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Precision Digital Corporation PD690 Series, Instruction Manual

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D I G I T A L   PA N E L   M E T E R S

Model PD690 Universal Process Meter

Instruction Manual

• 

Easy 

S

ingle 

B

utton 

S

caling 

(SBS)

• 

4-20 mA, 0-5 V, or 0-10 V Field Selectable Inputs

• 

24 V Transmitter Power Supply Standard

• 

Scale Without a Calibrator 

• 

Calibrate with a Signal Source

• 

Steady, Accurate Display to ± 199,990

• 

11-Point Linearization for Non-Linear Inputs

• 

Square Root Extraction with Low-Flow Cutoff

• 

4

1

/

2 

Digit + Extra Zero

•

NEMA 4X, IP65 Front Panel

•

2 or 4  4-20 mA Output Options

• 

115 VAC, 230 VAC, or 24 VDC Power Options

• 

Lockout Feature

• 

Non-Volatile Memory, No Battery Needed 

PRECISION DIGITAL CORPORATION

19 Strathmore Road 

•

Natick MA 01760 USA

Tel 800-610-5239 

•

Fax 508-655-8990

www.predig.com

®

Summary of Contents for PD690 Series

Page 1: ...e with a Signal Source Steady Accurate Display to 199 990 11 Point Linearization for Non Linear Inputs Square Root Extraction with Low Flow Cutoff 41 2 Digit Extra Zero NEMA 4X IP65 Front Panel 2 or 4 Relays 4 20 mA Output Options 115 VAC 230 VAC or 24 VDC Power Options Lockout Feature Non Volatile Memory No Battery Needed PRECISION DIGITAL CORPORATION 19 Strathmore Road Natick MA 01760 USA Tel 80...

Page 2: ... 20 mA Output 16 Programming 17 Overview 17 Single Button Scaling SBS 17 Two point External Calibration Flow Chart 18 Five Basic Digit Display setting Instructions 19 Basic Meter Programming 19 Overview 19 Select Input Signal 20 Initial Calibration with External Source If Needed 20 Select Calibration Method 21 Scale or Calibrate the Meter 21 Select Decimal Point dE Pt 21 Select Linear Input L or S...

Page 3: ...ogramming 27 Overview 27 Setting Alarm Set Reset Points Alars 27 Programming Confirmation 28 Alarm Operation 28 Set Relays for Fail Safe Operation 28 Alarm Acknowledgment 29 Automatic Manual Reset Programming 29 Lockout Jumper 30 SWITCHING INDUCTIVE LOADS 30 AC DC Loads 30 Low Voltage DC Loads 31 RC Networks Available from Precision Digital 31 OPTION CARD INSTALLATION 32 MOUNTING DIMENSIONS 33 PRO...

Page 4: ...Sump Pump Control WaterTank Level Round HorizontalTank Volume Measurement Well Draw down Lift Station Control Flow Square Root Extraction from a DPTransmitter Pressure Compound Pressure High Pressure Alarms Ordering Information Ordering example PD690 3G 14 process meter powered from 115 VAC 3 with 2 relays 14 Part numbers for Option Cards when purchased separately 4 www predig com 115 VAC 230 VAC ...

Page 5: ...st within enclosure Installation and service should be performed only by trained service personnel AVERTISSEMENT Les pièces à l intérieur du boîtier portent des tensions dangereuses Seules des personnes qualifiées et bien entrainées devraient entreprondre l ótalonnage et la maintenance DISCLAIMER The information contained in this document is subject to change with out notice Precision Digital make...

Page 6: ...e in range of the meter above or below 4 mA input An Error message will appear if Input 1 signal and Input 2 signal are too close together Input Minimum Difference Between Range Input 1 Input 2 0 5 V 0 16 V 0 10 V 0 32 V 4 20 mA 1 60 mA INPUT Voltage ranges greater than 300 KΩ IMPEDANCE current ranges 100 120 Ω LOOP POWER AC powered meters only Isolated 24 VDC 5 20 mA regulated Maximum loop resist...

