Pneumatic control valve
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Can a short circuit caused by contact between the electrical signal wires of a pneumatic control valve damage the module?
Are you referring to the signal wire of the valve positioner? If that’s the case, it won’t happen. You can use a multimeter to create a short circuit, and what is measured will be the output current of AO.
No, it seems there are sparks; it’s quite scary when that happens during production
It won’t happen, don’t worry; it often short-circuits accidentally
This won’t happen, but it should be avoided when performing on-site repairs and wiring removal.
It’s okay, but it will burn out the safety barrier, especially those old-style ones; it seems that modern safety barriers can handle short circuits just fine
There’s a fuse before we enter this module
There are two scenarios for a short circuit in the signal line of a pneumatic valve: one is a short circuit in the return line, that is, the feedback line; this does not affect the pneumatic valve or the control room module, as it is originally a switch signal. Secondly, if there is a short circuit in the wiring of the solenoid valve, it usually burns out the circuit fuse in the control room; in the absence of such a fuse, the power supply will be damaged.
It’s usually fine for a short period of time, but problems arise over longer durations