Schneider P916 | Modicon PLC Power Supply Module 24V DC

The P916 supplies regulated DC power to Modicon PLC racks and modules. This power supply unit converts incoming AC voltage to stable 24V DC. It provides reliable energy for all backplane logic and I/O circuits. Consequently, your entire automation system receives clean, consistent power.

You can mount this module in any standard Modicon rack slot. The P916 accepts a wide input voltage range from 85V to 264V AC. It also includes overload protection and short-circuit current limiting. Therefore, this unit safeguards your expensive PLC components from electrical faults.

Output Specifications and Power Capacity

The module delivers 3 amps of continuous current at 24V DC. The P916 also provides 0.5 amps for the backplane’s 5V logic bus. Its total output power capacity reaches 70 watts under normal operation. A front-panel LED indicates when all outputs remain within specifications.

The power supply stores energy in a capacitor bank for ride-through. This energy storage maintains output during brief input voltage dips. The P916 holds up the 24V rail for approximately 20 milliseconds. Below is a complete breakdown of its technical characteristics.

Specification	Detail
Product Type	PLC Power Supply Module
Input Voltage	85V to 264V AC (47-63 Hz)
Output Voltage 1	24V DC at 3.0A
Output Voltage 2	5V DC at 0.5A (Backplane)
Total Output Power	70W (Maximum)
Efficiency	82% at nominal load
Hold-up Time	20 ms (At full load)
Energy Storage	Electrolytic capacitor bank (1500µF)
Dimensions (W x H x D)	45 mm x 130 mm x 120 mm
Weight	0.64 kg (640 grams)
Input Protection	Fuse (Non-user replaceable)

Interface Layout and Connection Points

The front panel features a 3-pin terminal block for AC input wiring. The P916 includes a separate 4-pin block for 24V DC distribution. A green LED confirms normal operation of both output voltages. The module also provides a removable grounding screw for safety.

This power supply connects to the backplane through a 2-pin power header. The P916 automatically senses input frequency from 47 to 63 Hz. It requires no manual voltage selection for different countries. Therefore, installation involves only connecting AC wires and rack mounting.

Operational Benefits for System Reliability

This power module protects your PLC during unstable grid conditions. The P916 handles input voltage fluctuations without disrupting controller operation. Its built-in thermal protection shuts down during excessive temperature conditions. Engineers trust this unit for continuous 24/7 industrial automation applications.