Page 7: ...rs if power is lost No battery needed NORMAL MODE 64 dB at 50 60 Hz REJECTION POWER AC power 115 or 230 VAC 10 50 60 Hz 10 VA DC Power 18 36 VDC 6 watts maximum ENCLOSURE 1 8 DIN High Impact plastic UL 94V 0 FRONT PANEL Type 4X NEMA 4X Panel Gasket provided ENVIRONMENTAL Operational ambient temperature range 0 to 60 C Storage temperature range 40 to 85 C Relative humidity 0 to 90 non condensing WE...

Page 8: ...r Output CALIBRATION The transmitter output can be calibrated so that RANGE a 4 mA output is produced for any number displayed by the meter The 20 mA output may correspond to any number that is at least 501 counts greater or smaller than the number corresponding to 4 mA Ex 4 mA 0 20 mA 501 If the span between 4 and 20 mA is less than 501 counts an error message will appear EQUIPMENT The 4 20 mA ou...

Page 9: ...ation source scaling Signal source not required InPt 1 Input 1 Set Input 1 calibration value Dspy 1 Display 1 Set Display 1 calibration value Inpt 2 Input 2 Set Input 2 calibration value Dspy 2 Display 2 Set Display 2 calibration value DE Pt Decimal Point Set decimal point or light up extra 0 No PtS Number of Points Set meter for 2 to 11 calibration points L or S Linear or Square Set meter for Lin...

Page 10: ...o a meter specified to accept 115 VAC or con necting AC power to a meter specified to accept DC power will result in damage to the instrument as well as endanger personnel Keep pri mary wires separated from signal cables Notice Primary voltages must not be accessible to the user Primary wires must be installed in accordance to the applicable standards Terminals Designation Terminal Description L L...

Page 11: ...e voltage e g L RELAY 1 4 Use AWG 12 18 copper wire 600 volt 60 C or 60 75 C Connect only one wire to each terminal 3 Terminals not connected to line voltage e g AK H CM S S P P V V OUTPUT Use AWG 12 22 wire If using AWG 20 or smaller wire up to two wires may be connected to each terminal If using AWG 18 or larger wire only one wire may be connected to each terminal Model PD690 Universal Process M...

Page 12: ...Figure 2 Transmitter Powered from Meter Figure 3 Transmitter Powered from External Power Supply 12 AC 4 20 mA Transmitter 3 2 1 Signal Input Selection Array Lockout Jumper L L P P S S C H A O L C M D K Signal Input Selection Array Loop Power Supply 4 20 mA Transmitter AC 3 2 1 Lockout Jumper L L P P S S C H A O L C M D K ...

Page 13: ...gure 5 Voltage or Self Powered 4 20 mA Input AC 3 Wire Transducer Signal P P 3 2 1 Signal Input Selection Array Lockout Jumper L L P P S S C H A O L C M D K See page 20 for Input Signal selection table Voltage or Current Input AC 3 2 1 Signal Input Selection Array Lockout Jumper L L P P S S C H A O L C M D K See page 20 for Input Signal selection table ...

Page 14: ...Transmitter and Meter Powered from Separate DC Power Supplies 14 www predig com 24 VDC Power Supply 4 20 mA Transmitter 3 2 1 V V S S C O M H L D A C K Signal Input Selection Array Lockout Jumper For signal power isolation seperate power supplies are required Loop Power Supply 4 20 mA Transmitter 3 2 1 Signal Input Selection Array Lockout Jumper 24 VDC V V S S C O M H L D A C K ...

Page 15: ...e made to J1 on the Options Board Figure 8 Option Card Pinouts Notes 1 Alarm acknowledgement terminals ACK and COM are located on the meter main board 2 In the alarm condition the NC contact is connected to common in the fail safe mode Figure 9 Rear View of Meter Connectors 15 Relay 1 Common Relay 1 NC Relay 1 NO Relay 2 Common Relay 2 NC Relay 2 NO Relay 3 Common Relay 3 NC Relay 3 NO Relay 4 Com...

