Agromatic NEx Series, Assembly And Operating Manual, Page: 49 / 112

5 Assembly 5.3 Electrical connection
Actuators NEx, NEx-K, NEx-KA, NEx-V 43
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Protection class IP66/67 is guaranteed only if screwed cable glands are
used which are approved for this protection class (see section
“2.4.4 Protection classes IP66/IP67” ).
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Use a ring cable lug to connect the ground conductor to the
screw provided for this purpose and identified by the following
symbol:
Important information!
If several actuators with a synchronous motor are controlled by a common
switching contact, every actuator must be equipped with an internal relay
for parallel operation (see section
“5.3.8 AC schematic diagram for parallel
operation” ).
5.3.1 Determining the direction of rotation
DANGER
Hazard of severe injuries due to fire/explosions
The hood of the actuator must be open when carrying out work.
–
Only qualified personnel should carry out work at the actuator in ac-
cordance with explosion protection regulations.
–
Prior to opening the hood, make sure the actuator is not located in or
near to a potentially explosive atmosphere.
Initial connection of the actuator:
–
Observe sections “5.3.2 Control using a BLDC motor” or “5.3.3 Control
using a synchronous motor” .
–
Make sure that the connected valve is approx. in the center of its regu-
lating range.
–
Check the direction of rotation.