1.1.2 Safety Instructions
•
The frequency converter must be disconnected from the mains if repair work is to be
carried out. Check that the mains supply has been disconnected and the prescribed time
has passed before removing motor and mains plugs.
•
Make sure the frequency converter is properly connected to earth.
•
Protect users against supply voltage.
•
Protect the motor against overloading according to national and local regulations.
•
The earth leakage current exceeds 3.5 mA. For ELCB types, please see application note
MN.90.GX.YY.
•
The [STOP/RESET] key on the control panel of the frequency converter
does not
dis-
connect the equipment from mains and is thus
not to be used as a safety switch
.
•
Note that the frequency converter has more voltage inputs than L1, L2 and L3 when DC
bus terminals are used. Check that all voltage inputs are disconnected and that the pre-
scribed time has passed before repair work is commenced.
1.1.3 Warning against unintended start
1.
The motor can be brought to a stop by means of digital commands, bus commands,
references or a local stop, while the frequency converter is connected to mains. If per-
sonal safety considerations make it necessary to ensure that no unintended start oc-
curs, these stop functions are not sufficient.
2.
While parameters are being changed, the motor may start. Consequently, the stop key
[STOP/RESET] must always be activated, following which data can be modified.
3.
A motor that has been stopped may start if faults occur in the electronics of the frequency
converter, or if a temporary overload or a fault in the supply mains or the motor con-
nection ceases.
1.1.4 Use on Isolated Mains
See section
RFI Switch
in the operating instructions regarding use on isolated mains.
It is important to follow the recommendations regarding installation on IT-mains, since sufficient
protection of the complete installation must be observed. Not taking care using relevant moni-
toring devices for IT-mains may result in damage.
1 Quick Guide
VLT 2800 Quick Guide
1
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
