Rockwell Automation 1791-IOBB USER MANUAL - Manual (Page 30)

Appendix
A
AĆ1
Specifications
General Specifications
External power 200mA @ 24V dc; initial surge 5.5A for 10 µ sec.
The supply must be able to source an additional 100mA
plus an inrush current of 400mA when a peripheral is
connected.
Environmental Conditions
Operating Temperature
Storage Temperature
Relative Humidity
32 to 131 o F (0 to 55 o C)
-40 to 185 o F (-40 to 85 o C)
5 to 95% noncondensing
Conductors Wire Size 14 gauge stranded (maximum)
3/64 inch insulation (maximum)
Power Dissipation IOBA/B: 13.94 Watts (maximum); 9.62 Watts (typical)
IOBB/B: 13.05 Watts (maximum); 8.92 Watts (typical)
Thermal Dissipation IOBA/B: 47.7 BTU/hr (maximum); 32.9 BTU/hr (typical)
IOBB/B: 44.6 BTU/hr (maximum); 30.5 BTU/hr (typical)
Remote I/O Isolation 850V dc (transformer) for 1 second
DH-485 Isolation 850V dc (optocoupler) for 1 second
Interconnect cable length RIO: PLC 57.6K 10,000 cable-feet
115.2K 5,000 cable-feet
230.4K 2,500 cable-feet
SLC 230.4K 2,500 cable-feet
DH-485 4000 ft (1219 meters)
Cable requirements RIO/DIO - Belden 9463
DH-485 - Belden 9842
1791-IOBA/B Input Specifications
Number of Inputs 8
Input type Sinking
Input voltage range 20.5 to 27.6V dc
On-state input current 6.5mA (minimum) @ 20.5V dc
On-state input voltage 20.5V dc (minimum)
Off-state voltage 6.0V dc (maximum)
Off-state current 1.5mA dc (maximum)
Turn On time 1.5msec (maximum)
Turn Off time 1.0msec (maximum)