Power supply
The panel PC is supplied with a nominal voltage of 24 V. The power supply and the protective earth of the device are connected via the 8-pin voltage socket (X110). The main supply voltage is applied between PIN 5 (0 V) and PIN 6 (24 V) of the socket. If the panel PC is equipped with an integrated uninterruptible power supply (UPS), an external battery pack can additionally be connected to PIN 1 and PIN 2. Beckhoff offers the C9900-U330 and C9900-U332 battery packs for this purpose.
Pin | Signal | Description |
|---|---|---|
1 | - BAT | Negative pole of the battery pack |
2 | + BAT | Positive pole of the battery pack |
3 | 27 V UPS | 27 V UPS output 2.5 A, negative is pin 1 "- BAT" |
4 |
| Protective earth |
5 | - | 24 V supply voltage, negative pole |
6 | + 24 V | 24 V supply voltage, positive pole |
7 | PC-ON | Input PC-ON |
8 | P-S | Power Status output, minus is the negative pole of the supply voltage |
The plug for the power supply is specified for 16 A and can accommodate wire cross-sections of up to 1.5 mm2. For long supply lines, use 1.5 mm2 cables to achieve a low voltage drop on the supply line. At least 22 V should be present at the voltage connector of the panel PC so that the PC remains switched on in the event of voltage fluctuations. The plug is included in the delivery. You can obtain a replacement plug from your Beckhoff Sales using the following ordering option:
- C9900-P926: power supply connector for CP27xx Panel PC