VOXI User’s Guide
9
3.3 Electrical Connections
Two conduit holes are provided in the explosion-proof housing, one covered by a hex-head plug
and the other for wire connections. To unscrew and remove the cover, first loosen the lock screw
located on the side, using a Allen wrench. Pinch the buckles on both sides of the instrument
assembly to release and then lift it out. Unplug the three terminal block plugs on the PC board.
The schematic below shows the internal wiring connections. Insert the wire through the conduit
hole and connect to the corresponding pin numbers of the three terminal blocks on the bottom of
the assembly. These blocks accept 12AWG to 24AWG wire (0.2 to 4.0 mm
2
).
Input power
requirements are <5W, 12-30 VDC. An external ground wire (AWG11 recommend) must be
connected to the VOXI housing reliably.
Terminal Blocks
Terminal
Block
Plugs
Lock Screw
