Chapter 4: Inputs

CHAPTER 4

INPUTS

ISACC comes with 16 user definable inputs that can sense the following: temperature, analog voltage, analog current, dry contact and pulse count.

HOW THE INPUTS WORK

ISACC reads the value of each input by measuring the voltage across the input terminal and common. ISACC can read the voltage between 0 Volts and 5 Volts, in increments of .00489 Volts.The inputs are configured by positioning the shunts at location P12 on the ISACC circuit board. (P12 is located under the acrylic safety panel directly above the input terminal block. Refer to Appendix B for a diagram of the ISACC board layout.) P12 has 16 sets of pins, one set for each input. See diagram of P12 below:

P12

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

TEMP

20mA

 

4-

The input configuration pins at P12

When the shunts are positioned for a specific type of sensor, ISACC uses a different circuit to measure the appropriate reading for that sensor. The three configurations are single ended 4- 20mA; thermistor/digital/pulse; and 0-5V. To configure an input channel, you must first

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Phonetics 5000, 5100 manual HOW the Inputs Work

5000, 5100 specifications

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