Beckhoff EK1960 Series, Operating Instructions Manual

Page: 21 / 145

Product description
EK1960 21 Version: 1.3.1
Product designation EK1960
Climate category according to EN 60721-3-3 3K3
(the deviation from 3K3 is possible only with optimal
environmental conditions and also applies only to the
technical data which are specified differently in this
documentation)
Permissible level of contamination
according to EN 60664-1 level of contamination 2
(comply with the chapter
Cleaning [
}
133] )
Inadmissible operating conditions TwinSAFE controllers must not be used under the
following operating conditions:
• under the influence of ionizing radiation (exceeding the
natural background radiation)
• in corrosive environments
• in an environment that leads to impermissible soiling of
the controller
Vibration / shock resistance conforms to EN 60068-2-6 / EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2 / EN 61000-6-4
Shocks 15 g with pulse duration 11 ms in all three axes
Protection class as per IEC 60529 IP20
Permitted operating environment In the control cabinet or terminal box, with minimum
protection class IP54 according to IEC 60529
Correct installation position
see chapter Installation position and minimum distances
[ } 38]
Technical approvals CE, TÜV SÜD
NOTE
Protective circuit
No protective circuit is integrated in the output circuit of the EK1960, so it is necessary to provide a free-
wheeling diode on the actuator for inductive loads. However, it must be borne in mind that the free-wheeling
diode may prolong the switch-off times of the actuator.
The protective circuit must limit the induced voltage at the output to an amount of less than 29V. Thus, R/C
circuits and varistors are typically unsuitable.