Wiring the standard device
Important notes
Device protection
5
5.1
5.1.2
5.1-3
EDSVF9333V EN 3.0-06/2005
5.1.2 Device protection
ƒ In case of condensation, connect the controller to the mains voltage
only after the visible humidity has evaporated.
ƒ Controller is protected by means of external fuses.
ƒ Drive controllers EVF9324, EVF9326 and EVF9328 ... EVF9333 must only
be operated with assigned mains choke / mains filter.
ƒ Length of the screws for fastening the shield sheet for the control
cables: 12 mm.
ƒ Cyclic switching of the supply voltage may overload and destroy the
input current limitation of the drive controller. In case of cyclic
switching over a longer period of time, three minutes have to pass
between two starting operations!
ƒ Switching on the motor side of the controller is only permissible for
safety shutdown (emergency-off).
ƒ Unused control inputs and outputs must be equipped with terminal
strips. Unused Sub-D sockets must be provided with the protection
covers included in the scope of supply.
5.1.3 Maximum motor cable length
ƒ The motor cable must be as short as possible for having a positive
effect on the drive behaviour.
ƒ For group drives (several motors connected to one drive controller) the
resulting cable length l
res
is the crucial factor:
I
res
[m] = (l
1
+ l
2
+ l
3
... + l
i
) ⋅ i
l
x
Length of the individual motor cable
l
res
Resulting length of the motor cable
i Nu mber of the individual motor cables
ƒ At rated mains voltage and a switching frequency of 8 kHz and without
additional output filters, the maximum permissible length of the
motor cable is as follows:
– 50 m shielded
– 100 m unshielded
Note!
For compliance with EMC regulations, the permissible cable
lengths must be c hanged.
To Next Page
Loading...
Need help?
General
