9.581.140-6
Page:
32
5.2 Connection of VVVF controller
5.2.1 Power connections
5.2.1.1 Protective conductor
•
Generally, the VVVF controller must be grounded. Grounding must be effected using a protection
conductor of a size of
at least
10 mm
2
(copper cable) (DIN EN 50178), even if the mains cable
has a lower size.
•
The PE connection of the VVVF controller must be connected with the main ground conductor of
the control cabinet.
•
The ground conductor shall be connected in
star form
. Connect the PE contacts of all
components (braking resistor, reactor, motor, etc.) to the star point (main earthing point). This
point should be as
close as possible to the VVVF
controller
cross section main
cable
min. cross section PE-wire
< 10 mm
2
10 mm
2
> 10 mm
2
cross section of the main cable
5.2.1.2 Connection to power supply
Select an appropriate
mains cable cross-section
(refer to VDE 0100 Part 523).
5.2.1.3 Fans
At devices bigger than FRC-F5 the power supply for the fan must be provided externally by the plant
operator. The fan requires a supply voltage of 230V~/50Hz (60Hz). The fan power supply line must be
fuse-protected (max. 6A).
The fan is connected to the terminals named
L, N
or
A1, A2
on the terminal block. Connection to PE is
not mandatory, but should be done as the 2.5 mm² PE terminal if at all.
5.2.1.4 Motor phases
Select an appropriate
mains cross-section
(refer to VDE 0100 Part 523).
Connect the
motor phases U, V, W
using a
shielded cable
. Make sure the shield is connected to PE
firmly (use a metal clamp) and as close as possible to the VVVF controller .
5.2.1.5 Braking resistor
Connect the
braking resistor
(terminals
+
and
RB
) using a
shielded cable
. Make sure the shield is
connected to PE firmly (use a metal clamp) and as close as possible to the VVVF controller.
If the brake resistor is provided with a temperature monitor, connect it to terminals 20 (+24V) and 25
(DigIn2).
Activation of temperature monitor of brake resistor:
Press buttons "E" and "C" simultaneously for 3 seconds to activate Service menu
In menu "Extended“
"Service"
"Error release", set parameter "BRWProtect" to 1
Digital input 2 (DigIn2) at terminal 25 is now assigned this function permanently.
If the temperature sensor of the brake resistor is not connected or if it trips when it has detected that
the temperature is too high, the error message "BRW Overtemp." will be displayed.
This error cannot be acknowledged and will result in a shut-down of the brake resistor.
Summary of Contents for FRC-F Series
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