Allen-Bradley 1756-OB8 Installation Instructions

Rockwell Automation Publication 1756-IN062A-EN-P - August 2017 8
ControlLogix DC Digital I/O Modules
Specifications: 1756-IC16, 1756-IG16, 1756-IN16, 1756-IV16, 1756-IV16K, 1756-IV32, 1756-IV32K, 1756-LSC8XIB8I, 1756-LSC8XIB8IK
Attribute 1756-IC16 1756-IG16 1756-IN16
1756-IV16,
1756-IV16K
1756-IV32,
1756-IV32K
1756-LSC8XIB8I,
1756-LSC8XIB8IK
Voltage and current ratings
Backplane: 5.1V DC,
135 mA, 24V DC, 3 mA
Inputs: 30…55V DC,
7 mA (60°C), and
30…60V DC, 7 mA
(55°C)
Backplane: 5.1V DC,
140 mA, 24V DC, 2 mA
Inputs: 0-5.5V DC, 4.1
mA (source)
Supply: 4.5-5.5V DC
160 mA
Backplane: 5.1V DC,
135 mA, 24V DC, 2 mA
Inputs: 10...30V AC,
50-60Hz, 25 mA
Backplane: 5.1V DC,
110 mA, 24V DC, 2 mA
Inputs: 10...30V
DC,1.5-10 mA/pin
(input)
Backplane: 5.1V DC,
175 mA, 24V DC, 2 mA
Inputs: 10...30V
DC,1.5-5 mA/pin
(input)
Backplane: 5.1V DC,
275 mA, 24V DC, 3 mA
Inputs: 10…30V DC,
5 mA max
Temperature, operating
• IEC 60068-2-1(Test Ad, Operating Cold)
• IEC 60068-2-2 (Test Bd, Operating Dry
Heat)
• IEC 60068-2-14 (Test Nb, Operating
Thermal Shock)
0 °C< Ta < 60 °C (32 °F< Ta < 140 °F)
Temperature, surrounding air, max 60 °C (140 °F)
Enclosure type rating None (open-style)
Isolation voltage
250V (continuous),
basic insulation type,
inputs-to-backplane
125V (continuous)
basic insulation type,
input group-to-group
No isolation between
individual group
inputs
250V (continuous), basic insulation type, inputs-to-backplane, and input group-to-group
No Isolation between individual group inputs
250V (continuous),
reinforced insulation
type,
inputs-to-backplane
250V (continuous),
basic insulation type,
input-to-input
North American temp code T4 T5 T3 C T4 A
ATEX temp code T4 T3 T4
IECEx temp code T4 T3 T4
Specifications: 1756-OB8, 1756-OB8EI, 1756-OB16D, 1756-OB16DK, 1756-OB16E, 1756-OB16EK, 1756-OB16I, 1756-OB16IEF, 1756-OB16IEFK
Attribute 1756-OB8 1756-OB8EI
1756-OB16D,
1756-OB16DK
1756-OB16E,
1756-OB16EK
1756-OB16I
1756-OB16IEF,
1756-OB16IEFK
Voltage and current ratings
Backplane: 5.1V DC,
165 mA, 24V DC, 2 mA
Output: 10…30V DC, 2 A
Pilot Duty (DC-13/SQ)
MDL: 8 A (60°C)
Backplane: 5.1V DC,
250 mA, 24V DC, 2 mA
Output: 10…30V DC, 2 A
Pilot Duty (DC-13/SQ)
MDL: 10 A/16 A 60°/55°C
Backplane: 5.1V DC,
250 mA, 24V DC, 140 mA
Output: 19.2…30V DC,
2 A Pilot Duty (DC-13SQ)
2 A/1 A 30°/60°C
MDL: 8 A/4 A 30°/60°C
Backplane: 5.1V DC,
250 mA, 24V DC, 2 mA
Output: 10…31.2V
DC, 1 A, 2 A Inrush
MDL OUT: 8 A max
(60°C)
Backplane: 5.1V DC,
350 mA, 24V DC, 2.5 mA
Output: 10...30V DC, 2 A
Pilot Duty (DC-13/SQ)
Backplane: 5.1V DC,
320 mA, 24V DC, 3 mA
Outputs: 10...30V DC,
1 A max, 60 °C (140 °F)
10…30V DC, 2 A,
45 °C (113 °F) per
channel (4 channels
max)
Temperature, operating
• IEC 60068-2-1(Test Ad,
Operating Cold)
• IEC 60068-2-2 (Test Bd,
Operating Dry Heat)
• IEC 60068-2-14 (Test Nb,
Operating Thermal Shock)
0 °C< Ta < 60 °C (32 °F< Ta < 140 °F)
Temperature, surrounding air,
max
60 °C (140 °F)
Enclosure type rating None (open-style)
Isolation voltage
250V (continuous), basic
insulation type,
outputs-to-backplane,
and output
group-to-group
No isolation between
individual group outputs
250V (continuous), basic
insulation type
outputs-to-backplane,
and output-to-output
250V (continuous), basic insulation type,
outputs-to-backplane, and output group-to-group
No isolation between individual group outputs
250V (continuous), basic
insulation type,
outputs-to-backplane
125V (continuous), basic
insulation type,
output-to-output
250V (continuous),
reinforced insulation
type,
outputs-to-backplane
250V (continuous),
basic insulation type,
output-to-output
North American temp code T4 A T4 T4 A T4
ATEX temp code T4
IECEx temp code T4

Allen-Bradley 1756-OB8 Specifications

General

Brand	Allen-Bradley
Model	1756-OB8
Category	Control Unit
Language	English