The Allen-Bradley 1756-OC8 is a high-performance digital output module from the ControlLogix family, engineered for precise control of DC loads in critical process and discrete manufacturing applications. Operating at 30-60V DC, this module offers 8 individually isolated outputs, each capable of sourcing up to 2A continuous current. Its rugged design includes built-in transient suppression and thermal protection, ensuring reliable operation in harsh industrial environments. The 1756-OC8 supports direct connection to a wide range of field devices such as motor starters, valves, and alarm systems, while its modular form factor allows for easy installation and replacement without disrupting adjacent modules. With a fast on/off response time of less than 1 millisecond, it is ideal for high-speed sequencing and safety interlocks. Backed by Rockwell Automation's proven reliability, this output module is a cornerstone for scalable, fault-tolerant control systems.
| Parameter |
Specification |
| Model Number |
1756-OC8 |
| Product Type |
Digital Output Module |
| Output Type |
Sourcing (PNP) – DC Voltage |
| Number of Outputs |
8 (Individually Isolated) |
| Output Voltage Range |
30-60V DC |
| Output Current per Point |
2 A at 40°C, derated to 1.5 A at 60°C |
| Output Current per Module |
8 A maximum (total) |
| On-State Voltage Drop |
Less than 1.5V at rated current |
| Off-State Leakage Current |
Less than 1 mA |
| Response Time (On to Off) |
Typically 0.5 ms |
| Response Time (Off to On) |
Typically 0.5 ms |
| Protection Features |
Overcurrent, short-circuit, thermal shutdown, transient suppression |
| Isolation Voltage |
1500V DC (output to backplane and output to output) |
| LED Indicators |
1 green LED per output (on/off status) |
| Backplane Current (5V) |
180 mA |
| Backplane Current (24V) |
0 mA (no backplane power required for outputs) |
| Operating Temperature |
0°C to 60°C (32°F to 140°F) |
| Storage Temperature |
-40°C to 85°C (-40°F to 185°F) |
| Relative Humidity |
5% to 95% non-condensing |
| Vibration Resistance |
5 g Standard Models 10-500 Hz (operating) |
| Shock Resistance |
30 g (operating) |
| Dimensions (H x W x D) |
144 mm x 35 mm x 105 mm (5.67 in x 1.38 in x 4.13 in) |
| Weight |
0.25 kg (0.55 lb) |
| Compatible Chassis |
ControlLogix 1756-series (all sizes) |
| Software Support |
RSLogix 5000, Studio 5000, Logix Designer |
| Certifications |
UL, CSA, CE, ATEX (Zone 2), IECEx (Zone 2), RoHS |
| Wiring Style |
Removable terminal block (screw-type, 14-22 AWG) |
| Module Status |
Active (New, Original, Factory-Sealed) |
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22