User's Manual

Functions
3.6 Motor protection
M200D AS-Interface Basic
Manual, 03/2009, A5E01668085-01
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Prewarning limit for motor heating
The motor starter also assumes a prewarning role, that is, it issues a warning if the motor
temperature limit is exceeded. The prewarning limit for the M200D AS-i Basic is 90 % of the
motor heating value. The motor is shut down at 100 %.
The alarm can be read via Diagnostics via parameter channel (pa
rameter echo) (Page 84)
for the starter.
Settings
Device parameter Default setting Setting range
Motor protection shutdown
response
Shutdown without restart
• Shutdown without restart
• Shutdown with restart
Trip class CLASS 10
• CLASS 10
• CLASS OFF
3.6.2 Temperature sensor
Description
Temperature sensors are used to directly monitor the motor winding temperature. This
indicates whether the motor is overloaded or functioning normally. If temperature sensors
are installed in the motor stator winding (order option for the motor), the M200D motor starter
can use these to monitor the motor.
M200D motor starters can evaluate one temperature sensor circuit.
Temperature sensor
You can activate or deactivate this parameter depending on whether or not a temperature
sensor is installed in the motor. The setting is made by means of the DIP switch on the
device.
Two types of temperature sensor are supported:
● Thermoclick.
This is a switch that opens at a certain winding temperature.
● PTC type A.
This is a PTC thermistor with a characteristic to IEC 60947-8.
When the PTC type A temperature sensor is active, temperature sensor monitoring is also
activated (see below).