Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Module type | SIMATIC S7-400 PS407 power supply |
| Input voltage | 120 V AC, 230 V AC, 120 V DC, 230 V DC |
| 5 V DC backplane bus output | 20 A max.; no base load required |
| 24 V DC backplane bus output | 1 A max.; idling-proof |
| Required slots | 2 |
| Mains buffering | 20 ms stored energy time; according to NAMUR recommendation |
| Backup battery | Optional; 1x lithium AA; 3.6 V / 2.2 Ah |
| Active power input | 158 W, typ. |
| Power loss | 35 W, typ. |
| Protection | Short-circuit protection; equipment protection class I with protective conductor |
Applications
- Backplane bus power supply: Supplies the SIMATIC S7-400 backplane bus with 5 V DC and 24 V DC output power.
Key Features
- Wide-range input: Rated input values are 120 V AC, 230 V AC, 120 V DC, and 230 V DC.
- Backplane bus output: Maximum output current is 20 A for the 5 V DC backplane bus and 1 A for the 24 V DC backplane bus.
- Line frequency: Rated line frequency is 50 Hz or 60 Hz, with a permissible range from 47 Hz to 63 Hz.
- Power and protection: Typical active power input is 158 W, typical power loss is 35 W, and short-circuit protection is provided.
- Installation and isolation: The power supply requires 2 slots, provides primary/secondary potential separation, and has equipment protection class I with protective conductor.
Frequently Asked Questions
1. What output does the 6ES7407-0RA02-0AA0 provide for the backplane bus?
It provides up to 20 A at 5 V DC and up to 1 A at 24 V DC for the backplane bus.
2. What input voltages and line frequencies does this PS407 support?
Rated input values are 120 V AC, 230 V AC, 120 V DC, and 230 V DC. Rated line frequency is 50 Hz or 60 Hz, with a permissible range from 47 Hz to 63 Hz.
3. How many slots does the power supply require?
The power supply requires 2 slots.
