Technical specifications, features, applications and purchasing information.
| Brand | Allen-Bradley |
| Model | 2085-OB16 |
| Product Category | Digital Output Module |
| Manufacturer | Rockwell Automation |
| Product Family | Micro800 |
| Module Series | Bulletin 2085 Expansion I/O |
| Output Circuit Type | 24 VDC Sourcing |
| Number of Output Channels | 16 |
| Output Channel Arrangement | Outputs 0–7 and 8–15 |
| Nominal Output Voltage | 24 VDC |
| Operating Output Voltage Range | 10–30 VDC |
| Minimum On-State Voltage | 10 VDC |
| Maximum On-State Voltage | 30 VDC |
| Maximum Current per Output | 0.5 A at 30 VDC |
| Maximum Total Output Current | 8 A per Module |
| Maximum On-State Voltage Drop | 1.0 VDC at 0.5 A |
| Maximum Off-State Leakage Current | 1 mA at 30 VDC |
| Maximum Turn-On Time | 0.1 ms |
| Maximum Turn-Off Time | 1 ms |
| Field Power Supply | 24 VDC, Class 2 |
| Maximum Backplane Current Draw | 200 mA at 5 VDC |
| Total Power Dissipation | 5 W |
| Output Status Indicators | 16 Yellow Channel LEDs |
| Continuous Isolation Voltage | 50 V |
| Isolation Type-Test Voltage | 720 VAC for 60 Seconds |
| Wiring Category | Category 2 on Signal Ports |
| Solid Copper Wire Size | 0.34–2.5 mm², 22–14 AWG |
| Stranded Copper Wire Size | 0.20–2.5 mm², 22–14 AWG |
| Minimum Conductor Temperature Rating | 90°C |
| Maximum Conductor Insulation Diameter | 1.2 mm |
| Insulation Stripping Length | 10 mm |
| Terminal Screw Torque | 0.5–0.6 N·m |
| Compatible Controller Families | Micro850 and Micro870 |
| Expansion Bus Interface | Micro800 Expansion I/O Port |
| Required Bus Terminator | 2085-ECR |
| Compatible DIN Rail | 35 × 7.5 mm |
| Panel Mounting Screws | Two M4 / #8 Screws per Module |
| Dimensions, H × W × D | 44.5 × 90 × 87 mm |
| Approximate Shipping Weight | 220 g |
| Recommended Installation Clearance | 50.8 mm on All Sides |
| Enclosure Type | Open-Type Equipment |
| Operating Temperature | -20 to +65°C |
| Storage Temperature | -40 to +85°C |
| Relative Humidity | 5–95%, Noncondensing |
| Maximum Altitude Without Derating | 2000 m |
| Operating Vibration | 2 g at 10–500 Hz |
| Operating Shock | 25 g |
| Installation Environment | Pollution Degree 2, Overvoltage Category II |
| North American Temperature Code | T4 |
| Removal and Insertion Under Power | Not Supported |
| Product Lifecycle Status | Active |
| UPC | 885630082318 |
| Related Sinking Output Module | 2085-OV16 |
| Related Relay Output Module | 2085-OW16 |
The Allen-Bradley 2085-OB16 provides 16 discrete sourcing transistor outputs for compatible Micro800 programmable controllers. It is designed to switch 12/24 VDC industrial loads through correctly wired and protected external field circuits.
Each output supports a maximum on-state current of 0.5 A at 30 VDC, with an 8 A maximum total module output current. Engineers must verify individual load current, total simultaneous loading and the external supply capacity before installation.
The module connects to compatible Micro850 and Micro870 controllers through the Micro800 expansion I/O bus. Additional discrete outputs can be incorporated into PLC-controlled machinery without replacing the existing controller, subject to its supported expansion configuration.
Sixteen yellow status LEDs indicate individual output-channel activity, supporting wiring checks, controller commissioning and troubleshooting of discrete control signals in industrial automation equipment.
