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166 Optional I/O extension modules
CMOD-02 multifunction extension module
(external 24 V AC/DC and isolated PTC interface)
Safety instructions
WARNING! Obey the safety instructions for the drive. If you ignore the safety
instructions, injury or death can occur.
Hardware description
Product overview
The CMOD-02 multifunction extension module (external 24 V AC/DC and isolated PTC
interface) has a motor thermistor connection for supervising the motor temperature and
one relay output, which indicates the thermistor status. To trip the drive, the user must
connect this overtemperature indication back to the drive, for example, to its Safe torque
off input.
In addition, the extension module has an external power supply interface, which can be
used to power up the drive control unit in case the drive power supply fails. If you do not
need the back-up power supply, you do not have to connect it because the module is
powered from the drive control unit by default.
There is reinforced insulation between the motor thermistor connection, the relay output
and the drive control unit interface. Thus, you can connect a motor thermistor to the drive
through the extension module.
WARNING! Do not connect the +24 V AC cable to the control unit ground when
the control unit is powered using an external 24 V AC supply.
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