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PRECISION DIGITAL Helios PD2-6100, Instruction Manual

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PRECISION DIGITAL Helios PD2-6100 Instruction Manual Download Page 14

 

Helios Large Display Strain Gauge Meter Instruction Manual 

PD2-6100

 

 

14 

 

 

Strain Gauge Connections 

The following figures show examples of strain gauge connections. 

There is a 5-position DIP switch (CONFIG) to set up the input ranges and ratiometric operation.   

NOTE:

 

Refer to Switch Configuration starting on page 13 for proper switch positioning for the 

following wiring configurations. 

 

Figure 10. Strain Gauge Powered by 

Internal Supply 

 

Figure 11. Strain Gauge Powered by 

External Supply 

When connecting multiple strain gauges to the meter, each must be wired in parallel. This is typically 

done with the use of a junction box. 

 

Figure 12. Multiple Strain Gauges Connected Through Junction Box 

 

 

EX+

COM

F4

SG+

SG-

INPU T SIGNA L

EX+

EX-

SG-

SG+

EX-

EX+

EX-

SG-

SG+

EX+

SG-

SG+

Up to 12

Load Cells

EX-

Junction Box

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Summary of Contents for Helios PD2-6100

Page 1: ...150 250 mV Bipolar Input Ranges Selectable 5 or 10 VDC 350 mA Maximum Sensor Excitation Supports up to Twelve 12 350 Load Cells Capture or Programmable Tare Feature Max Min or Peak Valley Hold Featur...

Page 2: ...loss Anyone using this product for such applications does so at their own risk Precision Digital Corporation shall not be held liable for damages resulting from such improper use Limited Warranty Prec...

Page 3: ...6 Relay and Alarm Operation Diagrams 37 High Alarm Operation Set Reset 37 Low Alarm Operation Set Reset 37 High Alarm with Fail Safe Operation Set Reset 38 Low Alarm with Fail Safe Operation Set Reset...

Page 4: ...p to twelve 12 350 load cells minimum load resistance of 28 making it ideal for multipoint weight measurement applications It also features large 1 8 inch superluminous LED digits which can be read fr...

Page 5: ...of ten years if power is lost Fuse Required external fuse UL Recognized 5 A max slow blow up to 6 meters may share one 5 A fuse Normal Mode Rejection Greater than 60 dB at 50 60 Hz Isolation 4 kV inp...

Page 6: ...9 9 seconds on off relay time delays Programmable and independent for each relay Fail Safe Operation Programmable and independent for each relay Note Relay coil is energized in non alarm condition In...

Page 7: ...To be used as pull up for digital inputs only Connect normally open pushbuttons across 5 V DI 1 4 WARNING DO NOT use 5 V terminal to power external devices Compliance Information Safety UL C UL Liste...

Page 8: ...out holes located on the bottom of the meter There are a total of four pre drilled conduit entry holes located at the bottom of the meter If the need to drill additional holes arises make sure you wil...

Page 9: ...g a drill bit slightly smaller than the girth of the mounting screws pre drill holes at the mounting locations previously marked 3 Insert mounting screws into the four mounting holes and screw them in...

Page 10: ...re the mounting plates to the top and bottom for vertical pipes or left and right for horizontal pipes of the reverse side of the meter enclosure using the provided fasteners Do not overtighten the fa...

Page 11: ...see diagram below 4 Flip this switch into the appropriate position for the required transmitter excitation Figure 6 Sensor Excitation Voltage Selection Connections All connections are made to screw t...

Page 12: ...of the power terminal block Doing so will disable the onboard digital I O RS 485 serial communications and M Link functionality Figure 7 Connector Labeling for Fully Loaded PD2 6100 Power Connections...

Page 13: ...Input Menu Shunt Resistor Switch 5 The PD6100 provides a means of simulating strain in a strain gauge bridge circuit via a 60 4K shunt resistor included in the meter This will simulate an approximate...

Page 14: ...ning for the following wiring configurations Figure 10 Strain Gauge Powered by Internal Supply Figure 11 Strain Gauge Powered by External Supply When connecting multiple strain gauges to the meter eac...

Page 15: ...TU Serial Communications Serial communications connection can be made to the onboard RS485 terminal block or USB connector shown in Figure 7 If RS232 is required an RS485 to RS232 adapter PDA7485 may...

