Ross ACO-4400A, User Manual, Page: 16 / 112

1–4 • Introduction ACO-4400A User Manual (Iss. 03)
Functional Block Diagram
This section provides the functional block diagram that outlines the workflow of the
ACO-4400A.
Figure 1.1 ACO-4400A — Functional Diagram
*Including unmonitored multi-way channels
BACKUP
PEAK
DETECT
PRIMARY
PEAK
DETECT
PRIMARY
LEVEL
CHECK
BACKUP
LEVEL
CHECK
Output
Primary Input
Secondary Input
RELAY
OTHER CHANNELS
OTHER CHANNELS
OTHER CHANNELS
LOGIC
DECODE
Other Channel Relays*
Operating Status/
Fault Indications
Auto / Manual
Primary / Backup
LCD
DISPLAY
REFERENCE
GENERATORS