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IP 266 Machine Data, Modes and Traversing Programs
5.1.5 Acceleration Rates
In order to reach the speed initialized for the specified mode, the drive must
accelerate.
The following five values may be entered in the machine data:
Maximum deceleration rate
Forward acceleration rate
Forward deceleration rate
Reverse acceleration rate
Reverse deceleration rate
The absolute maximum deceleration rate must be greater than or equal to all
other acceleration or deceleration rates.
This deceleration rate is used to stop travel
when the drive has reached a hardware limit switch or
when an external Stop command was issued.
The values must be in the range from 10 to 9 999. The entry must be in [mm/s
2
],
[deg/s
2
] or [0.1 inch/s
2
].
Example 1:
This example illustrates the use of the various acceleration and deceleration rates
in normal operation.
Figure 5-4. Acceleration and Deceleration of the Drive System
in Both Directions
Forward acceleration
Constant speed forward
Reverse deceleration
v
rev
[
mm
/
min
]
v
for
Reverse acceleration
Constant speed in reverse
Reverse deceleration
t
EWA 4NEB 812 6057-02
5-11
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