Motor Connection - AUMA SAEx 25.1 Operation Instructions Manual

Protection via thermal mo-
tor protection
CAUTION
Safety standards Safety measures and safety equipment must comply with the respectively valid na-
Connecting cables, cable
glands, reducers, blanking
plugs

6.2 Motor connection

The current value for sizing the protection is derived from the current consumption of
the motor (refer to Motor name plate
We recommend adapting the switchgear sizing to the max. current (I
and setting the overcurrent protection device in compliance with the indications in the
electrical data sheet.
Version with thermoswitch or PTC thermistor as motor protection permissible.
Without motor protection, impermissibly high temperatures at the actu-
ator may occur: Ignition hazard, risk of explosion!
Risk of death, serious injury or motor damage. Our warranty for the motor will lapse if
the motor protection is not connected.
à According to EN 60079-14/VDE 0165, a thermal overcurrent protection device
(e.g. Motor protection switch) must be installed for explosion-proof actuator ver-
sions with thermoswitches, in addition to the thermoswitches.
à For versions with PTC thermistor:s, an additional suitable tripping device must be
integrated into the controls.
tional on site specifications. All externally connected devices shall comply with the rel-
evant safety standards applicable for the place of installation.
• We recommend using connecting cables and connecting terminals according to
nominal current (I ). (Refer to
N
• For device insulation, appropriate (voltage-proof) cables must be used. Specify
cables for the highest occurring rated voltage.
• Use connecting cables, cable glands, reducers, blanking plugs with a minimum
temperature range of +80 °C.
• To avoid contact corrosion, we recommend the use of sealing agents for cable
glands and blanking plugs made of metal.
• For connecting cables exposed to UV radiation (outdoor installation), use UV res-
istant cables.
• For connecting position transmitters, only use screened cables.
Figure 23: Arrangement of connections at actuator
[3]
[1] Motor terminal compartment
[3] Electrical connection for control con-
nections (illustration shows K version)
The terminal compartment is designed in protection type Ex e (increased safety).
[} 9]).
Motor name plate [} 9]
[1]
[2]
[2] Cable entry for motor connection
Electrical connection
) and selecting
max
or electrical data sheet.)
23