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DPF20 Series

Panel Meter for  

Frequency, Rate, Total  

or Period Counter

6-Digit, 

1

8

 DIN Panel Mount

TM

Shop online at 

omega.com

User’s Guide

Summary of Contents for DPF20 Series

Page 1: ...ail info omega com For latest product manuals www omegamanual info DPF20 Series Panel Meter for Frequency Rate Total or Period Counter 6 Digit 1 8 DIN Panel Mount TM Shop online at omega com User sGui...

Page 2: ...eserves the right to alter specifications without notice Servicing North America U S A Omega Engineering Inc Headquarters Toll Free 1 800 826 6342 USA Canada only Customer Service 1 800 622 2378 USA C...

Page 3: ...ctive it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limited to mishandling improper interfacing o...

Page 4: ...ghtness levels Index 1 Panel meter DPF20 4 1 1 How to order 5 1 2 Impulse counter modes 5 1 3 Ratemeter modes 5 1 4 Periodmeter mode 5 1 5 Functions included 5 1 6 Front view 6 1 7 Power connections 6...

Page 5: ...tor 1 to 999999 and configurable divider factor 1 to 999999 For low frequency applications the SLOW mode provides the best response time for each application see section 1 15 Maximum frequency up to 5...

Page 6: ...r menu entry will configure the sen sor parameters to the values indicated in the table The table also indicates the typical con nections for each type of sensor Param eters can be manually modified C...

Page 7: ...control options relays analog outputs serial communi cations see section 2 Mechanical mounting panel connections plug in screw terminal housing material ABS polycarbonate V0 weight 150 grams front siz...

Page 8: ...the instrument restart power up or configuration change is used for internal initialization and will not be counted as impulse 1 14 Function cycle counter 1 15 SLOW mode The trigger level is automati...

Page 9: ...nctions as a ENTER key It selects and accesses the menu option currently dis played At menus with numerical value entries it validates the num ber displayed Key UP 5 the UP 5 key gives access to the f...

Page 10: ...eter mode Impulses input at channel A Channel B disabled Access the Decimal point dP menu to select the decimal point position Move the decimal point by pressing the LE 3 key Configure the function mo...

Page 11: ...unting when channel B is at logical state 1 Select on_0 to inhibit the counting when channel B is at logical state 0 1 19 4 Configuration for cnI 3 Configuration menu for mode counter control add subs...

Page 12: ...5 for more in formation on the SLoW mode in case of unstable signals activate the average filter AVr func tion It activates a recursive filter on the reading the filter is stronger for higher values f...

Page 13: ...ncies activate the SLoW parameter configuring the tIME parameter between 1 and 1000 seconds Configure the nuMb parameter between 1 and 32 impulses See section 1 15 for more in formation on the SLoW mo...

Page 14: ...on for reset channel Act r configures the activa tion of the reset channel by rising edge on_h or by falling edge on_0 Excitation voltage V EXc configures the value of the excita tion voltage at 5 Vdc...

Page 15: ...lue from 0 0 to 99 9 seconds at Deactivation delay dEL 1 configure the delay to apply before alarm deactivation The deactivation delay starts counting when the setpoint value plus the hysteresis value...

Page 16: ...allows to visualize and modify the alarm2 setpoint through the fast access menu the Setpoint3 ALr3 function allows to visualize and modify the alarm3 setpoint through the fast access menu the Memory...

Page 17: ...ord At the Factory reset FAct menu select yes to load the default factory configuration for the instrument see section 1 21 1 19 20 Factory reset 1 19 21 Firmware version The Counter overrange c orG a...

Page 18: ...999999 Conf counter inhibition Multiplier Divider Preset Preset value 199999 to 999999 Mode Up Down Inhibition Inhibits if chan nel B is high Inhibits if chan nel B is 0 Vdc Multiplier 1 to 999999 Div...

Page 19: ...level from 0 0 Vdc a 3 9 Vdc See section 1 15 for Trigger Sense utility Pull down No pull resistor Pull up Pulls on reset Pulls on channel B Pull down No pull resistor Pull up Pull down No pull resis...

Page 20: ...ximum Memory of minimum Setpoint 1 Setpoint 2 Setpoint 3 Memory of cycles Preset value On power up Delay Seconds Reset Key LE Front reset Alarm unlock No function Counter overrange Flash To zero To pr...

