Hi all,
I'm hoping to get some advice from you guys who may be familiar with these Allen-Bradley devices. We are using an A-B CompactLogix PLC with 5069 series controller. The 5069 analog I/O modules for use with this controller are 5069-IF8 (differential current/voltage) and 5069-IY4. The IY4 is able to take thermocouple and RTD inputs along with diff current and voltage. The user manual (Compact 5000 I/O Analog Modules User Manual) for both of these modules state that 3-wire analog devices "are not supported regardless of the channel mode configuration." I have a flow meter that is a 3-wire device and its wiring is as shown below:
I am a little confused by the user manual b/c the installation manual for 5069-IY4 (Compact 5000 Analog 4-channel Current/Voltage/RTD/Thermocouple Input Modules) shows the 3-wire wiring diagram below. Couldn't I wire as shown by the single-ended current diagram? The signal wire (Ch) to Input 0+, 24V+ (brown wire) to power supply 24+, my flow meter blue wire to ground, and the power supply 24- to the same common ground.
Or for the 5069-IF8 module, couldn't I wire something like this:
I'm hoping to get some advice from you guys who may be familiar with these Allen-Bradley devices. We are using an A-B CompactLogix PLC with 5069 series controller. The 5069 analog I/O modules for use with this controller are 5069-IF8 (differential current/voltage) and 5069-IY4. The IY4 is able to take thermocouple and RTD inputs along with diff current and voltage. The user manual (Compact 5000 I/O Analog Modules User Manual) for both of these modules state that 3-wire analog devices "are not supported regardless of the channel mode configuration." I have a flow meter that is a 3-wire device and its wiring is as shown below:
I am a little confused by the user manual b/c the installation manual for 5069-IY4 (Compact 5000 Analog 4-channel Current/Voltage/RTD/Thermocouple Input Modules) shows the 3-wire wiring diagram below. Couldn't I wire as shown by the single-ended current diagram? The signal wire (Ch) to Input 0+, 24V+ (brown wire) to power supply 24+, my flow meter blue wire to ground, and the power supply 24- to the same common ground.
Or for the 5069-IF8 module, couldn't I wire something like this:
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