Emerson FB2200 Flow Computer Instruction Manual
D301784X012
March 2019
Installation 35
▪ Limit communication activity.
▪ Disable power to all I/O (except for the MV or static pressure sensor, or RTD). To do this, click
Configure > I/O Setup > I/O Configuration > Properties and select Disable for each I/O
module.
Figure 2-21. Module Power Control
2.10 Connecting Power
Power can come from an external DC supply or a lead acid battery pack with a solar panel.
Connecting DC Power
EXPLOSION HAZARD: Never remove end cap(s) in a hazardous location. Removing end cap(s) in a
hazardous location could result in an explosion.
When power comes from an external DC supply, connect using the +DCIN and –DCIN terminals.
Use standard copper wire (#18 AWG minimum). The device supports both 12V and 24V power
supplies. It accepts DC voltage from 10.5 to 30V; the amount of power required varies depending
upon the options used.
Important
If your installation uses DC power for main power, do not wire battery power as a secondary (back
up) power source. Certification only allows a single main power source; wiring both sources will
void your certification.
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