Rossmount transmitter garbled characters
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I have a Rosemount 3051 transmitter at home; it doesn’t receive power. After taking it for repair, it now displays random characters when connected to the safety barrier. What’s going on? ? When connected separately to 24 volts, the display works normally, but the current is 37 MA
Confirm the safety barrier specifications.
What I’m trying to say is: have you connected the safety barrier incorrectly? Check its model – it’s meant to be connected to the AI terminals, but you’ve connected it to the AO outputs instead
The safety barrier is connected correctly; it’s the AI input port that’s the issue
Before the repair, the voltage at the safety barrier was around 18 volts; after the repair it dropped to around 12 volts. Moreover, the 475 device can no longer be connected, while the safety barrier remains the same as before
Connect a 250 ohm resistor in the circuit; try using 475 instead, or replace the safety barrier.
I wonder where you took it to get repaired. Also, this device has a maximum output of around 22 milliamps; I’ve never seen a value of 37 before. I suggest trying to use a power bank for power supply, such as a module that converts 220V to 24V, which can be plugged in at the office, or a signal generator that can provide 24V.
1. “When connected separately to 24 volts, the display works normally, but the current is 37 mA.” 2. “Before repairs, the voltage across the safety barrier was around 18 volts; after the repairs, it dropped to around 12 volts.” 3. Hehehe. . . Congratulations, :P. . . Tell me who gave it to you, Xiu Bai~~~ :lol
That’s how 37MA came about