Safety instructions
Residual hazards
2
2.3
2.3−1
EDSVF9383V EN 6.0−11/2009
2.3 Residual hazards
ƒ Before working on the controller, check that no voltage is applied to
the power terminals:
– The power terminals U, V, W, +U
G
, −U
G
, BR1, BR2 and 101 ... 104
remain live for at least five minutes after disconnecting from the
mains.
– The power terminals L1, L2, L3, U, V, W, +U
G
, −U
G
, BR1, BR2 and
101 ... 104 remain live when the motor is stopped.
ƒ The leakage current to earth (PE) is >3.5 mA. EN 50178 requires a fixed
installation.
ƒ The heatsink of the controller has an operating temperature of > 80 °C:
– Direct skin contact causes burns.
ƒ During the parameter set transfer, the control terminals of the
controller can 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".
ƒ Frequent mains switching (e.g. inching mode via mains contactor) can
overload and 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).
ƒ Certain drive controller settings can overheat the connected motor:
– E. g. long−time operation of the DC injection brake.
– Long−time operation of self−ventilated motors at low speeds.
ƒ Drives can reach dangerous overspeeds (e. g. setting of high output
frequencies in 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.
Protection of persons
Device protection
Motor protection
Protection of the
machine/system
efesotomasyon.com - Lenze
To Next Page
Loading...