Page 16: ...gital RC networks are available from Precision Digital and should be applied to each relay contact switching an inductive load Part number PDX6901 Note Relays are de rated to 1 14th HP 50 watts with a...

Page 17: ...or 2 stop bits To change the meter address 1 Press and hold the Menu button for three seconds to access Advanced Features menu of the meter 2 Press Up arrow until Serial SEriaL menu is displayed and...

Page 18: ...e 20 details the wiring connections from the RS 485 connector to an RS 422 485 serial converter such as the PDA7485 or PDA8485 for a four wire network Three Wire Connection In order to wire the 5 pins...

Page 19: ...VDC block Digital output connections are made by wiring from the appropriate digital output block to the grounding terminal block Figure 22 Digital Input and Output Connections F4 Digital Input Conne...

Page 20: ...ature As the name implies the interlock relay feature reassigns one or more alarm control relays for use as interlock relay s Interlock contact s are wired to digital input s and trigger the interlock...

Page 21: ...ertified to NIST standards Overview There is a 5 position DIP switch used to set the meter input selection See Figure 9 on page 13 to setup the switch Setup and programming is done through the program...

Page 22: ...Relay interlock switch open Note F4 F8 are digital inputs Note LEDs for relays in manual mode flash with the M LED every 10 seconds M flashing by itself indicates Aout manual control is used Press th...

Page 23: ...MAINSTAL 3 Double click on the file named MAStart The program will open a few windows and install two programs on your computer Simply follow the onscreen instructions until you see one of the dialog...

Page 24: ...Dec pt Decimal point Set decimal point Pv 1 PV1 PV1 decimal point Level Pv 2 PV2 PV2 decimal point Level prog Program Enter the Program menu SCALE Scale Enter the Scale menu SCAL 1 Scale 1 Enter the...

Page 25: ...etected Aout Analog output Enter the Analog output scaling menu Dis 1 Display 1 Program display 1 value Out 1 Output 1 Program output 1 value e g 4 000 mA Dis 2 Display 2 Program display 2 value Out 2...

Page 26: ...display moves to the next menu every time a setting is accepted by pressing Enter F3 Setting Numeric Values The numeric values are set using the Right and Up arrow buttons Press Right arrow to select...

Page 27: ...and dual scale feature 2 Engineering units 3 Decimal point position 4 Program scaling or live calibration 5 Display parameter and intensity 6 Relay operation 7 4 20 mA analog output scaling Press the...

Page 28: ...0 mV This setting determines the selectable ranges for the millivolt input Range Selection RANGE This menu is used to select the input range The selections listed are determined by the Polarity settin...

Page 29: ...r scaling values for that unit under the setup menu in order for that unit s conversion factor to take effect Otherwise the meter will allow the user to freely switch between standard unit selections...

Page 30: ...Degree symbol represented by if programming with MeterView Pro The letters m and w use two 7 segment LEDs each when selected the characters to the right are shifted one position Press and hold up arr...

Page 31: ...y The Program menu contains the Scale and the Calibrate menus Note The Scale and Calibrate functions are exclusive of each other The meter uses the last function programmed Only one of these methods c...

Page 32: ...calibrated signal source is strongly recommended to calibrate the meter Warm up the meter for at least 15 minutes before performing calibration to ensure specified accuracy Multi Point Calibration Sc...

Page 33: ...the error message is displayed the meter reverts to the input prior to the failure during calibration or scaling and to input 1 during internal calibration allowing the appropriate input signal to be...

Page 34: ...points 6 Max min values 7 Engineering units or custom legends 8 Modbus input 9 Off no display 10 Toggle reading and units 11 Display gross 12 Toggle net gross Display Intensity The meter has eight dis...

Page 35: ...ime non latching c Latching manual reset only d Latching with Clear manual reset only after alarm condition has cleared e Pump alternation control automatic reset only f Sampling the relay is activate...

Page 36: ...t saved until the reset point has been accepted Setting Fail Safe Operation In fail safe mode of operation the relay coil is energized when the process variable is within safe limits and the relay coi...

Page 37: ...For Manual reset mode ACK can be pressed anytime to turn off relay To detect a new alarm condition the signal must go below the set point and then go above it Low Alarm Operation Set Reset For Manual...