Two 12-pin removable terminal blocks provide connections for the 16 output channels and associated power terminals. The removable wiring arrangement assists maintenance, but the terminal blocks and module must not be inserted or removed while powered.
The 2085-OB16 measures 44.5 × 90 × 87 mm and supports DIN rail or panel mounting. Its open-type design requires an appropriate control enclosure, with a 2085-ECR bus terminator installed at the end of the expansion I/O assembly.
We support online purchase of the Allen-Bradley 2085-OB16 Digital Output Module. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
What is the Allen-Bradley 2085-OB16?
It is a Rockwell Automation Micro800 digital output expansion module providing 16 sourcing DC transistor outputs for compatible Micro850 and Micro870 programmable controllers.
How many digital outputs does the module provide?
The 2085-OB16 has 16 discrete output channels, numbered 0 through 15 and wired through two removable terminal blocks.
What is the output voltage range?
The specified output operating voltage range is 10–30 VDC, with 24 VDC as the nominal on-state voltage.
What is the maximum current per output?
Each output is rated for a maximum of 0.5 A at 30 VDC. The connected load must remain within the output's voltage and current limits.
What is the maximum total output current?
Rockwell Automation specifies a maximum total output current of 8 A per module. Both this module-level limit and the 0.5 A per-channel limit must be respected.
Is the 2085-OB16 a sourcing or sinking module?
The 2085-OB16 is a sourcing output module. It supplies positive DC voltage to connected loads when an output is energized, with the return circuit connected according to the manufacturer wiring diagram.
What is the difference between 2085-OB16 and 2085-OV16?
Both have 16 DC transistor outputs with the same nominal voltage class. The 2085-OB16 uses sourcing outputs, whereas the 2085-OV16 uses sinking outputs. Their field wiring and compatible load arrangements differ.
Which PLC controllers are compatible with 2085-OB16?
The module belongs to the expansion I/O range designed for supported Micro850 and Micro870 controllers. Confirm the exact controller model, firmware and maximum permitted number of expansion modules.
Does the module require external 24 VDC field power?
Yes. The output circuits use an appropriate 24 VDC Class 2 field supply. The module also draws up to 200 mA at 5 VDC from the expansion backplane.
Does the module include status LEDs?
Yes. It has 16 yellow channel indicators for checking the commanded state of the individual outputs.
Can the 2085-OB16 directly control a solenoid valve?
It may control a compatible 12/24 VDC solenoid load when the load current, voltage, wiring and transient suppression meet the manufacturer's specifications. Loads exceeding the output rating require appropriately selected interface equipment.
Can the module switch 120 VAC or 240 VAC loads directly?
No. The 2085-OB16 is a 10–30 VDC transistor output module. AC loads require a suitably rated interposing device or an appropriate relay output module.
Does the expansion system require a bus terminator?
Yes. The last expansion I/O module requires a 2085-ECR bus terminator. Rockwell Automation warns that omitting the terminator results in a controller hard fault.
Can the module be installed on a DIN rail?
Yes. It supports mounting on a 35 × 7.5 mm DIN rail or direct panel mounting with appropriate M4 or #8 screws.
Can the removable terminal blocks be disconnected while power is on?
No. The module does not support removal and insertion under power. Disconnect the appropriate power sources before removing the terminal blocks or module, following the installation safety instructions.
What is the operating temperature range?
The specified operating range is -20 to +65°C, with 5–95% noncondensing relative humidity. The open-type module must be housed in an appropriate industrial enclosure.
What should be checked before ordering?
Confirm the exact catalog number 2085-OB16, 16 sourcing transistor outputs, 10–30 VDC operating range, 0.5 A per-channel and 8 A total current limits, external 24 VDC Class 2 field supply, Micro850 or Micro870 controller compatibility, removable terminal blocks, required 2085-ECR terminator, DIN rail or panel mounting and the distinction from the sinking 2085-OV16 module.
