Emerson Rosemount OCX 8800 - Page 54

Rosemount OCX 8800 Defaults - HART ElectronicsFigure 3-1:
Switch default positions shown.
O
2
21.1 mA/3.5 mA: O
2
4-20 mA signal
Rail limits:
Open High - 21.1 mA
Closed Low - 3.5 mA
COe 21.1 mA/3.5 mA: COe 4-20 mA signal
Rail limits:
Open High - 21.1 mA
Closed Low - 3.5 mA
SW1: The two settings are internally or externally powering the O
2
4-20 mA signal. The
factory setting is for the O
2
4-20 mA signal to be internally powered.
SW2: The two settings are internally or externally powering the COe 4-20 mA signal. The
factory setting is for the COe 4-20 mA signal to be internally powered.
SW3: The factory sets this switch as follows:
Configuration and startup
44 OCX 8800