Electrical Installation; Electrical Safety - ABB Endura AZ series User Manual

Endura AZ series integral and remote transmitter
Combustion oxygen monitor

4 Electrical Installation

4.1 Electrical Safety

Warning.

The transmitter is not fitted with a switch therefore a disconnecting device such as a switch or
circuit breaker conforming to local safety standards must be fitted to the final installation. It must
be fitted in close proximity to the transmitter within easy reach of the operator and must be
marked clearly as the disconnection device for the transmitter – see Fig. 4.1, page 12.

Electrical installation and earthing (grounding) must be in accordance with relevant national and
local standards.

Remove all power from supply, relay and any powered control circuits and high common mode
voltages before accessing or making any connections.

Use cable appropriate for the load currents: 3-core cable rated 5 A and 90 °C (194 °F) minimum,
that conform to either IEC 60227 or IEC 60245. The terminals accept cables from 0.8 to 2.5 mm
(18 to 14 AWG).

The equipment conforms to Installation Category II of IEC 61010.

All connections to secondary circuits must have basic insulation.

After installation, there must be no access to live parts, for example, terminals.

Terminals for external circuits are for use only with equipment with no accessible live parts.

If the equipment is used in a manner not specified by the Company, the protection provided by
the equipment may be impaired.

All equipment connected to the transmitter's terminals must comply with local safety standards
(IEC 60950, EN61010-1).
Caution.

Always route signal leads and power cables separately, preferably in earthed (grounded) metal
conduit.

Make connections only as shown.

Maintain Environmental Protection at all times.

Ensure the seal and mating surfaces are clean to maintain environmental rating.

Conduit connections must provide cable entry sealing.

Ensure cable glands are tightened after wiring. Do not overtighten the plastic cable glands to
avoid destroying their sealing properties. Initially, tighten finger-tight, then a further
using a suitable spanner or wrench.

Fit blanking plugs where required.

Inductive loads must be suppressed or clamped to limit voltage swings.

Operation of outputs is programmable.
IM/AZ20E–EN Rev. F
4 Electrical Installation
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