Input/Output Modules 89
Chapter 3 System Description
Model 3401 Digital Output Module Specifications
Feature Specification
Points 16, commoned
Nominal output voltage 24 V DC
Operational voltage range 15–30 V DC
Absolute maximum output voltage 33 V DC
Absolute maximum reverse input voltage –0.6 V DC
Output current
Switching <4.8 A, self-limiting
3 A, typical
Carry >0.7 A, self-limiting
1.5 A, typical
Field alarms Loss of field power, output point shorted
On or Off
Loop-back thresholds 0–5 V DC = Off region
6–14 V DC = transition region
15–30 V DC = On region
Leakage to load (Off-state) <1 mA
Diagnostic glitch duration <2 ms, maximum
500 µs, typical
Diagnostic fault coverage
Maximum toggle rate >20 ms
Minimum toggle rate Not applicable
On-state voltage drop <1 V DC @ 1.5 A
Loop-back scan time <1 ms for all 16 points
Functional-to-protective-earth isolation 500 V DC, minimum
Functional-to-functional-earth (logic)
isolation
800 V DC, minimum
To Next Page
Loading...