X20 system modules • Motor controllers • X20MM2436
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X20 system User's Manual 3.10
Hardware configuration for multiple motor modules
If three or more motor modules are operated in a cluster, a dummy module must be inserted between the motor
modules. There is no derating in this configuration.
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4.25.2.11 Monitoring the module supply
The module supply is continually monitored (with firmware Version 3 or higher). If the following limits are exceeded
in either direction, an error bit is set.
Upper limit:
>50 V
Lower limit:
<18 V
4.25.2.12 Overvoltage cutoff
If the supply voltage on the module exceeds 50V (e.g. through feedback during generator operation), then both
PWM outputs are disabled (PWM output pins are shorted). The outputs are reactivated as soon as the supply
voltage is back in the valid range. Switching the outputs on again can cause an open load error in current mode
(depending on the current setpoint and load inductance) as well as with any other abrupt change to the current
setpoint value.
4.25.2.13 Overtemperature cutoff (at 85°C)
If the module temperature reaches or exceeds the limit value of 85°C, then the module executes the following
actions:
•
Setting the "overtemperature" error bit
•
The PWM outputs are disabled (short-circuited)
Once the module temperature sinks to 83°C, the error bit is automatically cleared by the module and the outputs
become operational again.
Summary of Contents for X20 System
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