Hi guy,
Sorry, this is not a PLC question, but it's something regarding wirings & power.
I'm checking a system which consists of many remote indicators. All indicators are 24V DC or AC supported. But the system are using 24V DC. When I test the supply at the indicator connector (2 wires), the test pen lighted up.
I taught test pen only lighted when we test on AC system? How can it be? Some other colleague also get a minor short when accidentally touched the cable (which lighted the test pen).
Any comments on this system wiring? Thank you.
Sorry, this is not a PLC question, but it's something regarding wirings & power.
I'm checking a system which consists of many remote indicators. All indicators are 24V DC or AC supported. But the system are using 24V DC. When I test the supply at the indicator connector (2 wires), the test pen lighted up.
I taught test pen only lighted when we test on AC system? How can it be? Some other colleague also get a minor short when accidentally touched the cable (which lighted the test pen).
Any comments on this system wiring? Thank you.