The main parameters of Allen - Bradley 1756 - A4 are as follows:
Product Type: PLC/Programmable Logic Controller
Number of Slots: 4
Mounting Style: Horizontal back - panel mounting
Enclosure Type: Open
Dimensions: 50.8 cm (20 inches) in height, 50.8 cm (20 inches) in width, and 20.3 cm (8 inches) in depth
Weight: Approximately 0.75 kg (1.65 pounds)
Power Dissipation: 4 watts
Power Consumption: 1.8 watts
Thermal Power: 6.1 British Thermal Units (BTU) per hour
Backplane Current: 1.5 amperes at 1.2 volts DC, 4 amperes at 3.3 volts DC, 15 amperes at 5.1 volts DC, and 2.8 amperes at 24 volts DC
Operating Temperature Range: 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit)
Storage Temperature Range: - 40 to 85 degrees Celsius (- 40 to 185 degrees Fahrenheit)
Relative Humidity Range: 5% to 95% non - condensing
Vibration Frequency Range: 10 to 500 hertz