Siemens SINAMICS G220 - Page 199

Requirement
CAUTION
Damage through contact with voltage sources
The OM-SMT can be damaged if terminal strip X230 of the OM-SMT comes into contact with a
voltage source.
• When unpacking, packing and installing the OM-SMT, carefully ensure that terminal strip
X230 does not come into contact with a voltage source.
WARNING
Electric shock when control cables and PTC input come into contact
If you do not use the input for the overtemperature alarm and instead connect a 100-Ω resistor
to terminals X230:1 and X230:2, a hazardous voltage will occur at the control inputs of the
converter when the resistor comes into contact with damaged control cables. Hazardous
voltages can damage the converter, and when touched, can cause injury or death due to
electric shock.
• Insulate the 100 Ω resistor including its connecting cables according to IEC 61800-5-1, e.g.
using a shrink-on sleeve 2-1193833-8 from the TE Connectivity company.
• Installation work should only be carried out by quali󹪝ed and authorized personnel.
The PTC connection for the Safety Integrated Function Safe Motor Temperature (SMT)must
be protected against mechanical manipulation, e.g. by being installed in a lockable control
cabinet.
The PTC input connections must be safely electrically separated with respect to the SELV
circuits.
Description
Depending on the application, one or two PTC temperature sensors are connected via a terminal.
• PTC 1 for overtemperature alarm
PTC1 is not relevant for Safety Integrated.
• PTC 2 for overtemperature shutdown of the motor
The Safe Motor Temperature (SMT) Safety Integrated Function evaluates PTC2.
Table 7-31 PTC X230 interface
X230 Terminal Designation Explanation
1
2
3
4
1 T4 Input for the overtemperature alarm +
2 T3 Input for the overtemperature alarm -
3 T2 Input for the overtemperature trip +
4 T1 Input for the overtemperature trip -
If a temperature sensor is not connected at terminals X230:1 and X230:2, then the converter
signals the "Overtemperature" alarm.
Connecting
7.2Interfaces for the controller
SINAMICS G220 converter
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB 197