4 Cabling the AC 800F
4-4
When installing power supply module SA 811F, observe the following rules:
• Prior to connecting it to the mains voltage, first plug the power supply module
into the AC 800F and fasten it with screws.
• The power supply module has no mains switch, provide a double-pole one.
• It is recommended to usea2ATfusetoIEC/EN60127-2/V, ceramic cartridge
5 x 20 mm, high breaking capacity, melt index of at least 4 A
2
s e.g. Wickmann,
type 181.
Do not use fuses with a smaller melt index.
• Power cable: copper, cross-sectional area 0.75 mm
2
• Provide a functional grounding as described in Section 3.2.
• When using the AC 800F on a 115 - 230 V AC mains, make sure that it is
equipped with a SA 811F power supply module.
• Lay the mains cable separately (not too close to communication cables), as
seen in the following illustration.
Fig. 4-4 Laying cables of power supply module SA 811F
• Power supply module SA 811F has a 115 - 230 V AC input and outputs a 5 V
and 3.3 V voltage. It suppresses mains noise, acts as a buffer for up to 20 ms
with a minimum input voltage in case of a power failure, and generates a power-
fail signal.
• Power cable TK 808F with European plug is available for connection to a
European socket.
At present, the power supply module SA 811F can be run with CPU
board PM 803F only with software version 7.1 or higher.
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