Dood
Member
Hi,
I have a 4-20mA Electromagnetic Flow meter which is externally powered. I have a 24VDC supply powering the meter (which is powering up correctly - screen lights up and shows values etc.)
I am using a Siemens SM-1234 4AI card. Separate from the power, I have my "0+" on the AI module hooked up to "I+" on the flowmeter and the "0-" on the AI Module hooked up to "COM" on the flowmeter. When I power up the rack - the red fault light comes on the card and the processor.
Any idea what I am doing incorrectly? Thanks!
I have a 4-20mA Electromagnetic Flow meter which is externally powered. I have a 24VDC supply powering the meter (which is powering up correctly - screen lights up and shows values etc.)
I am using a Siemens SM-1234 4AI card. Separate from the power, I have my "0+" on the AI module hooked up to "I+" on the flowmeter and the "0-" on the AI Module hooked up to "COM" on the flowmeter. When I power up the rack - the red fault light comes on the card and the processor.
Any idea what I am doing incorrectly? Thanks!