Page 38: ...in non alarm condition In case of power failure relay will go to alarm state Low Alarm with Fail Safe Operation Set Reset Note Relay coil is energized in non alarm condition In case of power failure r...

Page 39: ...arm condition 3 Ignore Processed as a low signal condition Time Delay Operation The following graphs show the operation of the time delay function When the signal crosses the set point the On time del...

Page 40: ...the front panel provide status indication for the following The meter is supplied with four alarm points that include front panel LEDs to indicate alarm conditions This standard feature is particularl...

Page 41: ...meter is set up for manual reset at any time Acknowledging the alarm even if the alarm condition is still present resets the relay and turns off the LED Latching Relay Lt Clr In this application the...

Page 42: ...1 2 1 Relays 1 and 2 are set up for pump alternation 2 Relays 3 and 4 are set up for low and high alarm indication Pump Alternation Operation 1 Pump 1 turns on when level reaches 30 000 when level dro...

Page 43: ...t time the level reaches 6000 gallons relay 3 transfers and starts the backup pump 3 If the backup pump is not able to keep up and the level reaches 7000 gallons relay 4 transfers and starts the main...

Page 44: ...I 1 to dI 4 terminal Interlock Relay Operation Example Relays 1 2 are configured to energize their front panel LEDs are off when SW1 SW2 switches above are closed If the contacts to these digital inpu...

Page 45: ...nge selected No equipment is needed to scale the analog output simply program the display values to the corresponding mA output signal The Analog Output menu is used to program the 4 20 mA output base...

Page 46: ...e net value Pressing Reset tare clears the tare value to zero Programmable Tare will not tare negative PVs Use Capture Tare for negative PVs Off Tare function is disabled and pressing Tare key has no...

Page 47: ...use of function keys and digital inputs Pass 2 Allows use of function keys digital inputs and editing set reset points Pass 3 Restricts all programming function keys and digital inputs Protecting or L...

Page 48: ...enter the correct password twice as shown below The meter is now unprotected until a new password is entered If the correct six digit password is entered the meter displays the message unLoc unlocked...

Page 49: ...r address baud Baud rate Select baud rate Tr dLY Transmit delay Set transmit delay for serial communication Parity Parity Select parity Even Odd or None with 1 or 2 stop bits t byt Time byte Set byte...

Page 50: ...on keys and digital I O F1 F1 function key Assign F1 function key F2 F2 function key Assign F2 function key F3 F3 function key Assign F3 function key F4 F4 function Assign F4 function digital input dI...

Page 51: ...U Serial Communication Protocol The meter may be connected to a PC for initial configuration via the onboard micro USB connection For ongoing digital communications with a computer or other data termi...

Page 52: ...can be used to linearize the display for non linear signals such as those from level transmitters used to measure volume in odd shaped tanks or to convert level to flow using weirs and flumes with com...

Page 53: ...al 4 20 mA source reference used to scale the 4 20 mA output Analog Output Source The source for generating the 4 20 mA output may be assigned to the process variable maximum or minimum value reached...

Page 54: ...because it cannot be reset F On 1 Force relay 1 through 4 into the on state This function is used in conjunction with a digital input expansion module to achieve interlock functionality See page 44 f...

Page 55: ...eter displays the first input range 15 mv press the Up arrow to select any other range e g 100mv Press Enter to start the calibration process Example of Internal Calibration for 100 mV input range 1 T...

Page 56: ...eight capacity The meter can also be set up to display the analog input on the upper display and the Modbus input on the lower display The relays and analog output can be programmed to operate from th...

Page 57: ...played either continuously or momentary 1 Display briefly by assigning to the F1 F3 function keys or to the digital inputs in the User menu 2 Display continuously by assigning either display to max mi...

Page 58: ...ow button and scroll to Information menu Info 3 Press Enter to access the software number SFT and version UER information Write down the information as it is displayed Continue pressing Enter until al...

Page 59: ...safe relay 1 Fls 1 Off Fail safe relay 2 Fls 2 Off Fail safe relay 3 Fls 3 Off Fail safe relay 4 Fls 4 Off Parameter Display Default Setting On delay relay 1 On 1 0 0 sec Off delay relay 1 Off 1 0 0 s...

Page 60: ...d to input changes reading a fixed number Check Display assignment it might be displaying max min or set point Display alternates between Hi and a number Lo and a number Press Menu to exit max min dis...

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