–
Braking resistor (integrated into the cooling element)
–
Brake chopper (switches the braking resistor in the intermediate circuit, as needed)
–
Temperature sensors (for monitoring the temperature of the power module and of the air in the
device)
–
Fan (dependent on the product variant in the cooling profile)
The device has separate connections for logic and load voltage supply. The load voltage supply comes
directly from the low voltage network. The logic supply must be provided through a PELV power sup-
ply unit (+24 V DC).
The servo drive offers the possibility to connect 2 sensors. In addition, the device has 1 switching out-
put for direct connection of the holding brake in the motor and 1 output for control of an external
clamping unit.
An external braking resistor can be connected instead of the internal braking resistor, if necessary.
An Ethernet interface is available for parameterisation through a PC. The type of activations depends
on the product design (e.g. over bus/network, over EtherCAT, EtherNet/IP or PROFINET).
If required, the CDSB display and operating unit can be plugged in on top of the front side of the
device. The CDSB displays, for example, diagnostic information as well as setpoint and actual values
in plain text and permits updating of parameter record and firmware.
For operation of several servo drives in a device compound, the intermediate circuits of several
devices can be coupled and the power supplies and I/O signals of the devices can be linked through
cross-wiring. The intermediate circuit coupling can increase the energy efficiency of the device com-
pound.
Festo recommends use of servo motors, electromechanical drives, lines and accessories from the
Festo accessory programme.
Product overview
13
Festo — CMMT-AS-C2/C4-3A-... — 2018-02
