Emerson Rosemount OCX 8800, Instruction Manual

Page: 50 / 306

Section 2:
Installation
April 2017
Instruction Manual
IM-106-880C, OI
26
COe 4-20 mA
Signal
2.4.5 COe 4-20 mA Signal
Another 4-20 mA signal at the AOUT 2 terminals represents the COe value.
2.4.6 Foundation Fieldbus Signal
The Foundation Fieldbus signal provides all output information and is accessible through a
Model 375 Handheld communicator.
2.4.7 Alarm Output Relay
Connect any customer-supplied relay input to the alarm output relay terminal. Use shielded wire
and terminate the shield at the electronics housing. The alarm output relay terminal is a set of
dry, no. 2, form C, contacts with 30 mA, 30 VDC capacity.
2.4.8 Remote Electronics Connections to Sensor Housing
Make the following connections between the remote electronics and sensor housings with the
electronics cable ordered with the package (
Figure 2-8 ). Braided cable is available in lengths up
to 150 ft. (46 m).
NOTE
Interconnect wiring shown is for Rosemount supplied cables. For customer furnished
interconnect wiring or cables, refer to Figure 2-9 .
2.4.9 Signal Connections
Connect the electronics housing terminals to the corresponding terminals in the sensor
housing. The twisted wire pairs are numbered on the inner plastic wrapper. Keep twisted pairs
together and match the numbers and wire colors shown in
Figure 2-8 .
2.4.10 Heater Power Connections
Use the blue, white, orange black, red, and yellow stranded wires in the heater power cable to
connect power to the three heaters in the sensor housing. Match the wire colors to the
corresponding heater power terminal blocks in the sensor and electronics housings as shown in
Figure 2-8 .