ABB AC 800F

5 AC 800F Functional Description
5-9
EEPROM
serial, 512 bytes, 10
7
write cycles
Protective separation
from other circuits
not necessary, since device must be
supplied with extra low voltage
For more detailed information about the power supply module and the AC 800F as a
unit please refer to Section 9, Technical data of the AC 800F.
5.1.4 Power supply module SD 812F, input voltage 24 V DC
Features
- Two redundant power supply inputs, 24 V DC ± 25 % with EMC filter.
- 3.3 V DC, ± 3 %, 6.5 A and 5.0 V DC, ± 3 %, 5.5 A; output voltages with step
down switch controllers. Total output power 35 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. 5-10 Block diagram of power supply module SD 812F