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1756-OX8I
ControlLogix 8 Pt Digital Relay Module
Product at a glance
Build America, Buy America
Product at a glance
Build America, Buy America
| Isolation |
250 V continuous between outputs
|
|---|---|
| Number Of Channels |
8
|
| Suitable for safety functions |
False
|
|---|---|
| Digital inputs configurable |
False
|
| Digital outputs configurable |
False
|
| Voltage type of supply voltage |
DC
|
| Type of voltage (input voltage) |
DC
|
| Type of digital output |
Relay
|
| Type of electric connection |
Screw connection
|
| Bounce time, mean |
1.2 µs
|
| Total backplane power |
2.9 W
|
| Thermal dissipation |
10.57 btu/h
|
| Current draw |
100mA @ 5.1V, 100mA @ 24V
|
| Expected contact life |
300 kHz, resistive, 100 kHz, inductive
|
| Module keying |
Electronic, software configurable
|
| Outputs |
8 N.O., 8 N.C. individually isolated (two points per group)
|
| Scheduled outputs |
Synchronization within 16.7 s max, reference to the coordinated system time
|
| Power dissipation, max |
3.1 W @ 60 °C (140 °F)
|
| Contact current rating |
1A @ 5...30V DC, 0.5A @ 48V DC, 0.22A @ 125V DC, 1.5A @ 120V AC, 50/60 Hz, 0.75A @ 240V AC, 50/60 Hz
|
| Isolation voltage |
250V (continuous), basic insulation type, outputs-to-backplane, and output-to-output
|
| Wire category |
Wire category: 1
|
| Fusing |
Not protected. A fused IFM is recommended to help protect outputs
|
| Redundancy |
False
|
| Short-circuit protection, outputs available |
False
|
| Pilot duty |
C300, R150
|
| Initial contact resistance, max |
100 mΩ @ 6V @ 1A
|
| Switching frequency, max |
1 ops/3 s (0.3 Hz at rated load)
|
| States in fault mode per point |
Hold last state, On or Off (Off is default)
|
| States in program mode per point |
Hold last state, On or Off (Off is default)
|
| Slot width |
1
|
|---|---|
| RTB keying |
User-defined mechanical
|
| Shock |
Operating: 30 G, Non operating: 50 G
|
| Vibration |
2 G @ 10...500 Hz
|
| Surrounding air temperature, max |
60 °C
|
|---|---|
| North American temperature code |
T4A
|
| Emissions |
IEC 61000-6-4
|
| ESD immunity |
6 kV contact discharges, 8 kV air discharges
|
| Relative humidity |
5...95% noncondensing
|
| Conducted RF immunity |
10V rms with 1 kHz sine-wave 80% AM from 150 kHz...80 MHz
|
| EFT/B immunity |
±4kV @ 5kHz on signal ports
|
| Operating temperature |
0 to 60 °C
|
| Surge transient immunity |
±1 kV line-line (DM) and ±2 kV line-earth (CM) on signal ports
|
| Radiated RF immunity |
10 V/m with 1 kHz sine-wave 80% AM from 80...2000 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz, 3 V/m with 1 kHz sine-wave 80% AM from 2000...2700 MHz
|
| Nonoperating temperature |
-40 °C
|
| Oscillatory surge withstand |
IEEE C37.90.1: 3kV
|
| Off-state leakage current per point, max |
0 mA
|
|---|---|
| Load current per point, min |
10 mA
|
| Output delay time |
OFF to ON: 13 ms maximum, ON to OFF: 13 ms maximum
|
| Operating voltage |
5...125V DC @ 10...240V AC
|
|---|
| Enclosure type |
None (open-style)
|
|---|
| Drawings | |
|---|---|
| 3-Dimensional STEP model (STP) | Download (ZIP) |
| Product Drawing | Drawing (DWG) |
| Product Drawing | Drawing (DXF) |
| Drawings |
|---|
| 3-Dimensional STEP model (STP) Download (ZIP) |
| Product Drawing Drawing (DWG) |
| Product Drawing Drawing (DXF) |
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| Type | Resource | Publication |
|---|---|---|
| General | Technical Detail | -- |
| General | Selection Guide | 1756-SG001 |
| General | Product Cutsheet | -- |
| General | Product Profile | -- |
| Technical Data | 1756-td002_-en-e | 1756-TD002 |
Looking for more documentation?
Find curated technical documentation for this product in the Technical Documentation Center, or search our full Literature Library.
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Available Downloads
- Firmware for 1756-OX8I v3.003
- AOP - Add On Profiles for 1756 Discrete I/O v40.12.22
- Safety
- CE
- Australian RCM
- Eurasion Economic Community
This product was certified with the above certifications as of 2025-11-24. Products sold before or after this date might carry different certifications. Please review the product label to check for the certifications your specific product carries.
Looking for more Technotes?
Find questions and answers from Rockwell Automation technical experts for this product in our Knowledgebase.
