44 Communication Module
Trident Planning and Installation Guide
Specifications
Logic Power
Logic power is supplied by the MP Baseplate.
Feature Specification
Nominal input voltage 24 V DC
Specified operational voltage
range
24 V DC –15% or +20% + 5% AC ripple (19.2 to
30 V DC)
Logic power (without MAUs) 8 W maximum
10 Mb AUI-type MAU 6 W maximum additional per MAU
100 Mb MII-type MAU 3.75 W maximum additional per MAU
Absolute maximum input voltage 33 V DC
Absolute maximum reverse input
voltage
–0.6 V DC
Input power interruption time
from nominal value
1 ms maximum
Repetition rate 1 sec minimum
Reverse current isolation input to
input
500 µA maximum
Inrush current per input 2.4 A maximum, typically 1.2 A for 50 ms
Short circuit current limit per input 2.4 A maximum
Functional-to-logic ground
isolation
0 V, no isolation
Protective-to-functional-earth
isolation
500 V DC
+12 V AUI output power 12 V ±10%, 6 W maximum, current limited
+5 V MII output power 5 V ±5%, 3.75 W maximum, current limited
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