The MTL9111-NI and 9112-NI power supplies install on a DIN Rail and are
powered by a typical bulk 24 VDC power supply. The power supplies connect to
the segment wiring to power the fieldbus devices that are not self-powered. On
the top of each supply is a 3 pin connector for connection to the safe area
host fieldbus and a 3 pin connector for connection to the safe area 24 V power.
On the bottom of each supply is a 3 pin connector for connection to the NI
area. The following figure shows the connectors.
Figure: Connectors on the MTL 9111 and 9112-NI power
supplies
Note
The hazardous area wiring must remain separated from the safe area
wiring. This includes the shield drain wires as they must be separate wires all
the way to the ground connection.