Festo Контроллеры двигателя CMMS-ST - Manual (Page 121)

8. Service functions and error messages
Festo.P.BE-CMMS-ST-G2-HW-EN 1008NH 121
8.1.5 I²t monitoring
The CMMS-ST stepping motor controller has I²t monitoring to restrict the average power
loss in the power output stage and in the motor. As the power loss which occurs in the
power electronics and in the motor increases by its square as the current flow increases in
a worst case scenario, the square of the current value is usually assumed for the power
loss.
8.1.6 Power monitoring for the brake chopper
There is a power monitoring system for the internal braking resistor in the operating
software.
8.1.7 Commissioning status
Stepping motor controllers sent to Festo for servicing have other firmware and parameters
loaded for testing purposes.
The CMMS-ST must be configured before it is commissioned again at the customer's
premises. The configuration software queries the commissioning status and prompts the
user to configure the stepping motor controller. At the same time, the device indicates
that it is ready for operation but has not yet been configured by displaying “A” on the
7-segment display.
8.2 Operating mode and error messages
8.2.1 Operating mode and error display
A seven-segment display is supported. The display and the meaning of the symbols shown
are illustrated in the following table:
Display Meaning
The outer segments “rotate” on the display in this operating mode. The display
depends on the current actual position or speed.
The central bar is also active when the controller release is active.
The CMMP-ST stepping motor controller still needs to be parameterised.
(seven-segment display = “A”)
Controlled torque mode.
(seven-segment display = “I”)
P xxx Positioning (“xxx” represents the position number)
The digits are sequentially displayed