Description
Features The redundant power supply of an S7-400 has the following characteristics: The power supply module features an inrush current in accordance with NAMUR. Each of the power supply modules can take over the supply of power to the whole rack if the other one fails. There is no loss of operation. Each of the power supply modules can be exchanged while the system is in operation. No loss of power and no peak stress occurs with the effective voltages when the modules are removed or inserted. Each of the power supply modules monitors its function and sends a message if it fails. Neither of the power supply modules can generate an error which affects the output voltage of the other power supply module. A redundant battery concept (backup concept) is only provided when two backup batteries are used in each of the power supply modules. If only one battery is used in each module, only non-redundant backup is possible, since both batteries are being used at the same time. The failure of a power supply module is registered via a plug and remove interrupt (default STOP). If used in the second segment of the CR 2 no message is sent if the power supply module fails. If two power supply modules are inserted but only one is switched on, there is a power-up delay of up to one minute when the line voltage is switched on.
PS 407 10A and PS 407 10A R technical specifications
Dimensions, weight and cable cross-sections | |
Dimensions W x H x D (mm) Weight Cable cross-section | 50x290x217 1.2 kg 3x1.5 mm2 (stranded wire with wire end ferrule with insulating sleeve; use hose line only) |
Input variables | |
Input voltage | |
| 120/230 V DC |
| 88 to 300 V DC |
Line frequency | |
| 50/60 Hz |
| 47 to 63 Hz |
Rated input current | |
| 0.9 A |
| 1.0 A |
| 0.5 A |
| 0.5 A |
Inrush current | |
| Peak value 63 A, full width at half maximum 1 ms* |
| Peak value 58 A, full width at half maximum 1 ms* |
Leakage current | < 3.5 mA |
Output variables | |
Output voltage | |
| 5.1 V DC/24 V DC |
Output current | |
| 5 V DC: 10 A |
Parameters | |
Protection class pursuant to IEC 60536 | I, with protective conductor |
Overvoltage category | II |
Pollution degree | 2 |
Rated voltage Ue 0 < Ue ≤ 50 V 150 V < Ue ≤ 300 V | Test voltage 700 V DC (secondary <-> PE) 2200 V DC (primary <-> secondary/PE) |
Backup for power failures | > 20 ms at a repeat rate of 1 s, meets NAMUR recommendation NE 21 |
Power consumption | 95 W |
Power loss | 20 W |
Backup current | maximum of 100 µA when power off |
Back-up batteries (option) | 2 x lithium AA, |
Protective separation in accordance with IEC 61131-2 | Yes |
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