I have a Solenoid Normally Open gas valve rated at 29VA. It can be operated using 220VAC or 12/24/48 VDC. When i power it with AC mains voltage, it draws only 3mA @ 220V and the valve closes. When i power it with 12VDC nothing happens. I've tried controlling it using an Arduino with TIP120 but still it only draws 15mA @ 12VDC with a TIP120. My calculations say that it should draw about 2.4A @ 12VDC whith the rated power 29VA. whats wrong? why isn't it working and is only drawing 15mA? *I'm powering it with a lab power supply rated @ 30VDC 5A by the way, just in case you needed to know.
It can be operated using 220VAC or 12/24/48 VDC
No it cannot.
The Eska EGV range is specified: -
- Working Voltage Range: 12V, 24V, 48V, 110V, 220V AC or DC (On request other voltages)
- Voltage Tolerance: ± %10
That does not mean that a 220 V AC coil will work at 12 volt. If you buy one rated for 220 V AC then it will work at 220 V AC +/- 10%.