Lenze E82xV113Kxxxxx - Manual (Page 11)

Safety instructions
Residual hazards
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11 EDK82EV113 EN 4.0
1.2 Residual hazards
Protection of persons
ƒ Before working on the drive controller, check whether all power terminals, the relay
output, and the pins of the FIF interface are dead, because
– the power terminals U, V, W, +UG, −UG, BR1 and BR2 still carry dangerous voltage
for at least 3 minutes.
– the power terminals L1, L2, L3; U, V, W, +UG, −UG, BR1 and BR2 carry dangerous
voltage when the motor is stopped.
– the relay outputs K11, K12, K14 can carry dangerous voltage when the drive
controller is disconnected from the mains.
ƒ If you don’t use the fail−safe function selection of direction of rotation" via the
digital signal DCTRL1−CW/CCW, (C0007 = 0 ... 13, C0410/3
¹ 255):
– In case of open circuit or failure of the control voltage, the drive may change the
direction of rotation.
ƒ If you use the function "flying restart circuit" (C0142 = 2, 3) for machines with a low
moment of inertia and low friction:
– After controller enable has been effected in the standstill status, the motor may
temporarily start up, or change direction of rotation.
ƒ The operating temperature of the heatsink on the drive controller is > 80 °C:
– Skin contact with the heatsink causes burns.
Device protection
ƒ All pluggable terminals can only be plugged in or unplugged when the controller is
disconnected from the power supply!
ƒ Frequent mains switching (e.g. inching mode via mains contactor) can overload and
destroy the input current limitation of the controller:
– Therefore at least 3 minutes must pass between two switch−on operations.
Motor protection
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.