Electrical Installation - ABB Endura AZ40 Manual

4

Electrical installation

DANGER – Serious damage to health / risk to life
— An external isolation device such as a switch or
circuit breaker conforming to local safety standards
must be fitted to the incoming mains power supply
cable prior to the transmitter. It must be fitted in
close proximity to the transmitter, within easy reach
of the operator and marked clearly as the isolation
device for the transmitter.
The internal sensor power switch on the transmitter
[SW1, see Fig. 20, page 17] is NOT a safety
isolation switch and is fitted for operational
purposes only.
— The probe must be bonded to local earth via the
external earth connection – see Fig. 20, page 17.
— Electrical installation and earthing (grounding) must
be in accordance with relevant national and local
standards.
— Remove all power from supply, relays and any
powered control circuits and high common mode
voltages before accessing or making any
connections.
— 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.
— The equipment conforms to Installation Category II of
IEC 61010.
— All equipment connected to the transmitter's
terminals must comply with local safety standards
(IEC 60950, EN61010-1).
USA and Canada Only
— The supplied cable glands are provided for the
connection of signal input and MODBUS
communication wiring ONLY.
— The supplied cable glands and use of cable / flexible
cord for connection of the mains power source to the
mains input and relay contact output terminals is not
permitted in the USA or Canada.
— For connection to mains (the mains input and relay
contact outputs), use only suitably rated field wiring
insulated copper conductors rated min. 300 V, 14
AWG, 90 °C. Route wires through suitably rated
flexible conduits and fittings.
12
CAUTION – Damage to equipment
— Make connections only as shown.
— Maintain environmental protection at all times.
— Ensure the seal and mating surfaces are clean to
maintain environmental rating.
– Ensure cable glands (if used) are tightened after
wiring. Do not overtighten the plastic cable glands to
avoid destroying their sealing properties. Initially,
tighten finger-tight, then a further
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.
Customer-supplied cable specification
Wiring at the transmitter / sensor mains power terminals must
conform to the following specification:
Rigid Flexible
solid stranded
2
0.2 to 6 mm 0.2 to 4 mm
Table 1 Mains power cable specifications
Wiring at all other transmitter / sensor terminals must conform to
the following specification:
Rigid Flexible
solid stranded
2
0.2 to 4 mm 0.2 to 2.5 mm
Table 2 Signal cable specifications
Temperature requirements – interconnecting cables
Signal: –20 to 105 °C (–4 to 221 °F)
Power: –40 to 105 °C (–40 to 221 °F) C(RU)AWM1/11 A/BFT1
1 3
/ to / turn using
2 4
AWG
2
24 to 10
AWG
2
24 to 12
CI/AZ40-EN Rev. A