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Sensaphone FGD-3020 - Scada 3000 Pulse Count Input Module

Sensaphone SCADA 3000 - Pulse Count Module - Description

The SCADA 3000 Pulse Count Module is an optional component for use with the Sensaphone SCADA 3000 system. It features 4 totaling pulse count channels and 4 virtual channels that can be programmed to calculate various rates or to display count overflow.

The module has four pulse count channels, each of which is capable of counting pulses at a rate of up to 10,000 pulses per second (10KHz). Each channel will totalize pulses up to one million and then reset to zero. The four virtual channels can be programmed to calculate the pulse as either pulses-per-second, pulses-per-minute, or pulses-per-hour.

The module is compatible with dry contact or solid state pulse generating devices such as relays or switches. The term DRY contact means that there must NOT be any voltage connected to the circuit. The module may also be connected to the logic output of another solid state computer device (e.g., Open Collector, TTL, CMOS). The module includes adjustable filtering for each channel to prevent counting errors generated by the bounce from slow-moving switches.

HOW THE PULSE COUNT MODULE WORKS

The two main uses for the Pulse Count Module are

  1. To measure and record flow rates. The liquid flow rate sensor operates like a paddlewheel, and each rotation causes an electrical pulse.
  2. To measure RPM. Industrial generator or motor activity is usually measured in RPMs.


The SCADA 3000 Pulse Count Module splits incoming data into four channels of accumulated pulse, and four virtual channels measuring the rate of pulses, thus generating a total of eight. Thus, you can receive two different measurements from a single input.

Channels 1-4 measure Accumulated pulse from 0 to 1 million, after which the figure resets.

Channels 5-8 are virtual and offer 4 programming options

  1. Pulses-per-second
  2. Pulses-per-minute (i.e., RPM)
  3. Pulses-per-hour
  4. Accumulated pulse overflow. When selected, this option will count beyond the 1 million limit of accumulated pulse on channels 1-4, adding a "1" to the total every time the corresponding flow rate channel reaches 1 million.

The channels correspond as follows:

  • Channel #1: Pulse Count Total from input #1
  • Channel #2: Pulse Count Total from input #2
  • Channel #3: Pulse Count Total from input #3
  • Channel #4: Pulse Count Total from input #4
  • Channel #5: Rate or Count Overflow from pulse input #1
  • Channel #6: Rate or Count Overflow from pulse input #2
  • Channel #7: Rate or Count Overflow from pulse input #3
  • Channel #8: Rate or Count Overflow from pulse input #4