Siemens SINAMICS - X521 Three-Phase Voltage Sensing up to 100 V 3-Ph. AC

WARNING
Electric shock due to voltage flashovers on the temperature sensor cable
Voltage flashovers in the signal electronics can occur in motors without safe electrical
separation of the temperature sensors.
● Only use temperature sensors that fully comply with the specifications of the safety
isolation.
● If safe electrical separation cannot be guaranteed (e.g. for linear motors or third-party
motors), use a Sensor Module External SME120 or SME125 or the TM120 Terminal
Module.
6.2.4 X521 three-phase voltage sensing up to 100 V 3-ph. AC
Table 6-4 X521: Voltage sensing 100 V
Terminal Designation Technical data
1 2 3
1 Phase voltage U Connection to the voltage sensing for medi‐
um-voltage networks via a safe electrically
isolated transformer
Resistance to neutral point: ∼500 kΩ
Insulation resistance, neutral point - ground
when the jumper is not inserted: >10 MΩ
2 Phase voltage V
3 Phase voltage W
Type: Screw terminal 1
NOTICE
Damage to the VSM10 as a result of an impermissible terminal assignment
The VSM10 has two terminal strips, X521 and X522, to sense the three-phase line supply
voltage. A terminal assignment which is not permissible results in the module being damaged.
● Use just one of the two terminal strips.
● Only connect voltages to terminal strip X521 up to a maximum 100 V (phase-to-phase) via
a transformer.
● Only connect voltages to terminal strip X522 up to a maximum 690 V (phase-to-phase)
directly.
Voltage Sensing Module VSM10
6.2 Interface description
Supplementary component descriptions
Manual, 06/2019 83