Festo Контроллер двигателя CMMD-AS - Manual (Page 62)

3. Product description
62 Festo P.BE-CMMD-AS-HW-EN 1002NH
Controller
release
START
Intermedicate circuit
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Holding brake
current-
carrying
1
0
DOUT0: READY
DOUT1: MC
DOUT2: ACK
DOUT3: ERROR
Output stage
release
1 Output stage
switched on
0
Drive is moving
1
0
t1 t1 tx t1
t1 = 1.6 ms
tx = x ms (ZK discharges)
Fig. 3.9 Behaviour during interruption of the intermediate circuit supply (error: end stage
off immediately)
Note
The holding brake of the EMMS-AS-…- is not suitable for braking
the motor.
3.7.10 Oscilloscope function
The oscilloscope function implemented in the firmware of the controller is an important
aid to help the commissioning party to optimise the controller settings without using
a separate measuring device. The function allows important signal sequences to be
recorded over time. It consists of three blocks:
- The initialisation section which runs at low priority and performs pre-
calculations for the actual measurement process.
- The data transfer section also has low priority. It is integrated into the time slice
of the serial communication.
- The measuring section runs at a high priority in the rule interrupt and records
the measuring channels. If the trigger condition occurs, the measurement
process is cancelled after a defined number of scan steps.