The 771-OJA is a programmable logic controller (PLC) manufactured by Allen-Bradley. Here's a breakdown of the information I found online:
Features:
The 1771-OJA is a compact modular PLC designed to control industrial automation processes.
It can read inputs from sensors and switches, make decisions based on programs, and send control signals to actuators (such as motors, valves) to automatically perform various tasks.
Specifications (limited information) :
Manufacturer: Allen-Bradley
Product Number: 1771-OJA
Applications: Industrial automation, process control, machine control
Unfortunately, without data sheets or specific model information, it is challenging to determine the exact specifications and features of the 1771-OJA. However, based on similar part numbers and Allen-Bradley's product line, it has the following features:
Digital and analog input/output (I/O) points for connecting various sensors and actuators.
Built-in communication for connecting other devices or control systems.
Ladder diagram logic programming language for defining control programs.
.Allen-Bradley's 1771-OJ PLC 5 Pulse Output expander module is a component of the stepper motor positioning assembly that provides programmable control of the programmable controller stepper motor and provides modular axis expansion from 1 to 3 axes per I/O chassis. The expander module consumes 800mA current at 5V DC backplane current and uses an auxiliary power supply with a power rating of +5-30V DC, a maximum of 340mA (Max), and a peak-to-peak ripple less than the specified value of the stepper converter. The 1771-OJ supports two input modes (JUG and STOP), in JUG mode the input signal delay time from 1 axis to 3 axis is 35-120ms, and in STOP mode the signal delay time is 250ms.
The 1771-OJ has a voltage range of 1.0V (high level) and 0.8V DC (low level) and a built-in 1.6 kilo-ω pull resistor compatible with open-collector logic devices. At 5V DC and 30V DC, the maximum conduction current per input is 2.3mA, at 30V DC, the output voltage range is -2.6V DC (high), at 100mA output current is +0.7V DC (low), and the maximum output current of the module is 100mA. The 1771-OJ has a worst-case rise/fall time of 0.6ms at a maximum current of 100mA and a 50% pulse duty cycle. The module uses a 40-foot Belden 8771 stranded copper wire, one wire per terminal, which is keyed to the I/O backplane by inserting connector bands between pins 8 and 10 and 22 and 24. The 1771-OJ operates at a temperature range of 0-60 0C and a non-condensing humidity of 5-95%. The module is CE, CSA, UL, and C-TICK certified.
