SI manual – Section: Cable Connections
11
WARNING:
Ensure all power
supplies are isolated before removing
actuator covers.
Check that the supply voltage
matches that stamped on the actuator
nameplate.
A switch or circuit breaker must be
included in the wiring installation of
the actuator. The switch or circuit
breaker must meet the relevant
requirements of IEC60947-1 and
IEC60947-3 and be suitable for the
application. The switch or circuit
breaker must not disconnect the
protective earth conductor. The switch
or circuit breaker must be mounted
as close to the actuator as possible
and shall be marked to indicate that
it is the disconnect device for that
particular actuator. The actuator must
be protected with a suitably rated
overcurrent protection device.
Power supply cables must have
sufficient mechanical protection
properties to meet installation
requirements and be screened to
comply with EMC requirements of the
installed actuator. Suitable methods
include armoured and/or screened
cables or cables contained within
conduit.
5.2 Earth/Ground Connections
A lug with a 6 mm diameter hole is
cast adjacent to the conduit entries for
attachment of an external protective
earthing strap by nut and bolt. An
internal earth connection is also
provided however it must not be
used alone as the protective earth
connection.
5. Cable Connections
5.1 Terminal Block Layout
Fig. 5.1.1. Terminal numbers refer to connections as shown on the actuator circuit diagram
Summary of Contents for Skilmatic SI 3
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