5 AC 800F Functional Description
5-7
5.1.3 Power supply module SD 802F, input voltage 24 V DC
Features
- Two redundant power supply inputs, 24 V DC ± 25 % with EMC filter.
- 3.3 V DC, ± 3 %, 5 A and 5.0 V DC, ± 3 %, 5 A; output voltages with step down
switch controllers. Total output power 26.5 W
- Input and output voltage monitoring, power-fail signal.
- Overcurrent delimiter, permanently short-circuit proof
- More than 20 ms bridging in case of power failure
- Automatic selection of power supply input
- Diagnostic interface (with EMC filter)
- EEPROM for manufacturing and diagnostic data
- Status indicators and operating elements for AC 800F CPU board
Block diagram
Fig. 5-7 Block diagram of power supply module SD 802F
Connector pin assignment
DC mains connector
Use the ready-made TK 802F
power cable for connecting a
24 V DC supply voltage, see
Section 4.1.5.
Fig. 5-8 Pin assignment of DC mains connector
Note that power supply module SD 802F must be supplied with extra
low voltage with protective separation from other circuits.
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