1775-A2

The 1775-A2 model is an expansion chassis designed for Allen Bradley's PLC 3 series, featuring a versatile configuration suited for modular enhancements. This unit provides 6 available slots, enabling substantial flexibility for system upgrades and expansions.

It draws a backplane current of 5 A at 5 VDC and 80 mA at ±15V DC, ensuring efficient power management throughout its operations. Grounding is required for this chassis, emphasizing the importance of electrical safety in installations.

Mounting is facilitated through a standard 19-inch rack, allowing easy integration into existing racks or cabinets. Operating conditions are broad, with a temperature range of 0 to 60°C supported, while capable of withstanding storage conditions up to 85°C. Additionally, the chassis can operate effectively within relative humidity levels from 5% to 95%, provided it remains non-condensing.

The device relies on free-flow convection for cooling, which helps maintain optimal operating temperatures without the need for additional ventilation or active cooling systems. The incorporation of LED status indicators assists users in monitoring the health and power status of the chassis, ensuring quick identification of any potential issues. Peripheral connectivity is facilitated via a 25-pin parallel output, allowing for straightforward information transfer between the chassis and other devices.