User's Manual

Functions
3.6 Motor protection
M200D AS-Interface Basic
26 Manual, 03/2009, A5E01668085-01
Trip class
The trip class (CLASS) specifies the maximum time within which a protective device must
trip from a cold state at 7.2 x the setting current (motor protection to IEC 60947). The M200D
AS-i Basic trip class is set permanently to CLASS 10 and can be deactivated.
If the setting is changed to CLASS OFF, the "thermal motor model" function is deactivated
along with the accompanying messages. With the M200D AS-i Basic, the thermal motor
model is deactivated by means of the rotary coding switch for setting the operating current
(CLASS OFF position).
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Note
Deactivation rule
To ensure motor protection, the motor cannot be switched on when the temperature sensor
is deactivated and, at the same time, CLASS OFF is set. This is indicated on the M200D AS-
i Basic with either an alarm (if an ON command is not present) or a fault (if an ON command
is present).
Recovery time
The recovery time is the time defined for cooling after which the system can be reset
following an overload trip. The recovery time for the M200D AS-i Basic is set permanently to
90 s.
Trip reset signals present during the recovery time have no effect.
Voltage losses occurring before this time expires can prolong the recovery time.