30 1/3/02
3 lnstallation and Setup
3.9 Digital Input: Standard Functions
3.9.1 Softstart (Terminal 34)
Softstart input has two purposes:
• To stop the regulator when the machine is not running (hold mode).
• To give the machine a soft startup.
When machine is running and this input signal is activated, the output level will be
stored. This level will then be used for
[Hold Level]
and for the next startup.
In HOLD MODE, output is at a constant
[Hold Level]
.
To compensate for roll inertia at next startup, the output must be reduced with a
percentage of the stored level (typically 15 to 25%).
Running Example:
Machine is stopping
When this input is activated by 24 VDC, the
controller switches to STOP MODE.
In STOP MODE the controller is still regulating
until the time [Softs Time] has run out.
Machine has ramped to stop
When time has run out, controller changes to
HOLD MODE.
In HOLD MODE, controller is not regulating
and the desired output is set to a constant
level =
[Hold Level]
.
(
[Hold Level]
= Stored level +%).
Machine is starting
When input is deactivated by re24
VDC, output will change to softstart level
(
[Softs Lev.]
) and the regulator will
begin to regulate from that level.
(
[Softs Lev.]
= Stored
level
-
%).
Diagnostic
Password
Setup Menu
Mode Menu
Run Mode
Amplifier
0/4mA
Language
Gain
Ratio
P Level
D Level
Softs Menu
Start Out
Softs Lev.
Softs Time
Hold Level
Anti Menu
Anti.Src.
Anti Max
Anti Min
Anti Slope
Splce Menu
Splice Src
Splice Del
Splice Lev
Splice Tim
WebBr Menu
Webbr Lev.
Webbr Time
Range Exp.
RE Source
Ranges
Start No.
Dn Level
Up Level
Range Time
Brake Menu
Range Dia Menu
Dia. Menu
Diamet.Src
P/Rev Roll
mm/Pulse
Min Diam.
Max Diam.
Fac. Diam
DF AutoSet
New Roll D
Diameter
Output2 Menu
Out2 Src
Out2 Slope
Out2 Scale
Out2 Off
