Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Input voltage | 120 V DC; 230 V DC; 120 V AC; 230 V AC |
| Output voltage | 5 V DC; 24 V DC |
| Backplane bus output, 5 V DC | Maximum 4 A; no base load required |
| Backplane bus output, 24 V DC | Maximum 0.5 A; idling-proof |
| Line frequency | 50 Hz; 60 Hz; permissible range from 47 Hz to 63 Hz |
| Stored energy time | 20 ms during mains or voltage failure |
| Required slots | 1 |
| Active power input, typ. | 52 W |
| Power loss, typ. | 20 W |
| Short-circuit protection | Yes |
| Backup battery | Optional; 1x lithium AA; 3.6 V / 2.2 Ah |
| 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 outputs.
Key Features
- Wide-range input: Rated input values are 120 V DC, 230 V DC, 120 V AC, and 230 V AC.
- Backplane bus output: The supply provides 5 V DC, maximum 4 A, for the backplane bus with no base load required.
- 24 V DC output: The 24 V DC backplane bus output is maximum 0.5 A and idling-proof.
- Line frequency: Rated line frequency is 50 Hz or 60 Hz, with a permissible range from 47 Hz to 63 Hz.
- Protection and buffering: It has short-circuit protection, 20 ms stored energy time during mains or voltage failure, and mains buffering according to NAMUR recommendation.
- Installation and isolation: The unit requires 1 slot, provides primary/secondary potential separation, and has equipment protection class I with protective conductor.
Frequently Asked Questions
1. What function does the Siemens 6ES7407-0DA02-0AA0 perform?
It is a SIMATIC S7-400 PS407 power supply for the backplane bus.
2. What input voltages does the PS407 support?
Rated input values are 120 V DC, 230 V DC, 120 V AC, and 230 V AC.
3. What are the backplane bus output ratings?
The 5 V DC output is maximum 4 A with no base load required, and the 24 V DC output is maximum 0.5 A and idling-proof.
4. What mounting space is required?
The power supply requires 1 slot.
