PPD113 B03-26-100110 ABB Central Processing Unit (CPU) Module Warranty

PPD113 B03-26-100110 ABB Central processing unit (CPU) module warranty

PPD113 B03-26-100110 ABB Central processing unit (CPU) module warranty

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Under normal circumstances, the power supply required by AC 800M Controller

and associated field equipment can be obtained from the plant’s standard

120/230 V AC mains supply.

Mains Net Filter

It is not necessary to use mains net filters when using the SD831/832/833/834

power supply units.

Mains Breaker

A mains breaker must be installed in the immediate vicinity of a controller

installation to allow for immediate total power supply disconnection to the

equipment, should the need arise. However, the prime function of the mains breaker

is to provide a means of isolating the power supply completely during maintenance.

The mains breaker must be installed in a location where it is both easily accessible

and clearly visible, that is, outside any enclosure or cabinet.

Protective Earth (PE)

Always install a protective earth connection on equipment connected to a

115/230 V AC supply.

For electrical safety reasons all conductive parts, such as the DIN-rail or the

conductive parts to which the rail is fastened, are required to be connected to PE.

The safety aspect that requires such a PE-connection is due to e.g. in-cabinet wiring

providing basic insulation only or accidental touch/connection (e.g. loose wires) of

hazardous voltages to conductive metal parts.

The connection shall fulfill the requirements in IEC61131-2 for PE connections,

that is: A conductor which, having a static current of 30 A flowing through,

measures a voltage drop which corresponds to <0.1 ohm.

ABB strongly recommends that the equipment PE-conductor should be of 35 mm2

(2 AWG) cross section if copper lead.