Selected Functions
5-10
5.4 Ramping Function
The
T
urboPlastic module provides a ramping function for both velocity and
pressure control functions during open loop operation of all profiles. The
ramping function is activated by setting appropriate bits in Constant 10 in
the download table of each profile.
In normal open loop operation, the setpoints are output as step changes for
both pressure and velocity
. W
ith the ramping function activated instead of
the step function output, the output varies on a slope or ramp that increases
or decreases proportionally from the starting position to the position in the
next step in the profile table. Figure 5-3 shows the open loop output without
ramping and Figure 5-4 shows the open loop output with ramping.
5.4.1
Clamp
Close Profile T
able
Position Velocity Pressure
Current 6
in
Step 1
5 in
3 ips
1200 psi
Step 2
4 in
8 ips
1800 psi
Step 3
3 in
2 ips
1200 psi
Step 4
2 in
6 ips
1500 psi
Step 5
1 in
6 ips
1500 psi
Step 6
0 in
1 ips
600 psi
V
elocity Ramp
Example
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