Lenze LDECBBF1xxxxxxHx - Manual (Page 11)

Safety instructions
Residual hazards
2
l
11 LDEDS−CCU210B EN 4.0
2.2 Residual hazards
Protection of persons
ƒ The X1 power connector contacts (supply via flat connector field) can conduct
hazardous voltages if the control system is connected to the mains. Therefore
disconnect the control system before carrying out any work on it.
ƒ The X2 power connector contacts also conduct hazardous voltages. Depending on the
risk analysis of the machine/system, you may have to take additional protective
measures.
ƒ If the status LEDs and other display elements go out, this does not indicate that the
control system is disconnected from the mains and is deenergised.
ƒ During operation, the control system has to be closed.
ƒ The current collector may only be touched 3 minutes after disconnection from the
mains. Before carrying out any work on the control system, check whether all power
terminals are deenergised. The control system may not be short−circuited.
ƒ Operation at ambient temperatures > 50 °C:
– The operating temperature of the control system housing is > 60 °C.
– Depending on the risk analysis on the machine/system, you may have to use
additional protective covers.
Motor protection
ƒ The connected motor can overheat if
– motors that do not feature temperature monitoring with PTC thermistor (PTC) or
thermal contact (NC contact) are operated on the control system.
– the temperature monitoring with PTC thermistor (PTC) or thermal contact
(NCcontact) is not connected to the control system
– the temperature monitoring is switched off (C0120 = 0).
– the temperature monitoring is set to "Warning" (C0120 = 2).