Page 16: ...llow ing diagrams illustrate Figure 10 Meter Powering 4 20 mA Output Loop Figure 11 External Power Supply Powering 4 20 mA Output Loop If the output loop is powered by an external supply the loop power supply must be turned on before the meter is turned on Otherwise the output loop signal may be incorrect 16 www predig com Signal Input Meter Recorder Controller etc A H S S P P L L CM Signal Input ...

Page 17: ...ter reads the desired value This value may be a menu title the entire display or just a single digit If the meter is not reading the desired value wait and the value will change When the meter finally reads the desired display push ENTER to accept it When the meter is first powered up it will read a random number Pushing ENTER will cause the meter to scroll through the following menu titles if the...

Page 18: ...predig com Calibration Complete Push ENTER Apply input 1 signal e g 4 mA Push ENTER Is entire flashing display OK Push ENTER Wait for digit to flash Has input 2 been calibrated yet Is the flashing digit OK Push ENTER Push ENTER when OK Wait for digit to scroll Is entire display flashing YES YES YES YES NO NO NO NO ...

Page 19: ...NTER before it stops flashing to accept it 2 If the flashing display is not OK or if ENTER was not pushed in time to accept it wait for Least Significant Digit LSD to flash 3 If a flashing digit is OK push ENTER before it starts to scroll to accept it 4 If a flashing digit is not OK or if ENTER was not pushed in time to accept it wait for the digit to scroll and push ENTER when OK 5 Digits will sc...

Page 20: ... Program the Signal Input Selection Array for desired input per Table 1 above 2 Apply power with ENTER and ACK buttons pushed Release when display stops flashing 3 The meter scrolls through the choices 20 5 and 10 Which corresponds to input signals of 4 20 mA 0 5 V or 1 5 V and 0 10 V Push ENTER when desired value appears 4 The meter flashes InPt 1 Apply low end signal 4 mA or 0 V push ENTER 5 The...

Page 21: ...then reads 199990 with the decimal point changing locations and the extra 0 illuminating Push ENTER when the decimal point is in the desired position or if the extra 0 is desired when the extra 0 is displayed Select Linear Input L or S The meter can be programmed to either process the input signal in a linear fashion L or to take the square root of it S To program the meter for a linear input push...

Page 22: ...and input 2 signal are too close together Table 2 Input Range Minimum Spans Scale Using Internal Calibration I al If I AL Internal Calibration was selected above in Select Calibration Method the meter can be scaled without applying an input Desired values can be programmed using the Five Basic Digit Display setting Instructions described on page 19 See Figure 13 Two point External Calibration Flow...

Page 23: ...ired display for input 1 3 InPt 2 flashes Apply input 2 signal e g 20 mA 10 V etc then push ENTER Program desired display for input 2 Calibration Error Error A meter display of Error during calibration indicates that the calibration process was not successful and the meter needs to be recalibrated 1 The Error message will appear if input 1 signal and input 2 signal are too close together seeTable ...

Page 24: ...ion push ENTER When L or S appears push ENTER again The meter will flash L or S alternately Push ENTER when S is flashing After S has been selected the meter will switch to indication mode and is ready to be calibrated Program Low Flow Cutoff utoFF Low Flow Cutoff allows the meter to be programmed so that the often unsteady output from a differential pressure transmitter at Low Flow rates always d...

Page 25: ... Horizontal Tank Calibration Points 25 www predig com Calib Input Display Display Example Point mA Volume 500 GallonTank 1 4 0 0 00 0 0 2 4 8 1 80 9 0 3 6 0 7 20 36 0 4 7 2 14 20 71 0 5 9 2 28 10 140 5 6 14 8 71 80 359 0 7 16 8 85 80 429 0 8 18 0 92 80 464 0 9 19 2 98 10 490 5 10 20 0 100 00 500 0 Model PD690 Universal Process Meter Instruction Manual Calib Input Display Display Example Point mA V...

Page 26: ...Instructions on page 19 Setting 20 mA Output Value 1 When ENTER is pushed to complete the programming for 4 mA output the green LED labeled 20 illuminates indicating the flashing display is the value at which the meter will produce a 20 mA output 2 Program desired value per Five Basic Digit Display setting Instructions on page 19 3 An Error message will be displayed if the 4 20 mA output span is s...

