Description
The Allen-Bradley 1771-OZ is a PLC-5 relay contact output module designed to provide dependable discrete control signaling within the 1771 I/O chassis architecture. This single-slot module serves as an electromechanical interface between the programmable controller and external actuators, indicators, and control devices requiring isolated switching capability. It features built-in status indicators for each individual output channel to simplify diagnostic troubleshooting during system operation.
Engineered for standard industrial control environments, the 1771-OZ integrates directly into any available single slot within a compatible 1771 I/O chassis. The module handles low-voltage switching tasks while ensuring electrical isolation between the logic backplane and field-connected devices. During system power transitions, output channels may momentarily change state as the chassis power supply executes its initialization sequence.
Features
- Equipped with 8 Form A (Normally Open) relay contact output channels
- Supports operating voltage ranges from 0 to 24 VAC rms and 0 to 24 VDC
- Maximum continuous current rating of 100 mA per output
- Fast 1 ms maximum operate, release, and contact bounce response times
- Includes channel-level status indicators for immediate visual feedback of energized outputs
- Occupies a single slot in any standard 1771 I/O chassis architecture
Applications
- Interfacing low-voltage control logic with discrete actuators and indicators
- Switching low-level DC and AC control signals within PLC-5 rack systems
- Isolating sensitive controller electronics from external load transients
- Expanding discrete output capacity in legacy 1771 I/O distributed racks
Technical Specifications
| Parameter |
Specification |
| Manufacturer |
Allen-Bradley / Rockwell Automation |
| Product Type |
Relay Contact Output Module |
| Series |
PLC-5 (1771 I/O Platform) |
| Catalog Number |
1771-OZ |
| Outputs per Module |
8 Form A (Normally Open) |
| Voltage Rating |
0 to 24 VAC rms / 0 to 24 VDC |
| Current Rating per Output |
100 mA max. |
| Surge Current per Output |
100 mA max. at rated power |
| Power Rating per Output |
2.4W resistive (AC suppressed / DC) |
| Minimum Contact Load |
1 mA at 0 to 24V (AC/DC) |
| Operate / Release Time |
1 ms max. |
| Contact Bounce Time |
1 ms max. |
| Switching Frequency |
10 Hz max. |
| Backplane Current Draw |
420 mA max. |
| Power Dissipation |
2.0 to 2.2W |
| Thermal Dissipation |
6.9 to 7.6 BTU/hr |
| Isolation Voltage |
1 kV between open contacts, 1.5 kV between coil and contact |
| Slot Requirements |
1 single I/O chassis slot |
| Country of Origin |
United States |