SIEMENS
SINAMICS SM150
Medium-Voltage Converter
SINAMICS SM150 in IGBT version
4/6
Siemens D 12 · 2012
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Function
SIMATIC OP 177B operator panel
The SIMATIC OP 177B operator panel is fitted into the cabinet
door of the SINAMICS SM150 to enable operation, monitoring
and commissioning.
It has the following features and characteristics:
•
5.7" STN touch display
•
Context-dependent operations by touch, permanently
available functions can be selected using individual keys
•
Non-volatile message buffer, no battery
English and German are available as operator panel languages.
SINAMICS SM150
in the IGBT version
Description
Detecting the motor actual speed
The SMC30 encoder module can be used to record the actual motor speed. The signals from the rotary
pulse encoder are converted here and made available for evaluation to the closed-loop controller via the
DRIVE-CLiQ interface.
Operator protection
The cabinet doors of the power units are fitted with electromagnetic locks. This prevents the cabinet doors
being opened while hazardous voltages are connected inside the cabinet.
EMERGENCY-OFF button
The converters are equipped as standard with an EMERGENCY-OFF button with protective collar which is
fitted in the cabinet door. The contacts of the button are connected in parallel to the terminal strip so they can
be integrated in a protection concept on the plant side. EMERGENCY-OFF stop category 0 is set as standard
for an uncontrolled shutdown (EN 60204-1/VDE 0113-1 (IEC 60204-1)). The function includes voltage discon-
nection of the converter output through the circuit breaker. The motor coasts in the process.
The control of the "Safe Torque Off" function is optionally available (option
K80
).
Insulation monitoring
The converters feature insulation monitoring of the complete electrical circuit from the secondary side of the
transformer to the stator windings of the motor.
Monitoring of the peripherals
An extensive package of options for I/O monitoring (from the transformer and the motor through to the
auxiliaries) is available.
In addition it is possible to monitor the temperature with thermocouples or Pt100 resistors.
Thermal overload protection
An alarm message is issued first when the overtemperature threshold is reached. If the temperature rises
further, either a shutdown is carried out or automatic influencing of the output current so that a reduction in the
thermal load is achieved. Following elimination of the cause of the fault (e.g. improvement in the ventilation),
the original operating values are automatically resumed.
For instance, for air-cooled converters and when filter mats are used, the amount of pollution of the filter
mats is monitored by measuring the differential pressure which is then signaled. In the case of water-cooled
converters, the water temperature and flow rate are recorded at several points in the cooling circuit and
evaluated. An extensive self-diagnosis protects the converter and reports faults.
Grounding switch (option)
If grounding on the infeed or motor side is required for safety and protection reasons, a motorized grounding
switch can be ordered.
For safety reasons, the converter controller locks these grounding switches against activation while voltage is
still present. The control is integrated into the protection and monitoring chain of the converter. The grounding
switches are inserted automatically when the standard grounding switches of the DC link are inserted.
© Siemens AG 2012