178 Rockwell Automation Publication 1734-UM013N-EN-P - September 2017
Appendix C Specifications
1734-IB8S temperature vs. current derating for both
horizontal and vertical installations
Residual voltage, max 0.3V
Output leakage current, max 0.1 mA
Short circuit protection Yes
POINTBus™
POINTBus current, max 175 mA
Power dissipation, max
(1)
3.4 W
Power dissipation, typical 2.44 W
Thermal dissipation, max 11.62 BTU/hr
Isolation voltage 50V (continuous), Basic Insulation Type between field
side and system
No isolation between individual channels
Type tested at 707V DC for 60 s
Power bus, operating supply voltage 24V DC nom
Power bus, operating voltage range 19.2…28.8V DC
Power bus current (No Load), max 25 mA
Input filter time, OFF to ON
(2)
0…126 ms (in 6 ms increments)
Input filter time, ON to OFF
(2)
Indicators 1 yellow lock status indicator
1 green/yellow power status indicator
8 I/O channel status indicators
Keyswitch positions (left and right) 1734-IB8S: Key 1 = 8 (left); Key 2 = 1 (right)
1734-OB8S: Key 1 = 8 (left); Key 2 = 2 (right)
North America temp code T4
IEC temp code T4
Enclosure type rating None (open-style)
Wiring category
(3)
2 - on signal ports
Wire size Determined by installed terminal block
Terminal block torque Determined by installed terminal block
Weight, approx 62.4 g (2.2 oz)
Dimensions (HxWxD), approx (without terminal block) 77 x 25 x 55 mm (3.03 x 0.98 x 2.17 in.)
(1) Maximum power dissipation applies when using 28.8V DC module supply, 30V DC on all inputs and maximum power dissipated
with all four test outputs in the ON state.
(2) Input off-to-on filter time is the time from a valid input signal to recognition by the module. Input on-to-off time is the time from a
valid input signal to recognition by the module.
(3) Use this conductor category information for planning conductor routing. See the Industrial Automation Wiring and Grounding
Guidelines, publication 1770-4.1
.
Attribute 1734-IB8S Series A
2.8 A
-20 °C
(-4 °F)
40 °C
(104 °F)
55 °C
(131 °F)
2.0 A
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