Agromatic ESR-NK Series, Installation And Operating Manual, Page: 41 / 98

5 Assembly 5.3 Electrical connection
Actuators NK and VK, Position Controller ESR-NK 35
−
Check whether the type of current, mains voltage and mains frequency
match the motor specifications. Refer to the nameplates on the hood and
within the actuator.
−
The power cord must be sized to suit the maximum power consumption of
the actuator.
−
Equip the actuator with an electric fuse protection suitable for the power
cord used.
−
Attach connection lines that match the screwed cable glands.
−
Observe the minimum cable bend radius prescribed by the manufacturer.
−
Always observe the schematic diagram attached inside the hood.
−
Use separate shielded wires for low voltages (e.g. potentiometer).
−
The control line for the actuator must not be routed in parallel with cables
supplying the large loads. High amperages may generate electro-
magnetic fields which induce voltages into the control lines, thus causing
actuator malfunctions.
−
All internal electrical components (e.g. switches, potentiometers, relays,
etc.) are factory-wired and routed to terminal strips where required.
−
Follow the instructions in section “5.3.1 Determining the direction of rota-
tion (series NK)” for connecting the actuator.
−
Adjust the position limit switches (see section “5.4 Setting the position
switches”
) before putting the actuator into operation.
−
Protection class IP65 or IP66 (option) is guaranteed only if screwed cable
glands are used which are approved for this protection class (see section
“2.3.3 Protection classes of the actuator and the stroke unit” ).
−
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 are controlled by a common switching contact, every
actuator must be equipped with an internal relay for parallel operation (see
section
“5.3.6 AC schematic diagram for parallel operation” ).