Lenze ELCAMWIxxx4SNNPSNN (LCU 121) - Handbuch (Seite 46)

Safety instructions
Residual hazards
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46 EDKLCMW3024−SPS DE/EN 7.0
1.2 Residual hazards
Protection of persons
ƒ The X2x power connector contacts can conduct hazardous voltages if the motor
starter is connected to the mains. Therefore, disconnect the motor starter before
carrying out any work on it.
ƒ The X2x power connector contacts also conduct hazardous voltages when the motor
starter is disabled. Depending on the risk analysis of the machine/system, you may
have to take additional protective measures.
ƒ Operation at ambient temperatures > 40°C:
– The operating temperature of the motor starter housing is > 60°C.
– Depending upon the risk analysis of the machine/system, you may have to use
additional protective covers.
Motor protection
ƒ The connected motor can overheat if
– Motors are operated on the motor starter that do not feature temperature
monitoring with PTC thermistor (PTC) or thermal contact (NC contact)
– Temperature monitoring with PTC thermistor (PTC) or thermal contact (NC
contact) is not connected to the motor starter
– Temperature monitoring is not activated (C0119)
– The set rated motor current for I
2 t monitoring is not adjusted to the motor (C0120)
– I 2 t monitoring is switched off (C0121)