2.3.1 Electrical connections
Electrical connections, power, and communications are made to the electronic enclosure.
The connections are made through two 3/4 NPT ports in the enclosure using fittings and
cables provided by you. Cable installation must meet NEC, IEC, and/or other applicable
national or local codes for Class I, Zone 1, IIB +H2 T3/T6 permanently mounted equipment.
2.3.2 Connect line voltage
The OCX 8800 operates on 100 to 240 Vac line voltage at 50 to 60 Hz.
The power supply requires no setup. Connect the line (L wire) to the L terminal and the
neutral (N wire) to the N terminal on the AC power input termal block in the electronics
housing. Connect the ground (G wire) to the ground stud in the electronics housing shown
in Figure 2-4.
2.3.3 Connect output signals
The OCX 8800 may be provided with either two 4-20 mA signals with HART on the O
2
signal or a single Foundation Fieldbus signal.
Connect the output terminals in the electronics housing as shown in Figure 2-4. Use
individual shielded twisted wire pairs. Terminate the shield at the electronics housing.
2.3.4
O
2
4-20 mA signal
One 4-20 mA signal represents the O
2
value.
Superimposed on the O
2
signal is the HART information accessible through a Model 375
handheld communicator or AMS device manager softward. The O
2
signal is at the AOUT 1
terminals.
2.3.5
COe 4-20 mA signal
Another 4-20 mA signal at the AOUT 2 terminals represents the COe value.
2.3.6
Foundation Fieldbus signal
The Foundation Fieldbus signal provides all output information and is accessible through a
Model 375 handheld communicator.
2.3.7
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.
Install
Reference Manual 29
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