rotork CK Series Use And Installation Manual

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7 Cable Connections 8 Operating Your Actuator
7.1 Terminal block layout contd.
A switch or circuit breaker must be included in the wiring
installation to the actuator. The switch or crcuit 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.
WARNING: The actuator must be protected with
overcurrent protection devices, see relevant Motor
Performance data sheet.
CAUTION: 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.
IP68 sealing protection can only be achieved by ensuring that
the correct cable glands are fitted and any remaining entries
are correctly sealed up.
7.2 Earth/Ground Connections
WARNING: Risk of Electric Shock - Do not operate
the actuator with the Protective Earth (PE) conductor
disconnected
The actuator is supplied with two earthing points. A 6 mm
diameter hole is tapped adjacent to the conduit entries on the
main casting for attachment of an external protective earthing
strap. An internal 6 mm earth connection is also provided
however it must not be used alone as the protective earth
connection.
7.3 Removing the plug and socket
Using a 5 mm Allen (Hex) key, loosen the four captive screws
evenly and remove the cover. Do not attempt to lever off the
cover as you may damage the o-ring seal.
7.4 Cable entry
The cable entries into the plug and socket are M20 x 1.5p,
M25 x 1.5p and M32 x 1.5p. Remove the plastic transit plugs
and make cable entries appropriate to the cable type and size.
Ensure that threaded adaptors, cable glands or conduit are
tight and fully waterproof. Seal unused cable entries with steel
or brass threaded plugs.
Ensure that the cables are of the appropriate rating for
the required duty and are fastened to the correct terminal.
Connection details can be found on the wiring diagram.
Cable Size: Power Terminals 1,2 and 3: Max 6 mm²
PE connection: Max 6 mm²
Control contacts: (4 - 50) Max 2.5 mm²
8.1 Operating by Hand
CAUTION: Under no circumstances should any
additional lever device such as a wheel-key or wrench be
applied to the handwheel in order to develop more force
when closing or opening the valve as this may cause
damage to the valve and/or actuator or may cause the
valve to become stuck in the seated/backseated position.
Keep clear of the handwheel when engaging hand operation.
Actuators driving valves via extension shafts may be subject
to retained shaft torsion which can cause the handwheel to
rotate when hand operation is engaged.
To engage handwheel drive depress the Hand/Auto lever
into “Hand” position and turn the handwheel to engage
the clutch. The lever can now be released, it will return to its
original position. The handwheel will remain engaged until
the actuator is operated electrically when it will automatically
disengage and return to motor drive.
For local lockout purposes the Hand/Auto lever can be locked
in either position using a padlock with a 6.5 mm hasp.
Locking the lever in the "hand" position prevents electrical
movement.
8.2 Operating Electrically
CAUTION: Electrical operation is only permitted
once the actuator is fully commissioned to the valve.
Operating electrically before commissioning could result
in damage to the actuator and/or valve.
Electrical motor operation has priority over hand operation.
The motor drive will automatically re-engage after hand
operation has occurred unless the hand/auto lever is held in
theengagedposition.
Electrical operation is possible with external controls or using
the local controls included with the Atronik or Centronik
control module (if fitted).
Keeping the World Flowing
15

rotork CK Series Specifications

General

Brand	rotork
Model	CK Series
Category	Controller
Language	English