The cabling specifications depend on the type of communication interface to
be used.
The QT-series control box has five threaded M20 holes for cable glands.
When ordering, it is important to consider cable type and size factors, as the
cable glands have a limited cable entry range. For example, Eltorque
standard cable glands can accommodate cables between 8-14 mm/0.32 –
0.55 in.
To maintain the Eltorque actuator’s IP encapsulation, it is important to use
the correct rated cable glands.
The actuators have an EMC class A approval according to DNVGL– CG-0339
without EMC glands. They are, therefore, by default delivered with non-EMC
glands. If you require EMC glands, please notify your sales contact when
ordering.
The default glands for the different communication interface boxes and
ordering information are given in Chapter 8.
If your actuator cannot be installed immediately, it must be stored in a dry
place until you are ready to install and connect cables. The actuator does not
come prepared for long time outdoors storage when arriving from Eltorque.
If the actuator can be mechanically installed but not cabled, please ensure
that all glands and gland holes are thoroughly tightened to avoid moisture
ingress. The actuator’s IP rating is not valid until correctly installed.
Eltorque cannot accept responsibility for deterioration caused on-site if the
actuator has been opened in ways not described in this manual. In principle,
the product should be powered within three years after production to
prevent components from deteriorating. All actuators are thoroughly tested
before shipping to give trouble-free operation if installed and commissioned
properly.
It is important to consider the number of actuators in both the power loop
and the signal loop when using CAN bus. Therefore, the loop list should be
finalized and approved before the installation of the cable is started.
In case of power loss, none of the actuators in that power loop can be
remotely operated. Manual operation is, however, possible in both scenarios.
With the Dual CAN, Dual Power, and the Failsafe options, system security in
case of a power or signal loss is significantly enhanced. More details are
found in Chapter 8 Dual CAN Option, Chapter 10 Dual Power Option ,and
Chapter 11 Failsafe Option.