Allen-Bradley 1734-OB8S User Manual

180 Rockwell Automation Publication 1734-UM013N-EN-P - September 2017
Appendix C Specifications
Safety Analog Input Module Specifications
IEC temp code T4
Enclosure type rating None (open-style)
Wiring category
(2)
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 28.8 V DC module supply and maximum power dissipated for all eight outputs in
the ON state.
(2) Use this conductor category information for planning conductor routing. See the Industrial Automation Wiring and Grounding
Guidelines, publication 1770-4.1
.
Attribute 1734-IE4S Series A
Safety Analog Input
Inputs per module 4 single-ended
Input type Software-configurable for voltage, current, or tachometer
Input voltage mode ranges ±5V, ±10V, 0…5V, 0…10V
Input current mode ranges 0…20 mA, 4…20 mA
Input tachometer mode ranges 0…24V with configurable ON and OFF thresholds in 1V increments
Voltage code range Bipolar modes: -32768/+32767
Unipolar modes: 0/+32767
Current code range (4…20 mA mode) -8192…32767
Tachometer code range 0…1000
Voltage overrange thresholds @ ±10V: 10.0V
@0 …10V: 10.0V
@±5V: 5.0V
@0…5V: 5.0V
Voltage underrange thresholds @ ±10V: -10.0V
@0 …10V: 0.5V
@±5V: -5.0V
@0…5V: 0.25V
Current overrange thresholds @ 0…20 mA: 20.0 mA @4…20 mA: 20.0 mA
Current underrange thresholds @ 0…20 mA: 0.5 mA @4…20 mA: 4.0 mA
Tachometer frequency range 1…1000 Hz
Tachometer overrange threshold 1 kHz
ADC resolution 12 bits
Filter Single-pole anti-aliasing filter:
• Filter frequency = 10 Hz
Followed by four-pole digital filter
Available corner frequencies, approx.
• 1 Hz
• 5 Hz
• 10 Hz
• 50 Hz
Step response to 63% (approx.)
(1)
Filter frequency @ 1 Hz = 450 ms
Filter frequency @ 5 Hz = 125 ms
Filter frequency @ 10 Hz = 72 ms
Filter frequency @ 50 Hz = 25 ms
Attribute 1734-OB8S Series A

Allen-Bradley 1734-OB8S Specifications

General

Brand	Allen-Bradley
Model	1734-OB8S
Category	Control Unit
Language	English