MKS 651C, Instruction Manual, Page: 42 / 172

Front Panel Chapter Three: Overview
28
Front Panel Display
The front panel display shows pressure and valve position by default. The down scrolling key,
[
] selects the previous display in the display list. The up scrolling key, [ ] scrolls to the
next display in the display sequence.
Summary of Front Panel Components
Front Panel Component Function
Key Lock switch Switches between Local (front panel), and Remote (rear
panel), control. The switch must be set to Remote to
remove the key.
Display window Displays pressure and the valve position by default. Other
displays include information such as set points, trip limits,
battery voltage, and softstart rate (depending on how the
unit is configured).
Parameter scrolling keys
Used to scroll through displays: [ ] down, and
[ ] up.
Adjust knob Used to enter parameter values.
Learn function key Used to enable the learn function within the 651 unit. In a
control system with a positive flow rate, the 651 learn
function determines the system characteristics necessary
for self-tuning control.
Sensor zero function key Used to zero an attached sensor.
Valve position control keys Used to select the valve position. The possibilities are
open, close, and stop.
Set point selection keys Used to select which set point (A through E), is the active
set point.
Lights The lights on the front panel are not visible unless lit.
They indicate which parameter(s) (ex. set point A), or
function(s) (ex. learn) is currently active.
Table 6: Summary of Front Panel Components