3-2
Electrical installation
REFUdrive 500 RD51
DOK-RD500*-RD51*******-IB01-EN-P
All variable-speed motors should be connected using screened cables,
whereby the screen is connected at both ends to the housings through the
largest possible surface area to minimize the inductance. The motor ca-
bles should also be screened outside the cabinet, or at least screened
using barriers. Suitable motor cables, e.g. Siemens PROTOFLEX-EMV-
CY (4x1.5 mm
2
... 4x120 mm
2
) with copper screen.
Steel-screened cables are not suitable.
To connect the screen at the motor, a suitable PG gland with screen con-
nection can be used (e.g. „SKINDICHT SHV/SRE/E“ from the Lapp Com-
pany, Stuttgart). It should be ensured that the connection between the
motor terminal box and the motor housing has a low impedance. Other-
wise, use an additional grounding strap between them.
Never use plastic motor terminal boxes!
The screen between the motor and AC drive converter may not be inter-
rupted by installing components such as output reactors, sinusoidal filters,
motor filters, fuses, contactors. The components must be mounted on
mounting panels which also simultaneously serve as screen connection
for the incoming and outgoing motor cables. If required, metal barriers
may be required to screen the components.
3.2
Warning notes and informations
DANGER
High electrical voltage! Danger to life, severe
electrical shock and severe bodily injury!
⇒
REFUdrive 500 drive converters are operated at high
voltages. Work on the equipment may only be car-
ried-out when the equipment is in a no-voltage con-
dition!
⇒
Only qualified personnel may carry out work on the
equipment!
⇒
Death, severe bodily injury and significant material
damage could result if this warning information is not
observed.
⇒
The drive converter can still be at hazardous voltage
levels up to 5 minutes after the equipment has been
disconnected, due to the DC link capacitors. Thus,
work may only start on the drive converters or the
DC link terminals after an appropriate delay time has
expired.
⇒
Even when the motor is at a standstill, the power-
and control terminals could still be under volt-age.
⇒
If the DC link voltage is centrally supplied, it should
be ensured that the inverter is safely isolated from
the DC link voltage!
⇒
When working on a unit which has been opened, it
should be observed that live components are ex-
posed.
⇒
The user is responsible in ensuring that all of the
drive converters are mounted and connected ac-
cording to the recognized technical regulations in the
country of installation as well as any other regionally
valid regulations. Cable dimensions, fus-
ing/protection, grounding, shutdown, isolation and
overcurrent protection must be especially taken into
account.
Rule 9
Rule 10
LSA Control S.L. www.lsa-control.com [email protected] (+34) 960 62 43 01