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Interface module (ifm), Analog inputs and outputs, Current loop transmitter – Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - ForGe Control (PanelView 550) User Manual

Page 128: Interface module (ifm) analog inputs and outputs

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Rockwell Automation Publication 7000-UM151E-EN-P - January 2013

Chapter 3 Component Definition and Maintenance

Interface Module (IFM)

The Interface Module makes all customer-usable connections to the ACB. The
pin numbers listed on the following pages refer to IFM pin numbers.

Figure 93 - Interface Module (IFM)

Analog Inputs and Outputs

The PowerFlex 7000 “B” Frame offers one isolated process current loop
transmitter and three isolated process current loop receivers, embedded into the
control. These are accessible on the ACB.

The isolated Process Output is configured as 4-20 mA. The three isolated process
inputs are individually configurable for either a range of -10/0/+10V or 4-20
mA.

The following information details the connections for each input and output.

Current Loop Transmitter

The current loop transmitter sends a 4-20mA output to an external receiver. The
loop compliance on the transmitter is 12.5V. Loop compliance is the maximum
voltage at which a transmitter can generate to achieve the maximum current and
is usually a function of the power supply voltage. Therefore, the PowerFlex 7000
“B” Frame transmitter can drive a receiver with an input resistance up to 625
ohms. The figure below shows a block diagram of the transmitter.

Even pin numbers

Odd pin numbers

Connection to ACB (J8)