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| Brand | Allen-Bradley |
| Model | 2085-OB16 |
| Product Category | Digital Output Module |
| Manufacturer | Rockwell Automation |
| Product Family | Micro800 |
| Module Series | Bulletin 2085 Expansion I/O |
| Output Circuit Type | 24 VDC Sourcing |
| Number of Output Channels | 16 |
| Output Channel Arrangement | Outputs 0–7 and 8–15 |
| Nominal Output Voltage | 24 VDC |
| Operating Output Voltage Range | 10–30 VDC |
| Minimum On-State Voltage | 10 VDC |
| Maximum On-State Voltage | 30 VDC |
| Maximum Current per Output | 0.5 A at 30 VDC |
| Maximum Total Output Current | 8 A per Module |
| Maximum On-State Voltage Drop | 1.0 VDC at 0.5 A |
| Maximum Off-State Leakage Current | 1 mA at 30 VDC |
| Maximum Turn-On Time | 0.1 ms |
| Maximum Turn-Off Time | 1 ms |
| Field Power Supply | 24 VDC, Class 2 |
| Maximum Backplane Current Draw | 200 mA at 5 VDC |
| Total Power Dissipation | 5 W |
| Output Status Indicators | 16 Yellow Channel LEDs |
| Continuous Isolation Voltage | 50 V |
| Isolation Type-Test Voltage | 720 VAC for 60 Seconds |
| Wiring Category | Category 2 on Signal Ports |
| Solid Copper Wire Size | 0.34–2.5 mm², 22–14 AWG |
| Stranded Copper Wire Size | 0.20–2.5 mm², 22–14 AWG |
| Minimum Conductor Temperature Rating | 90°C |
| Maximum Conductor Insulation Diameter | 1.2 mm |
| Insulation Stripping Length | 10 mm |
| Terminal Screw Torque | 0.5–0.6 N·m |
| Compatible Controller Families | Micro850 and Micro870 |
| Expansion Bus Interface | Micro800 Expansion I/O Port |
| Required Bus Terminator | 2085-ECR |
| Compatible DIN Rail | 35 × 7.5 mm |
| Panel Mounting Screws | Two M4 / #8 Screws per Module |
| Dimensions, H × W × D | 44.5 × 90 × 87 mm |
| Approximate Shipping Weight | 220 g |
| Recommended Installation Clearance | 50.8 mm on All Sides |
| Enclosure Type | Open-Type Equipment |
| Operating Temperature | -20 to +65°C |
| Storage Temperature | -40 to +85°C |
| Relative Humidity | 5–95%, Noncondensing |
| Maximum Altitude Without Derating | 2000 m |
| Operating Vibration | 2 g at 10–500 Hz |
| Operating Shock | 25 g |
| Installation Environment | Pollution Degree 2, Overvoltage Category II |
| North American Temperature Code | T4 |
| Removal and Insertion Under Power | Not Supported |
| Product Lifecycle Status | Active |
| UPC | 885630082318 |
| Related Sinking Output Module | 2085-OV16 |
| Related Relay Output Module | 2085-OW16 |
The Allen-Bradley 2085-OB16 provides 16 discrete sourcing transistor outputs for compatible Micro800 programmable controllers. It is designed to switch 12/24 VDC industrial loads through correctly wired and protected external field circuits.
Each output supports a maximum on-state current of 0.5 A at 30 VDC, with an 8 A maximum total module output current. Engineers must verify individual load current, total simultaneous loading and the external supply capacity before installation.
The module connects to compatible Micro850 and Micro870 controllers through the Micro800 expansion I/O bus. Additional discrete outputs can be incorporated into PLC-controlled machinery without replacing the existing controller, subject to its supported expansion configuration.
Sixteen yellow status LEDs indicate individual output-channel activity, supporting wiring checks, controller commissioning and troubleshooting of discrete control signals in industrial automation equipment.