Page 21: ...5 Vdc Antirrebound filter 0 mSeconds Tools Fast access Key UP off On Power Up Delay 0 seconds Key LE reset function Memory of maximum 199999 Memory of minimum 999999 Memory of cycles 0 Counter overran...

Page 22: ...rectly connected to the pins on the display module Place all the set into the housing assuring that the modules correctly fit into the internal guiding slides of the housing Once introduced place agai...

Page 23: ...the instrument In case of fire disconnect the instrument from the power line fire alarm according to local rules disconnect the air conditioning attack fire with car bonic snow never with water 1 24...

Page 24: ...g in screw terminal pitch 5 08 mm Installation allowed at Opt 1 Opt 2 Opt 3 Option R1 Output type relay Relay type 3 contact relay NC NO common Maximum current 8 A resistive load Maximum voltage 250 V...

Page 25: ...setting the parameters at the options configuration menu Opt 1 Opt 2 or Opt 3 depending on the position the module is installed The output signal is proportional to the instrument reading and it can b...

Page 26: ...ent Reading Analog output Example analog output in 4 20 mA associated to a reading of 50 0 to 100 0 50 0 100 0 4 mA 20 mA d Lo 50 0 d hI 100 0 Ao hI 20 00 Ao Lo 4 00 Scaling Mode 4 20 mA Mode in case...

Page 27: ...9999 9999 to 1999 10 SETPOINT2_H 16 bits 11 SETPOINT3_L Setpoint 3 value 16 bits 999999 to 199999 9999 to 1999 12 SETPOINT3_H 16 bits 13 STATUS Alarm status Instrument status 16 bits same as display b...

Page 28: ...to load the de fault factory configuration for the instrument the Version VEr menu informs of the current firmware version installed in the module The Modbus RTU protocol defines the following scenar...

Page 29: ...g to R5 and R6 Register R7 and R8 SETPOINT1_L and SETPOINT1_H Contains the setpoint value of alarm 1 codified in two registers of 16 bits each Possible values are from 999999 to 199999 Decimal point p...

Page 30: ...5 ASCII Terminal B B signal from RS 485 bus Terminal A A signal from RS 485 bus Terminal G GND Table 13 Connection terminals Power Opt 2 Opt 1 Opt 3 B A G B A G Signal B A G Rear view DPF20 2 4 1 Acce...

Page 31: ...grouped inside the Tools TooL menu the Decimal point dP menu is provided for compatibility with ancient hardware that does not support decimal point retransmis sion By default select Automatic Auto If...

Page 32: ...apply see section 2 4 8 ETX End of frame 1 byte n 9 does not apply 3 Table 15 Description of the bytes for the ASCII frame Section Trail Contains the CRC code and the end of frame byte ETX Real value...

Page 33: ...frame and the Slave replies to the Master with a PONG frame Frames PING 32 and PONG 33 2 4 7 Frame examples Frames RD 36 and ANS 37 Example Master address 0 requests the value of register 0 dis play...

Page 34: ...C D E Rear view DPF20 Module Connections Module S2 RS 232 ASCII Terminal A Tx2 Terminal B Rx2 Terminal C Tx1 Terminal D Rx1 Terminal E GND Table 16 Connection terminals Option R2 R4 R6 Output type rel...

Page 35: ...s when the reading has passed the setpoint value plus the hysteresis value at Delay 0 dEL 0 assign the delay to be applied before alarm activation The activation delay starts counting when the setpoin...

Page 36: ...nclipped Front filter is slightly moved to the front on each corner It can now be removed by hand C 1 C 2 Unclipped Unclipped C 3 D B C A C Repeat with all clips Place a flat screw driver at the first...

Page 37: ...e fitted or not fitted Fully insert corner X into the housing See at image B 2 that the filter is not yet clipped only corner X is completely fitted Corner Y can be also fitted or not fitted it is not...

Page 38: ...38 DPF20 Frequency rate total or period counter Instruction Manual...

Page 39: ...39 DPF20 Frequency rate total or period counter Instruction Manual...

Page 40: ...Air Velocity Indicators Turbine Paddlewheel Systems Totalizers Batch Controllers pH CONDUCTIVITY pH Electrodes Testers Accessories Benchtop Laboratory Meters Controllers Calibrators Simulators Pumps I...

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