Analog inputs, Analog outputs – Rockwell Automation 1395 Discrete Adapter, Rev 3.XX-8.XX User Manual

Page 8

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Chapter 2

Hardware Description

2-2

Analog Inputs

The Discrete card contains four programmable 12-bit analog to digital
inputs. These inputs allow a

±

10V DC analog signal to be converted to a

±

2048 digital signal, thus providing 4.88 millivolts per bit resolution.

Through programming of associated Scale and Offset parameters the
effective range of the converted signal can be extended to

±

32767. The

converted analog signal can be used to control any of the 1395 run-time
parameters. External connections are made to Terminal Block TB-3.
S TB3-30 Analog Input 1 +
S TB3-29 Analog Input 1 –
S TB3-28 Analog Input 2 +
S TB3-27 Analog Input 2 –
S TB3-26 Analog Input 3 +
S TB3-25 Analog Input 3 –
S TB3-24 Analog Input 4+
S TB3-23 Analog Input 4 –

Analog Outputs

The Discrete card contains four programmable 11-bit digital to analog
outputs. These outputs allow a

±

1024 times 2 or

±

2048 drive signal to be

converted to a

±

10V DC analog output, thus giving 9.76 millivolts per bit

resolution. Through programming of associated Scale and Offset
parameters the effective range of the Drive signal can be extended to

±

32767. The digital Drive signal can be any of the 1395 run-time

parameters. External connections are made to Terminal Block TB-3.
S TB3-37 Analog Output 1 +
S TB3-36 Analog Output 2 +
S TB3-35 Analog Output 3 +
S TB3-34 Analog Output 4 +
S TB3-41 Analog Output 1 –
S TB3-40 Analog Output 2 –
S TB3-39 Analog Output 3 –
S TB3-38 Analog Output 4 –

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