Two 12-pin removable terminal blocks provide connections for the 16 output channels and associated power terminals. The removable wiring arrangement assists maintenance, but the terminal blocks and module must not be inserted or removed while powered.
The 2085-OB16 measures 44.5 × 90 × 87 mm and supports DIN rail or panel mounting. Its open-type design requires an appropriate control enclosure, with a 2085-ECR bus terminator installed at the end of the expansion I/O assembly.
We support online purchase of the Allen-Bradley 2085-OB16 Digital Output Module. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
What is the Allen-Bradley 2085-OB16?
It is a Rockwell Automation Micro800 digital output expansion module providing 16 sourcing DC transistor outputs for compatible Micro850 and Micro870 programmable controllers.
How many digital outputs does the module provide?
The 2085-OB16 has 16 discrete output channels, numbered 0 through 15 and wired through two removable terminal blocks.
What is the output voltage range?
The specified output operating voltage range is 10–30 VDC, with 24 VDC as the nominal on-state voltage.
What is the maximum current per output?
Each output is rated for a maximum of 0.5 A at 30 VDC. The connected load must remain within the output's voltage and current limits.
What is the maximum total output current?
Rockwell Automation specifies a maximum total output current of 8 A per module. Both this module-level limit and the 0.5 A per-channel limit must be respected.
Is the 2085-OB16 a sourcing or sinking module?
The 2085-OB16 is a sourcing output module. It supplies positive DC voltage to connected loads when an output is energized, with the return circuit connected according to the manufacturer wiring diagram.
What is the difference between 2085-OB16 and 2085-OV16?
Both have 16 DC transistor outputs with the same nominal voltage class. The 2085-OB16 uses sourcing outputs, whereas the 2085-OV16 uses sinking outputs. Their field wiring and compatible load arrangements differ.
Which PLC controllers are compatible with 2085-OB16?
The module belongs to the expansion I/O range designed for supported Micro850 and Micro870 controllers. Confirm the exact controller model, firmware and maximum permitted number of expansion modules.
Does the module require external 24 VDC field power?
Yes. The output circuits use an appropriate 24 VDC Class 2 field supply. The module also draws up to 200 mA at 5 VDC from the expansion backplane.
Does the module include status LEDs?
Yes. It has 16 yellow channel indicators for checking the commanded state of the individual outputs.
Can the 2085-OB16 directly control a solenoid valve?
It may control a compatible 12/24 VDC solenoid load when the load current, voltage, wiring and transient suppression meet the manufacturer's specifications. Loads exceeding the output rating require appropriately selected interface equipment.
Can the module switch 120 VAC or 240 VAC loads directly?
No. The 2085-OB16 is a 10–30 VDC transistor output module. AC loads require a suitably rated interposing device or an appropriate relay output module.
Does the expansion system require a bus terminator?
Yes. The last expansion I/O module requires a 2085-ECR bus terminator. Rockwell Automation warns that omitting the terminator results in a controller hard fault.
Can the module be installed on a DIN rail?
Yes. It supports mounting on a 35 × 7.5 mm DIN rail or direct panel mounting with appropriate M4 or #8 screws.
Can the removable terminal blocks be disconnected while power is on?
No. The module does not support removal and insertion under power. Disconnect the appropriate power sources before removing the terminal blocks or module, following the installation safety instructions.
What is the operating temperature range?
The specified operating range is -20 to +65°C, with 5–95% noncondensing relative humidity. The open-type module must be housed in an appropriate industrial enclosure.
What should be checked before ordering?
Confirm the exact catalog number 2085-OB16, 16 sourcing transistor outputs, 10–30 VDC operating range, 0.5 A per-channel and 8 A total current limits, external 24 VDC Class 2 field supply, Micro850 or Micro870 controller compatibility, removable terminal blocks, required 2085-ECR terminator, DIN rail or panel mounting and the distinction from the sinking 2085-OV16 module.
