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User Instructions
MAN-02-04-60-0352-EN Rev. 3
February 2019
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Section 3: General Information
General Information
Figure 5
Label 1 - Type Label
1
3.3
Operating Mode
RTS Fail-Safe Linear FL actuators are suitable for open-loop control (S2 operating mode -
on/off duty) and closed-loop control (S9 operating mode - modulating duty) according to
EN 60034-1.
3.4
Protection Class
RTS Fail-Safe Linear FL actuators
come by default with IP 68 (EN 50629) protection.
CAUTION: PROTECTION CLASS AND CABLE GLANDS
The protection class specified on the type label is only effective when cable glands also
provide the required protection class, the cover of the connection compartment is carefully
secured and the mounting position (see Section 3.5) is observed.
We recommend metallic threaded cable glands with a metrical thread. Unused cable inlets
must be closed with stopping plugs. On explosion-proof actuators, cable glands with
protection class
EEx e according EN60079-7
must be used. After removing covers for
assembly purposes or adjustment work, take special care upon reassembly so that seals are
not damaged and remain properly fastened. Improper assembly may lead to water ingress
and to failures of the actuator.
NOTE:
The cover of the control unit - the Operating unit - (see Figure 1) must not be opened.
Allow a certain sag in the connector cables before reaching the screwed cable glands so that
water can drip off from the connector cables without running to the screwed cable glands.
As a result, forces acting on the screwed cable glands are also reduced. (see Section 3.5)