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Titan Logix Corp., we endeavor to design equipment that is simple to use and reliable in its operation, with the aim of satisfying our customers needs. Titan Logix Corp. fields of expertise include: • Level and Flow Measurement • Transport Instruments •...
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Titan Logix Corp. shall not be liable for any loss, cost or damages, of any kind whatsoever, whether consequential, indirect, special or otherwise, arising out of or in connection with the equipment or any defect therein, even if caused by the negligence of, Titan Logix Corp., its employees or agents.
Table of Contents Introduction......................6 About This Manual..................6 About the SFT881 ..................7 Main Features....................7 Installation......................8 Environmental....................8 Outline ......................9 Mounting......................9 Interconnection .................... 10 Turbine Input ..................11 Pulse Output..................12 Power ....................13 Setting the Pulse Output Level .............14 Adjusting the Gain Sensitivity ...............14 Operation When Installed Correctly............. 14 Programming ....................
Introduction About This Manual This instruction manual provides information specific to the Titan Logix Corp. SFT881. Other peripheral equipment should be supplied with its own instruction manual and that manual should be referred to for proper operation of the peripheral equipment.
SFT881 to be connected to many different totalization devices from dedicated flow totalizers up to standard RTU and PLC inputs. The SFT 881 is designed with a user programmable K factor to allow the input signal to be divided into more useable volume measures, this allows for standard digital accumulators to act as more easily as a flow totalizer.
Installation Installation should only be performed by qualified personnel, and in accordance with local governing regulations. Environmental Choose a mounting location suited to the SFT881 enclosure. The ideal SFT881 mounting location is where the: Turbine pickup is as close as possible. Mounting surface has minimal vibration.
Interconnection Perform all wiring in accordance with local governing regulations. Please refer to the diagram below for the location of the configuration jumpers and the I/O terminals on the SFT881. TURBINE PULSE DC INPUT INPUT 9V - 28V OUTPUT HIGH SEL DIG INPUT SENSITIVITY INC DIG...
Turbine Input The turbine input is a non-polarized input. To connect the magnetic pickup to the SFT881, bring the wires to terminals 1 and 2 of the terminal block (labeled TURBINE). NOTE: To prevent improper operation and false input readings, the SFT881 should be mounted as close as possible to the turbine’s magnetic pickup.
Pulse Output The SFT881 has photovoltic relay output for connection to external monitoring equipment (eg. flow totalizer, PLC input, RTU input, etc.). This relay is rated for 50mA maximum current draw with a maximum voltage of 300V across the terminal blocks.
Power IMPORTANT! Before applying power to the SFT881 ensure the supply is set to a voltage the unit can accept, otherwise damage to the SFT881 is very likely. Before applying power to the SFT881 for the first time, ensure any related alarm/control equipment is disabled until satisfactory system operation and performance is verified.
Adjusting the Gain Sensitivity The INPUT SENSITIVITY JUMPERS provide three general sensitivity levels: HIGH, Top position: The sensitivity for position A is good for a 20mVpp signal. LOW, Middle position: This is the default sensitivity setting. This position is where the jumper should be for most applications.
Programming The SFT881 has been designed with three (3) programmable parameters. These are: K Factor: This value determines how many input pulses are counted before the output pulses once. Pulse Width: This value determines how long each output pulse is on. Pulse State: This value determines the normal (off) state of the output.
K Factor After pressing either button in normal operating mode the SFT 881 will enter K factor programming mode. The Numeric Position Indicators will show the least significant (Ones) position, and the Numeric LED will indicate the K factor value in that position.
Output Pulse Width Press the Select Digit button till the Pulse Width LED is displayed. This will cause the 7-segment display to indicate the current value stored as a pulse width. Below is what each digit represents for each pulse width. The default Pulse Width is 0.15mS.
If the SFT881 does not register a button press for a period of 90 seconds the unit will return to normal operating mode and the information in memory will not be changed. See the Programming Example section for step by step instructions. Programming Example User desires: - K factor of 648 (previous K factor is 1)
Setting the Pulse Width: Press the Increment button until the desired code is showing (ie. 3). The codes are: rate alarm 0.15mS 25mS 100mS 500mS Setting the Output Condition: Press Select until NORM O/P condition LED is lit. To change the output condition code press the Increment button again (ie. 1) The codes are: normally open (pulses will be low) normally closed (pulses will be high)
1 US gallon = 0.0037854 cubic meters (from above information). 14727.27 pulses = 3890545 gallon 0.0037854 3890545 is the value of the converted K factor. This is the number you would enter into the SFT881. Troubleshooting Problem Possible Solution There is no output 1.
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