Agromatic ESR-NK Series, Инструкция по установке и эксплуатации, Страница: 61 / 98

6 Electronic position controller ESR-NK (option) 6.2 Electrical connection
Actuators NK and VK, Position Controller ESR-NK 55
Before
–
switching the actuator on or off ,
–
changing any settings (e.g. rotational direction or swivel range) at the
actuator,
check whether these actions could cause any dangerous movements
within the machine/system or malfunctions of other assemblies!
−
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 (see Fig. 5.10).
−
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. setpoint, actual value)
with a minimum cross-section of 0.5mm² and a maximum length of
1000m. One end of the shielding must be connected to the chassis
ground of the actuator (grounding terminal).
−
A minimum distance of 3mm must be maintained between the power line
and the setpoint/actual value line. As an alternative, both lines can be fit-
ted with insulation that matches the mains voltage.
−
The setpoint line and the actual value cable for the actuator must not be
routed in parallel with cables supplying 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)” and/or “5.3.2 Determining the direction of action (series
VK)” before putting the actuator into operation.
−
Protection class IP65 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: