National Instruments 8-Channel Solid-State Relay (SSR) Digital Output NI 9485 - Manual (Page 6)

NI 9485 Operating Instructions 6 ni.com
Special Conditions for Hazardous Locations Use in Europe
This equipment has been evaluated as EEx nA II T4 equipment
under DEMKO Certificate No. 03 ATEX 0324020X. The
equipment is marked
II 3G and is suitable for use in
Zone 2 hazardous locations.
Wiring the NI 9485
The NI 9485 has a 16-terminal, detachable screw-terminal
connector that provides connections for eight solid-state relay
channels. Each channel has two interchangeable terminals, CHa
and CHb. Refer to Table 1 for the terminal assignments for each
channel.