the phone jack into the new shunt and check that the readings are correct. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for DPM-3221

Page 1: ...the last set of data values Ah Wh peak Current peak Watts and sometimes min and peak Voltage is retained and displayed when the DM 3221 is powered up A new group of data up to 20 is created each time...

Page 2: ...of external DC source RC Remote Clear this is for deleting the stored data and setting the shunt rating 4 Phono Socket for connection to optional Data Adapter DPA 3051 5 Reset Switch To clear saved d...

Page 3: ...er and check that the DPM powers up If no display appears then check for reverse polarity and ensure that the voltage is greater than 5 Volts 2 The last set of accumulated data will appear on the LCD...

Page 4: ...tage Vp Minimum Voltage Vm The Volts value is the average voltage over the last screen update interval Vp is the Peak maximum voltage from the source side since start up to the present time Similarly...

Page 5: ...when the External Shunt is displayed press and hold the reset button for 3 seconds 4 Release the reset button and note that the LCD will show the current DPM shunt setting Fig 1 5 A quick press on the...

Page 6: ...isplay indicates Press again 5 seconds to reset then release the Reset button and press again holding for 5 seconds to delete the data 2 Use the external power source socket and connect the remote I O...

Page 7: ...rrent Am Peak Watt Wp The new high and low values of voltage and current will replace the old ones during the metering period and registered at the end of the metering period Accumulative Max Operatio...

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