Emerson Rosemount 928 Reference Manual page 109

Reference Manual
00809-0100-4928
You may also add an optional, customer-supplied alarm suppression button.
3.9.1 Connect an external alarm device
Complete the following steps to connect an external alarm device to the Rosemount
Procedure
1. On the Rosemount 928 main housing, remove the rear housing cover to expose the
2. On the Rosemount 928 main housing, remove one of the conduit plugs.
3. Route the barrier power and alarm output wiring into the Rosemount 928 main
4. Connect the wiring to the external device on the Rosemount 928 terminal block
terminal block.
A. +Barrier power
B. -Barrier power
C. +Output to alarm
D. -Output to alarm
E. +Comm terminal
F. -Comm terminal
Refer to Figure 3-2.
housing.
according to the terminal labels. Do one of the following:
Note
Shield alarm wiring for noise immunity.
• Perform four wire installation. This is the most common configuration. Refer to
the following diagram.
Installation
August 2018
™
928.
109