DGH Corporation, D1612, D1600 Frequency Input Module, Timer/RS-485
Features:
- Input protection to 250Vac One digital input (/Events counter on 160x and 161x modules)
- ASCII format command/response protocol
- 500V rms analog input isolation
- 15 bit measurement resolution
- Continuous self-calibration; no adjustments of any kind
- Programmable digital filter
- Digital limit setting and alarm capability
- Digital inputs and outputs connect to solid state relays
- Events counter to 10 million
- Requires +10V to +30Vdc unregulated supply
- Screw terminal plug connectors supplied
The D1600 modules measure frequency and pulse signals from industrial sensors. The frequency input modules can measure frequency signals between 1hz-20Khz. The pulse input modules measure the pulse width of signals between 100 microseconds and 30 seconds. Both unipolar and bipolar signals can be measured.
The D1600 series includes an accumulator version of the frequency and pulse input modules. The accumulator versions measure the instantaneous frequency and totalize the number of cycles or pulses that the module has measured. An internal counter is used to count the number of cycles or pulses. The counter can be read or cleared at any time. It can also be read and cleared at the same time. The frequency accumulator module measurement range is 1hz-10Khz.
The D1600M frequency input modules include one discrete digital input for monitoring contact closures or switches. The discrete digital input contains an internal pull up resistor and can accept +/-30Vdc signals without damage. The discrete switching levels are <+1Vdc = logic "0", >+3.5Vdc equals a Logic "1".
The D1600 Frequency input modules can be mounted on a DIN-Rail using the MK-1 mounting kit
For more information, please see 
Data Sheet
