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Chapter 5 Functional Description
Functional Block Description of the 58502A
User’s Guide 5-3
Functional Block Description of the
58502A
The 58502A electronic circuits consist of five primary blocks:
• Controller
• Panel LEDs
•2-to-1 Switch
• 1-to-12 Amplifiers and Isolators
• Power Supply Module
Figure 5-1 is a simplified, overall-block diagram the 58502A circuitry.
Figure 5-1. Simplified Block Diagram
+5 Vdc
input
select
output
condition
+15 Vdc
-15 Vdc
Controller
RS-232
Input A
Power
(AC )
Input B
Panel
LEDs
Alarm input
status
Alarm/status
Output 1
Output 2
Output 12
1- to -12
Amplifiers
and
Isolators
2- to -1
Switch
Power
Supply
Module