Residual Hazards - Lenze 9300 vector Instructions De Montage

2 Safety instructions

Residual hazards

2.3 Residual hazards
Protection of persons
Before working on the controller, check that no voltage is applied to the power
ƒ
terminals:
– The power terminals U, V, W, +U
least five minutes after disconnecting from the mains.
– The power terminals L1, L2, L3, U, V, W, +U
live when the motor is stopped.
The leakage current to earth (PE) is >3.5 mA. EN 61800−5−1 requires a fixed
ƒ
installation.
The heatsink of the controller has an operating temperature of > 80 °C:
ƒ
– Direct skin contact causes burns.
During the parameter set transfer, the control terminals of the controller can
ƒ
assume undefined states.
– For this reason, the connectors X5 and X6 have to be unplugged before the
transfer is executed. This ensures that the controller is inhibited and all control
terminals are in the defined state LOW".
Device protection
Frequent mains switching (e.g. inching mode via mains contactor) can overload and
ƒ
destroy the input current limitation of the controller.
– Thus, at least five minutes have to pass between two switch−on processes.
– In case of frequent, safety−related disconnections use the "safe torque off" safety
function (STO).
Motor protection
Certain drive controller settings can overheat the connected motor:
ƒ
– E. g. long−time operation of the DC injection brake.
– Long−time operation of self−ventilated motors at low speeds.
Protection of the machine/system
Drives can reach dangerous overspeeds (e. g. setting of high output frequencies in
ƒ
connection with motors and machines not suitable for this purpose):
– The drive controllers do not provide protection against such operating conditions.
For this purpose, use additional components.
70
, −U , BR1, BR2 and 101 ... 104 remain live for at
G G
, −U , BR1, BR2 and 101 ... 104 remain
G G
l
EDKVF9383 DE/EN/FR 4.0