Page 2 - One Omega Drive, River Bend Technology Centre; OMEGAnet
Servicing North America: USA: One Omega Drive, P.O. Box 4047 ISO 9001 Certified Stamford CT 06907-0047TEL: (203) 359-1660 FAX: (203) 359-7700 e-mail: [email protected] Canada: 976 BergarLaval (Quebec) H7L 5A1TEL: (514) 856-6928 FAX: (514) 856-6886 e-mail: [email protected] For immediate technical or applic...
Page 3 - TABLE OF CONTENTS; UNPACKING; NOTE
TABLE OF CONTENTS i QUICK SET-UP GUIDE ..................................................................................................... ii SPECIFICATIONS ............................................................................................................. 1 HOW TO MOUNT THE UNIT ..........
Page 4 - PROGRAMMING EXAMPLE; ii
QUICK SET-UP GUIDE 1) Determine what function the panel meter is to perform, e.g., rate display with alarm, batchcontrol, totalizer, etc. 2) Ensure compatibility with sensor. The DPF70 panel meters require a pulse (or contactclosure) input. The pulse must exceed 3 VDC and drop below 1 VDC. If necess...
Page 5 - iii
COUNTER STEP 2: DPF75, DPF76: A,) Reset to zero "rST 0" will allow us to count up. "SET Pr" counts down from the preset value. B.) To read the total in whole gallons, set the decimal point to the far right. C.) Since you do not want to sum or take the difference of two inputs, choose...
Page 6 - DESCRIPTION & SPECIFICATIONS
1 DESCRIPTION & SPECIFICATIONS DESCRIPTION: The OMEGA DPF70 is a dual input (channel A and B) counter/ratemeter, each with its own 5 digit dividing scale factor. The two 5AMP preset relay outputs can be programmed by the user to applyto the "A" total counter, the "A" ratemeter, o...
Page 7 - HOW TO MOUNT THE UNIT; DIMENSIONS
2 HOW TO MOUNT THE UNIT The unit is designed to be mounted with a gasket providing a water tight seal. Two mounting brackets are provided tosecure the unit to the panel. A panel less than .1" may distort if the clamps are screwed too tightly. Slide the body of the unit through the rubber gasket....
Page 8 - WIRING; Four sources of noise can occur:; UP/DOWN CONTROL AND QUADRATURE INPUTS
3 WIRING The rear terminal contains 12 screw terminals for connecting #14 to #28 gauge wire. The unit is controlled by a microprocessor and, therefore, an electrically "noisy" environment could cause operatingproblems. The input power line should not be common to power lines for motors, pump...
Page 9 - CONNECTING AC / DC POWER; DO NOT USE PIN 7 WITH THESE METERS!; DO NOT USE PIN 7 WITH THESE METERS!; WIRING CONSIDERATIONS; Connecting the DPF70 Series to Omega Flowmeters and Amplifiers:
4 CONNECTING AC / DC POWER NOTE: Connect power only after other connections are finished. Do not touch the live AC power terminals! The unit hasbeen designed with an isolated AC input. Thus, polarity is not a concern for the AC input. The chassis is plastic, thereforeearth ground is not used. For D....
Page 10 - FUNCTION; BOTTOM VIEW AT TERMINAL; Millivolt; INPUT
5 WHAT CAN YOU VIEW? 1) "A sub B" - If you have selected the "A sub B" mode, pressing "view" shows: A) The net result of subtracting input B from input A. Pulses on input B will subtract (count down). Pulses on input A will add (count up) if "reset to 0" is selected, ...
Page 11 - PROGRAMMING FLOWCHART; Press this key to step through menu choices.; Press this key to enter displayed value; Start Here; OPERATING THE FRONT PANEL
6 PRGM FACToR RUN MODE DP F A ##### DP F B ##### ENTER ENTER ENTER ENTER ENTER PRGM HiCPS LoCPS PRGM RUN MODE ENTER RATE METER (MR2) ONLY CouNT ENTER RST 0 SET PR PRGM ENTER DPLoC ENTER A NET B A SEP B PRGM ENTER ENTER A ADD B A SuB B PRGM HiCPS LoCPS PRGM ENTER RUN MODE ENTER RATE ENTER SCALE RPS P...
