The power supplies supply the S7-400 modules with their 5 V DC and 24 V DC operating voltages via the backplane bus.
Power supplies are available for AC line voltages of 85 to 264 V and for DC voltages of 19.2 to 300 V.
One power supply module is required per rack.
Exception:
With interfaces with current transfer, the power supply module in the central controller also supplies all modules in the expansion units.
The load voltage for supplying sensors and actuators must be made available separately.
There are also power supplies to make both the standard system and the H system fail-safe (redundant power supplies).
Siemens Power Supply S7-400 Product Specifications:
| Article number |
6ES7405-0KA02-0AA0 |
|
SIMATIC S7-400, PS 405 POWER |
| Supply voltage |
|
| Rated value (DC) |
|
| ● 24 V DC |
Yes |
| ● 48 V DC |
Yes |
| ● 60 V DC |
Yes |
| Mains buffering |
|
| ● Mains/voltage failure stored energy time |
20 ms |
| ● Mains buffering according to NAMUR recommendation |
Yes |
| Input current |
|
| Rated value at 24 V DC |
4 A |
| Rated value at 48 V DC |
2 A |
| Rated value at 60 V DC |
1.6 A |
| Inrush current, max. |
18 A; Full width at half maximum 20 ms |
| output voltage / header |
|
| Type of output voltage |
DC |
| Rated value (DC) |
|
| ● 5 V DC |
Yes |
| ● 24 V DC |
Yes |
| Output current |
|
| for backplane bus (5 V DC), max. |
10 A; no base load required |
| for backplane bus (24 V DC), max. |
1 A; idling-proof |
| Short-circuit protection |
Yes |
| Power |
|
| Active power input, typ. |
95 W |
| Power loss |
|
| Power loss, typ. |
20 W |
| Battery |
|
| Backup battery |
|
| ● Backup battery (optional) |
Yes; 2x lithium AA; 3.6 V / 2.3 Ah |
| Hardware configuration |
|
| Slots |
|
| ● required slots |
2 |
| Potential separation |
|
| primary/secondary |
Yes |
| Isolation |
|
| Overvoltage category |
II |
| Degree and class of protection |
|
| Equipment protection class |
I, with protective conductor |
| Standards, approvals, certificates |
|
| FM approval |
Yes; Ta: 0 °C to 60 °C T4 |
| CCC |
Yes |
| Ambient conditions |
|
| Ambient temperature during operation |
|
| ● min. |
0 °C |
| ● max. |
60 °C |
| connection method / header |
|
| Design of electrical connection |
3x 1.5 mm², solid or stranded wire with end sleeve, external diameter 3 mm to 9 mm |
| Dimensions |
|
| Width |
50 mm |
| Height |
290 mm |
| Depth |
217 mm |
| Weights |
|
| Weight, approx. |
1 200 g |
