Rosemount 700XA - Page 39

Note
Form-C relays are single-pole double-throw (SPDT) relays that have three positions:
normally closed (NC); an intermediate position, also called the make-before-break position
(ARM); and normally open (NO).
Optional discrete digital inputs (DI)
When plugged into one of the optional card slots in the card cage, the Emerson ROC800
DI card provides eight additional discrete digital inputs. The discrete digital inputs can
monitor the status of relays, open-collector or open-drain type solid-state switches, and
other two-state devices. For more information, see ROC800-Series Discrete Input Module at
Emerson’s ROC 800-Series website at Emerson.com/en-us/catalog/emerson-roc800-series
Wire a ROC800 digital output (DO) module
Figure 2-13: Discrete Digital Output Wiring
CONTROL
DO
1+
2+
3+
4+
5+
COM
COM
COM
COM
COM
5 CHAN
DISCRETE DEVICE
EXTERNALLY POWERED
Terminal Label Definition
1 1+ Positive discrete output
2 COM Discrete output return
3 2+ Positive discrete output
4 COM Discrete output return
5 3+ Positive discrete output
6 COM Discrete output return
7 4+ Positive discrete output
8 COM Discrete output return
Quick Start Guide Installation and start-up
00825-0100-3770 July 2020
Rosemount 700XA 39