Page 12 - PROGRAM CODES AND DESCRIPTIONS
7 The following is a list of abbreviations as they appear on the display and front panel of the unit. ABBREVIATION DESCRIPTION FACTOR SCALING FACTOR - For A and B Inputs. Each input has a separate 5 digit dividing scale factor. DP F A DECIMAL POINT FOR FACTOR A - Enter location of decimal point for ...
Page 14 - CALCULATING SCALE FACTORS; RPM of the shaft is the desired readout.
9 CALCULATING SCALE FACTORS There are two separate dividing scale factors, one for input "A" and one for input "B". The factor to enter is the number ofpulses per the desired unit of measurement. The factor ranges from 0.0001 to 99999. The factor is the same for rate andcount on inpu...
Page 15 - PROGRAMMING
10 REMARKS This section of the menu is used to setup the scaling factors for inputs A & B. This sets the decimal for factor A.Press the arrow key under the digitwhere the decimal is desired. To clearthe decimal, press the arrow key fur-thest to the right (PRGM) . This is the scaling factor for i...
Page 17 - STEP
12 ENTER STEP 3 REMARKS PRESS DISPLAY This section of the menu is used to set up therate information. Press the PRGM key to choose RPS (rate persecond) or SCALE (RPM, RPH). Press ENTERto enter displayed choice. Press PRGM to choose ÷ 60 (RPM) or ÷ 3600 (RPH). Press ENTER to enter displayed choice. T...
Page 19 - PRE A; This step will only
14 REMARKS DISPLAY PRESS PRGM PRGM PRGM PRGM PRGM STEP 5 SETTING THE RELAYS ENTER This section sets up the relay information. Press the PRGM key to choose A TOT (Aassigned to total) or A RATE (A assigned torate). Press ENTER when the desired choiceis displayed. This is the duration (.1 to 99.9 sec) ...
Page 20 - OUTPUT WIRING; SOLENOID; PNP; GND
15 OUTPUT WIRING The following diagrams detail the connection of the relay and analog output options. Each relay consist of a form A contact(Normally Open). NPN transistor or Normally Closed contacts are available with solder jumpers (see Jumper Options). SOLENOID (Single Stage) Use Relay A (pins 1 ...
Page 21 - ANALOG OUTPUT OPTION; AL; REAR VIEW
16 ANALOG OUTPUT OPTION Description: An optional 4-20mA (0-20mA) output has been added to the DPF70series. The output can be programmed to track rate or total. Thisfeature is available by adding suffix A to the part number. Connec-tions are via a 2 terminal pluggable screw connector. Connections: (s...
Page 23 - SERIAL INPUT COMMANDS:; RA RB; SERIAL INTERFACE OPERATION:; The input impedance of RS232 is 3K
18 SERIAL INPUT COMMANDS: To get a unit on line you must address it by its device number.This is done by typing DXX(S), XX= device number. The unitcomes on line and echoes back DEVICE# XX. Insure that"DEVICE# XX:" is received before requests are sent. The unitis now ready to receive a comman...
Page 25 - TROUBLESHOOTING GUIDE
20 PROBLEM SOLUTIONS POSSIBLE CAUSES TROUBLESHOOTING GUIDE Power is applied to unit but the displaydoes not light. Unit works, but occasionally the displayfreezes or skips counts. Input signal is connected but the unitdoes not count or display rate. Rate is displaying: r FFFFF. Relays are not activa...
Page 26 - NOTES
Page 29 - RETURN REQUESTS/INQUIRIES; WARRANTY; OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
WARRANTY/ DISCLAIMER OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for aperiod of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping...