Page 27: ... points are programmed using the Five Basic Digit Display setting Instructions described on page 19 1 Push ENTER and when ALArS appears push ENTER again This starts a scan of the four alarm set reset points The scan sequence begins with a flashing display of alarm 1 set point The 1 LED and S LED below the display are illuminated to indicate the meter is flashing alarm 1 set point value Program the...

Page 28: ...as tripped This LED will stay illuminated until the meter display passes through the reset point Set Relays for Fail Safe Operation In the fail safe mode the relay coils are energized and the Normally Open NO contacts are connected to the Common C contacts under normal operation During an alarm condition the relay coils are de energized and the Normally Closed NC contacts are connected to the Comm...

Page 29: ... will automatically reset when the signal passes through the reset point A manual reset will reset all relays that are programmed for automatic manual reset Figure 14 Relay Reset Fail Safe Jumpers An array of jumpers located behind the front panel on the Display Board is used to program each relay for either automatic or automatic manual reset Refer to page 32 for front panel removal instructions ...

Page 30: ...r Capacitor RC Networks improves this performance and prolongs the life of the meter s relay contacts This suppression can be obtained with RC networks assembled by the user or purchased as a complete assembly Refer to the following circuits for RC network assembly and installation AC DC Loads Figure 15 AC DC Loads Choose R and C as follows R 0 5 to 1 for each volt across the contacts C 0 5 to 1 µ...

Page 31: ...es an inductive load Part number PDX6901 RESET METER TO FACTORY DEFAULTS To reset the meter to the factory defaults 1 Remove the snap off front cover see page 32 2 Using a pair of needle nose pliers short out the solder pads located on the top and bottom of the Main Board to the right of the ACK button below JP6 see Figure 14 on page 29 until the display shows reset 3 Press the ENTER button The me...

Page 32: ... its top and bottom edges and pull it forward The latch plate remains around the meter s case To remove the circuit boards from the case 1 Unscrew the retaining screws holding the circuit boards to the case 2 Remove the screw terminal connectors at the rear of the meter 3 Push the boards through the case by applying pressure to the circuit boards at the rear of the meter Apply pressure evenly to b...

Page 33: ...g the assembly in the case 4 Install washers and retaining screws in 4 corners of meter and install front cover Figure 18 Option Card Installation MOUNTING DIMENSIONS Figure 19 Mounting Dimensions Notes 1 Panel cutout required 1 772 X 3 622 45 mm x 92 mm 1 8 DIN 2 Panel thickness 0 125 0 250 3 17 mm 6 34 mm 3 Clearance allow 6 inches 152 mm behind the panel 33 Input Configuration Jumpers Display B...

Page 34: ... point display 1 Input 2 set point display 2 Input 3 set point display 3 Input 4 set point display 4 Input 5 set point display 5 Input 6 set point display 6 Input 7 set point display 7 Input 8 set point display 8 Input 9 set point display 9 Input 10 set point display 10 Input 11 set point display 11 Alarms Alarm 1 set point reset point Alarm 2 set point reset point Alarm 3 set point reset point Al...

Page 35: ...r FM CSA PD687 31 2 Digit Loop Powered Exp Proof Meter FM CSA PD691 1 8 DIN Strain Gauge mV Input Meter UL Listed PD692 1 8 DIN Analog Input Flow Rate Totalizer UL Listed PD693 1 8 DIN Pulse Input Flow Rate Totalizer UL Listed PD696 1 8 DIN Loop Powered Flow Rate Totalizer PD697 NEMA 4X Loop Powered Flow Rate Totalizer PD698 Exp Proof Loop Powered Flow Rate Totalizer FM CSA PD740 JavelinTTC RTDTem...

Page 36: ...343 1001 or 508 655 7300 fax 508 655 8990 e mail sales predig com For Extended Warranty Setup Calibration Services please visit www predig com For an online version of this instruction manual please visit www predig com Model PD690 Universal Process Meter Instruction Manual PRECISION DIGITAL CORPORATION 19 Strathmore Road Natick MA 01760 USA Tel 800 610 5239 Fax 508 655 8990 LIM690 Rev F 10 05 ...

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