The Allen-Bradley 1769-PA4 compact I/O power supply provides 120/240 volts AC power to 1769-L3x controllers and I/O modules. This power supply supports 8 I/O modules which can be installed easily to the right or to the left of this power supply. The 1769-PA4 has a power supply distance rating of 8 modules and supports two selectable input voltage rating ranges from 85 volts AC to 265 volts AC and from 170 volts AC to 265 volts AC at frequencies from 43 hertz to 63 hertz. This Allen-Bradley 4 amp power supply can provide 2 amps to the right side of this power supply and 2 amps to the left at a voltage rating of 5 volts DC. The Allen-Bradley 1769-PA4 delivers a maximum amount of current in both directions of 4 amps at 5 volts DC and 2 amps at 24 volts DC. This power supply can be employed by 1769-L3x controller or by additional bank of I/O modules. This Allen-Bradley 1769-PA4 compact power supply can be connected easily to an I/O module after or before mounting. The 1769-PA4 power supply can be mounted on well-grounded panels using four mounting M4 or #8 screws or on either EN 50 022 - 35 x 7.5 or EN 50 022 - 35 x 15 DIN rails. The 1769-PA4 dissipates an electrical power of 18 watts at a temperature of 60 degrees Celsius. This Allen-Bradley 1769-PA4 is intended for use in a mainly industrial environment that is clean and dry (Pollution degree 2) and overvoltage Category II applications as defined in IEC publication 60664-1. This Allen-Bradley 1769-PA4 power supply weighs approximately 525 grams (1.16 pounds) while shipping and can operate at a temperature range of 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit).

The 1769-PA4 is a power supply module from Allen-Bradley. This unit has compatibility for I/O modules that belong to the CompactLogix 1769 Compact line of products. This unit can only operate when supplied with an alternating current. It should be supplied with current anywhere in the range of 120 to 240 volts alternating current (AC). After receiving the power, this unit converts it into 24 volts direct current (DC). Users can select the input voltage range anywhere between 85 to 265 volts. When operating at 47 to 63 hertz of input frequency, this drive has an input voltage range of 170 to 265 volts alternating current. This unit can either be supplied with 4 amperes of current at 5 volts direct current or 2 amperes at 24 volts direct current.

At 120 volts alternating current, the 1769-PA4 has a maximum power consumption range of 200 volts-amperes. The inrush current upper threshold for this controller is 25 amperes at 132 volts alternating current. This unit should be supplied with 265 volts of continuous isolation voltage supplied from an alternating current power input. On each side, there are eight (8) I/O ports. This means the 1769-PA4 can accommodate a total of sixteen (16) I/O modules. The 1769-PA4 has a dimension of 2.76 x 3.43 x 4.65 inches. There is one (1) LED status indicator light, one (1) static & one (1) movable bus connector, one (1) lockable lever bus, one (1) safety cover, one (1) power supply door, and an internal fuse.