Manual

Publication 1756-UM009C-EN-P - December 2010 317
Analog I/O Module Specifications Appendix A
Current draw @ 24V 225 mA for 0...550 W loads terminated on OUTs and RTNs
(Total backplane power in this range 6.7 W)
300 mA for 551...1000 W loads terminated on OUTs and ALTs
(Total backplane power in this range 8.5 W)
Power dissipation, max 5.5 W (0…550 Ω loads)
6.1 W (551…1000 Ω loads)
Thermal dissipation 18.76 BTU/hr (0…550 Ω loads)
20.80 BTU/hr (551…1000 Ω loads)
Open circuit detection None
Overvoltage protection 24V DC
Short circuit protection Electronically current limited to 21mA or less
Drive capability 0…1000 Ω
Separate field terminations for 0…550 Ω and 551…1000 Ω
Settling time < 2 ms to 95% of final value with resistive loads
Calibrated accuracy 4…21 mA: better than 0.1% of range @ 25 °C (77 °F)
Calibration interval 6 months
Offset drift 1 μA/°C
Gain drift with temperature 60 ppm/°C, 100 ppm/°C max
Module error 0.6% of range
Module scan time 25 ms max floating point
10 ms max integer
Isolation voltage 250V (continuous), basic insulation type, output
channels-to-backplane, and output channel-to-channel
Routine tested at 1350V AC for 2 s
Removable terminal block 1756-TBNH
1756-TBSH
Slot width 1
Wire size
0.33…2.1 mm
2
(22…14 AWG) solid or stranded copper wire
rated at 90 °C (194 °F), or greater, 1.2 mm (0.047 in.)
insulation max
(1)
Wire category
2
(2)
North American temperature code T4A
IEC temperature code T4
Enclosure type None (open-style)
(1)
Maximum wire size requires extended housing, catalog number 1756-TBE.
(2)
Use this conductor category information for planning conductor routing as described in the system-level
installation manual. See the Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1.
Technical Specifications - 1756-OF6CI
Attribute 1756-OF6CI