WIKA CPC3000 - Manual (Page 26)

Pneumatic High-Speed Pressure Controller CPC3000
WIKA Operating Instruction Pneumatic High-Speed Pressure Controller ∙ Version 1.1 26
11498171.01 08/2009 GB
7.3 Setpoint Entry
The control setpoint can be entered using the default numeric keypad or the alternate STEP
or JOG keypads that appear on the right side of the main menu when selected using the
[SETPOINT ENTRY SIDE-MENU] tabs
on the lower right hand side of the
main menu. These alternative methods of entering the setpoint have advantages in different
situations and have been designed to increase ease of use and productivity.
The numeric keypad shown in "Figure - Numeric Keypad" to the left,
is the default keypad that appears every time the unit is turned on or
can be activated using the
[0-9] tab. A setpoint value can be entered
directly using this keypad. As the value of the setpoint is entered the
setpoint field will turn blue and the entered value will appear in the field.
The Setpoint value can be deleted completely using the
[DELETE]
key, the last digit of the entered setpoint can be deleted using
the [CLEAR ENTRY] key or the setpoint value can be accepted
using the [ACCEPT ENTRY] key. When the [ACCEPT ENTRY] key
is pressed the setpoint field will turn white and the new setpoint will
become active. In control mode, the controller output will ramp to the
entered setpoint.
Caution: If the [ACCEPT ENTRY] key is not pressed
the previously entered setpoint will remain active.
The STEP keypads shown in "Figure - STEP
Keypads", provide a way to increment the
setpoint by defined steps. Steps are a percent of
the user defined limits set in the
MAIN -> SETUP
-> CONTROL or actual pressure values that are
displayed in the pressure units selected in the
main menu. A total of 12 steps are provided.
When a step is pressed the related setpoint is
immediately entered as the active setpoint. In
control mode, the controller output will ramp to
this setpoint. The STEP Keypad can be modified
in the
MAIN -> SETUP -> DISPLAY menu
discussed in chapter 7.8.1.
The JOG Keypad shown in "Figure - JOG Keypad", provides a way to
jog the setpoint up or down by small increments. The increments are
determined by the resolution, the maximum control limit and/or the
units of measure. For example, if the resolution is set to display four
decimals then the small triangle pointing up will change the setpoint by
+0.0001 and the small triangle pointing down will change the setpoint
by -0.0001. In the same way, the medium triangles will change the
setpoint by ±0.0010 and the large triangles will change the setpoint by
±0.0100 as shown in the figure. When the Resolution, the maximum
control limit or the units of measure are changed so that three decimals
are displayed, then the JOG functions will change to ±0.001, ±0.010
and ±0.100 respectively. This is useful when adjusting the pointer of a
manometer congruent to the skale.
Figure - Numeric Keypad
Figure - STEP Keypads
Figure - JOG Keypad