SEW MOVIDRIVE MDX60B, User Manual

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Manual – MOVIDRIVE® MDX60B/61B Communication and Fieldbus Unit Profile
7
Process data description
SEW Unit Profile
Positive speed values correspond to a CW rotation with proper connection of the motor,
or to CW = UPWARDS for hoist applications.
Examples
NOTICE
Consistent handling of the two process output data words for positions.
Possible consequences: The servo inverter might move to undefined positions be-
cause, for example, an old position setpoint low and an already new position setpoint
high would be effective at the same time.
When handling position setpoints in the application program of the higher-level
automation controller make sure that the two process output data used for transmitting
the position are handled consistently. This means that the position setpoint high is
always transmitted together with the position setpoint low.
Process data Value Scaling Transmitted process
date
Speed
CW 400 rpm 400/0.2 = 2000
dec
= 07D0
hex
2000
dec
or 07D0
hex
CCW 750 rpm - (750/0.2) = 3750
dec
= F15A
hex
-3750
dec
or F15A
hex
Relative
speed
CW 25 % f
max
25 x (16384/100) = 4096
dec
= 1000
hex
4096
dec
or 1000
hex
CCW 75 % f
max
-75 x (16384/100) = -12288
dec
= D000
hex
-12288
dec
or D000
hex
Current
45 % I
N
(45/0.1) = 450
dec
= 01C2
hex
450
dec
or 01C2
hex
115.5 % I
N
(115.5/0.1) = 1155
dec
= 0483
hex
1155
dec
or 0483
hex
Ramp
300 ms 300 ms
→
300
dec
= 012C
hex
300
dec
or 012C
hex
1.4 s 1.4 s = 1400 ms
→
400
dec
= 0578
hex
1400
dec
or 0578
hex
Position
35 rev. CCW -35 x 4096 = - 143360
dec
= FFFD D000
hex
FFFD D000
hex
high low
19 rev. CW 19 x 4096 = 77824
dec
= 0001 3000
hex
0001 3000
hex
high low