Festo Контроллер двигателя CMMD-AS - Manual (Page 33)

3. Product description
Festo P.BE-CMMD-AS-HW-EN 1002NH 33
I/O Timing Diagram
ENABLE
START
STOP
Drive is moving
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
DOUT0: READY
DOUT1: MC
DOUT3: ERROR
DOUT2:
Position synchronous
t1 t1 tx tx t
mc
0
1
DOUT2:
Setpoint reached
t1 = 1.6 ms
tx = x ms (dependent on ramps)
t
mc
= x ms (dependent on MC window (drive stopped))
Fig. 3.1 Signal curve during "catch up" of a leading master (MC) and during
desynchronising
The signal MC is set as long as the drive is at a standstill during active synchronisation
(DIN8: START set). That is, the MC signal is set as long as the window for "DZ = 0" has not
been left.
The signal "Position synchronous" during activation of synchronisation (DIN8: START on
high) is not set until the "Target Reached" window has been left. But since
synchronisation is switched onto a "running" master and the drive first has to be
accelerated, the "Position synchronous" message first goes off until the position
difference has been closed.
Note
The acknowledgment of Dout2 is firmly preset to
"Position synchronous".