Siemens SINAMICS S220

WARNING
Overheating when the total length of the power cables is exceeded
When the total permissible length of the power cables is exceeded, this can result in
components overheating. Further, the motor insulation can be damaged as a result of the
system vibration. This can cause 󹪝re and smoke, which can lead to death or severe injury.
• Ensure that the total length of all power cables (motor supply cable, DC link cable) does not
exceed the speci󹪝ed permissible length.
NOTICE
Failure of components as a result of unshielded or incorrectly routed cables to
temperature sensors
With unshielded or incorrectly routed cables, it can be expected that interference will be
coupled into the signal processing electronics from the power side. This can signi󹪝cantly
disturb the motor sensor temperature signal, and can result in the failure of individual
components (destruction of the devices).
• Only use shielded cables as temperature sensor cables.
• Only use temperature sensor cables that are routed together with the motor cable and
twisted in pairs and shielded separately.
• Connect the cable shield at both ends to ground potential through a large surface area.
• Only use third-party cables that have cores with insulation properties that comply with safe
electrical separation or separately route the cores to fully comply with safe electrical
separation.
NOTICE
Damage to the motor or holding brake when using an incorrect power supply
With an incorrect power supply, the holding brake can malfunction, i.e. the holding brake does
not reliably open. If the motor constantly operates against the closed holding brake, the
holding brake and/or the motor will be damaged.
• Always use a stabilized DC power supply to operate motors with a built-in holding brake. The
power supply is realized via the internal 24V busbars.
• Observe the holding brake voltage tolerances (24V±10%) and the connecting cable
voltage losses. The holding brake can close if the voltage is too high.
• Set the DC power supply to 26 V. This ensures that the supply voltage for the holding brake
remains within the permissible range when the following constraints are ful󹪝lled:
– Siemens three-phase motors are used
– Using Siemens MOTION-CONNECT power cables
– Note that there are holding brakes that close again when the maximum voltage is
exceeded.
Motor Modules
8.2Safety instructions
Booksize power units
Equipment Manual, 09/2023, A5E53307519B AA 151