Lenze ECSCAxxx - Manual (Page 36)

Safety instructions
Residual hazards
2
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36 EDBCSXA064 EN 3.2
2.3 Residual hazards
Protection of persons
ƒ Before working on the axis module, check that no voltage is applied to the power
terminals, because
– the power terminals +UG, −UG, U, V and W remain live for at least 3 minutes after
mains switch−off.
– the power terminals +UG, −UG, U, V and W remain live when the motor is stopped.
ƒ The heatsink has an operating temperature of > 70 °C:
– Direct skin contact with the heatsink results in burns.
ƒ The discharge current to PE is > 3.5 mA AC or. > 10 mA DC.
– EN 61800−5−1 requires a fixed installation.
– The PE connection must comply with EN 61800−5−1.
– Comply with the further requirements of EN 61800−5−1 for high discharge
currents!
Device protection
ƒ All pluggable connection terminals must only be connected or disconnected when
no voltage is applied!
ƒ The power terminals +UG, −UG, U, V, W and PE are not protected against polarity
reversal.
– When wiring, observe the polarity of the power terminals!
ƒ Power must not be converted until all devices of the power system are ready for
operation. Otherwise, the input current limitation may be destroyed.
Frequent mains switching (e.g. inching mode via mains contactor) can overload and
destroy the input current limitation of the axis module, if
ƒ the axis module is supplied via the ECSxE supply module and the input current
limitation is activated depending on the DC−bus voltage (C0175 = 1 or 2).
ƒ the axis module is not supplied via a supply module delivered by Lenze.
ƒ the low−voltage supply (24 V) is switched off.
For this reason allow a break of at least three minutes between two starting operations!
Use the safety function ˜Safe torque off˜ (STO) for frequent disconnections for safety
reasons.