Hardware reference guide

I/O Modules
604
35013379 11/2011
The following figure shows the DAO84220 derating chart.
Surge Current Maximum (rms) Per Point Per Group
One Cycle 30 A 45 A
Two Cycles 20 A 30 A
Three Cycles 10 A 25 A
Applied DV/DT 400 V/μs
Output Protection RC snubber suppression (internal)
Isolation (rms)
Group to Group 1000 Vac for 1 minute. Galvanically Isolated.
Output to Bus 1780 for 1 minute
Fault Detection Blown fuse detect, loss of field power
Bus Current Required 350 mA
Power Dissipation 1.85 W + 1.1 V x Total Module Load Current
External Power Supply (rms) 20 ... 56 Vac
Fusing
Internal 5 A fuse for each group
(Part # 043502405 or equivalent)
For the location of the fuses see Fuse Locations,
page 605.
External User discretion
Specifications