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Technical Specifications
| Isolation |
250 V continuous between outputs
|
|---|---|
| Number Of Channels |
8
|
| Suitable for safety functions |
False
|
|---|---|
| Digital inputs configurable |
False
|
| Digital outputs configurable |
False
|
| Voltage type of supply voltage |
DC
|
| Type of voltage (input voltage) |
DC
|
| Type of digital output |
Relay
|
| Type of electric connection |
Screw connection
|
| Bounce time, mean |
1.2 µs
|
| Total backplane power |
2.9 W
|
| Thermal dissipation |
10.57 btu/h
|
| Current draw |
100mA @ 5.1V, 100mA @ 24V
|
| Expected contact life |
300 kHz, resistive, 100 kHz, inductive
|
| Module keying |
Electronic, software configurable
|
| Outputs |
8 N.O., 8 N.C. individually isolated (two points per group)
|
| Scheduled outputs |
Synchronization within 16.7 s max, reference to the coordinated system time
|
| Power dissipation, max |
3.1 W @ 60 °C (140 °F)
|
| Contact current rating |
1A @ 5...30V DC, 0.5A @ 48V DC, 0.22A @ 125V DC, 1.5A @ 120V AC, 50/60 Hz, 0.75A @ 240V AC, 50/60 Hz
|
| Isolation voltage |
250V (continuous), basic insulation type, outputs-to-backplane, and output-to-output
|
| Wire category |
Wire category: 1
|
| Fusing |
Not protected. A fused IFM is recommended to help protect outputs
|
| Redundancy |
False
|
| Short-circuit protection, outputs available |
False
|
| Pilot duty |
C300, R150
|
| Initial contact resistance, max |
100 mΩ @ 6V @ 1A
|
| Switching frequency, max |
1 ops/3 s (0.3 Hz at rated load)
|
| States in fault mode per point |
Hold last state, On or Off (Off is default)
|
| States in program mode per point |
Hold last state, On or Off (Off is default)
|
| Slot width |
1
|
|---|---|
| RTB keying |
User-defined mechanical
|
| Shock |
Operating: 30 G, Non operating: 50 G
|
| Vibration |
2 G @ 10...500 Hz
|
| Surrounding air temperature, max |
60 °C
|
|---|---|
| North American temperature code |
T4A
|
| Emissions |
IEC 61000-6-4
|
| ESD immunity |
6 kV contact discharges, 8 kV air discharges
|
| Relative humidity |
5...95% noncondensing
|
| Conducted RF immunity |
10V rms with 1 kHz sine-wave 80% AM from 150 kHz...80 MHz
|
| EFT/B immunity |
±4kV @ 5kHz on signal ports
|
| Operating temperature |
0 to 60 °C
|
| Surge transient immunity |
±1 kV line-line (DM) and ±2 kV line-earth (CM) on signal ports
|
| Radiated RF immunity |
10 V/m with 1 kHz sine-wave 80% AM from 80...2000 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz, 3 V/m with 1 kHz sine-wave 80% AM from 2000...2700 MHz
|
| Nonoperating temperature |
-40 °C
|
| Oscillatory surge withstand |
IEEE C37.90.1: 3kV
|
| Off-state leakage current per point, max |
0 mA
|
|---|---|
| Load current per point, min |
10 mA
|
| Output delay time |
OFF to ON: 13 ms maximum, ON to OFF: 13 ms maximum
|
| Operating voltage |
5...125V DC @ 10...240V AC
|
|---|
| Enclosure type |
None (open-style)
|
|---|
Drawings
| Drawings | |
|---|---|
| 3-Dimensional STEP model (STP) | Download (ZIP) |
| Product Drawing | Drawing (DWG) |
| Product Drawing | Drawing (DXF) |
| Drawings |
|---|
| 3-Dimensional STEP model (STP) Download (ZIP) |
| Product Drawing Drawing (DWG) |
| Product Drawing Drawing (DXF) |
Sign in to your Rockwell Automation account to view and download technical drawings.
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Documents
|
Technical Detail
General
-- |
|
Selection Guide
General
1756-SG001 |
|
Product Cutsheet
General
-- |
|
Product Profile
General
-- |
|
1756-td002_-en-e
Technical Data
1756-TD002 |
| Type | Resource | Publication |
|---|---|---|
| General | Technical Detail | -- |
| General | Selection Guide | 1756-SG001 |
| General | Product Cutsheet | -- |
| General | Product Profile | -- |
| Technical Data | 1756-td002_-en-e | 1756-TD002 |
Looking for more documentation?
Find curated technical documentation for this product in the Technical Documentation Center, or search our full Literature Library.
Visit the Technical Documentation Center
Search the Literature Library
Downloads
Available Downloads
- Firmware for 1756-OX8I v3.003
- AOP - Add On Profiles for 1756 Discrete I/O v40.12.22
Certifications
- Safety
- CE
- Australian RCM
- Eurasion Economic Community
This product was certified with the above certifications as of 2025-11-24. Products sold before or after this date might carry different certifications. Please review the product label to check for the certifications your specific product carries.
Alternative Products
Technotes
Looking for more Technotes?
Find questions and answers from Rockwell Automation technical experts for this product in our Knowledgebase.
Search Knowledgebase
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