Factory settings for analog output
#unique_54/unique_54_Connect_42_c_FactorySettingsForAnalogOutputSwitches-
fig3-58 shows how to wire up to six devices to the analog outputs that are located on the
backplane.
Wire customer externally-powered analog outputs
It is possible to furnish power to each analog output while maintaining isolation between
channels.
Consult #unique_55/unique_55_Connect_42_t_WiringAndSwitchSettingsForCustomer-
PoweredAnalogOutputs-fig3-60 before wiring a customer-powered device:
Procedure
Use #unique_55/unique_55_Connect_42_t_WiringAndSwitchSettingsForCustomer-
PoweredAnalogOutputs-fig3-60 to provide power wiring to each analog output while
maintaining isolation between channels.
Optional analog outputs
When plugged into one of the optional card slots on the card cage, the ROC800 AO card
provides four additional analog outputs. Each channel provides a 4 to 20 mA current signal
for controlling analog current loop devices.
For more information, see Emerson's ROC 800-Series website.
Connect ROC800 analog output (AO) module to a field device
Procedure
1. Expose the end of the wire to a maximum length of ¼ in. (6.4 mm).
Note
Emerson recommends using twisted-pair cables for in/out (I/O) signal wiring. The
module’s terminal blocks accept wire sizes between 12 and 22 American wire
gauge (AWG). Expose minimal bare wire to prevent short circuits. Allow some slack
when making connections to prevent strain.
2. Insert the exposed end into the clamp beneath the termination screw.
3. Tighten the screw.
4. Close the electronics enclosure door and apply power to the gas chromatograph
(GC).
5. Run MON2020 and connect to the GC.
2.4.15
Configure analytical train
Use the Analytical Train Configuration window for multiple analysis clocks to assign the
valve, digital outputs (DO), and detectors to each train and then assign each train to its
respective analysis clock.
Installation and start-up Quick Start Guide
July 2020 00825-0100-3770
44 Emerson.com/Rosemount
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