Allen-Bradley 1770-P1 AC to DC Power Supply Unit

Allen-Bradley 1770-P1 Power Supply is an external PLC-5 power source that converts AC line voltage into the DC rails used by PLC-5 logic and analog modules. It accepts nominal input voltages of 120 VAC or 220/240 VAC, with input ranges of about 105–125 V for 120 V operation and 205–250 V for high-voltage operation, drawing up to 20 W of real power (37 VA apparent; up to 50 VA transformer load). The unit provides three regulated outputs: +5 V DC at up to 300 mA, +15 V DC at up to 150 mA, and -15 V DC at up to 150 mA, enabling both logic circuitry and PLC-5 analog circuitry to run from a single external supply. Its compact stand-alone form factor measures approximately 3.5 x 6.5 x 2.0 inches (89 x 165 x 51 mm) and is designed specifically to power PLC-5 racks with a dedicated external power source.