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Digital Pulse Input to Analog Output

Product Description:

The ACI/PTA converts a pulse width modulated digital input to an analog output. The ACI/PTA is powered with regulated 24VDC or regulated 22 to 28VAC. The digital to analog conversion uses 256steps of resolution for maximum accuracy.

The ACI/PTA accepts inputs from dry contact or solid state closures and triggers on pulses greater than 5-24VAC/DC. Four input pulse clock rates are selectable with jumpers. The input signal is optically isolated and can accept either positive or negative polarity. One of eight preset voltage or current outputs can be selected with dip switches. The user may also use gain and offset potentiometers to custom adjust the output signal. The present output is held stable until the end of the next input signal is received. In the case of a excessively long input pulse the output will not wrap around but will hold steady at the maximum or minimum output.

Input Timing Ranges:0.59 to 2.93 seconds,
0.02 to 5 seconds, 0.1 to 25.5 seconds, 0.1 to 10 seconds,
0.23 to 6 seconds

Output Spans:
Preset Spans:0 to 1 VDC 1 to 2 VDC
0 to 4 VDC1 to 5 VDC
0 to 10 VDC1 to 11 VDC
0 to 14 VDC1 to 16 VDC
Adjustable0 to 16 VDC with adjustable offset
Preset Spans0 to 16 mA 4 to 20 mA
Adjustable0 to 20 mA with adjustable offset

Preset spans are all dip switch selectable.

The ACI/PTA2 includes triac adapter circuitry. The input can be relay, contact closure, transistor, or (by setting a jumper) triac. The standard output is limited to 0-10VDC. A manual override jumper will allow the user to adjust the 0-10VDC output.

Product Specifications:
Supply Voltage 24 VAC/VDC +/- 10%Load Impedance Current - 750 Ohms max
Voltage- 1000 Ohms min.
Supply Current 45 mA (max)Size 3.75"L x 2.25"W x 1.5"H
Accuracy +/- 2% of span for all ranges Trigger LevelDry Contact to common, 5-24 VDC or 24 VAC
Time Between Pulses 1 millisecond min

Ordering Information:


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Last Updated 03/18/10