Extech Instruments 96VFL

24 VFL Series User Manual v2.3 12/20
10. Programming Menu 3 (PID level)
• From any display, long press the SET and SHIFT (<) keys for five (5) seconds to enter the
Menu 2-3-4 ‘Level’ selection screen. Use the up/down arrows to select Menu 3 (or Menu
2 or 4).
• Use the SET key to scroll through the menu.
• Use the SHIFT (<) key to select a digit for editing and then use the up/down arrows to
change the setting. Press SET when done to continue scrolling.
• To change between menu levels, scroll to the ‘Level’ screen and use the up/down arrows
to select a menu.
• Press the SET key and the up-arrow key together to exit the Menu 2-3-4 menu loop.
Display
Definition
Description
Range
Default
PID Menu
Tuning and Lock parameter menu
Proportional
Band
Output 1 Pb setting.
Automatically set by Auto Tune.
The lower the setting, the higher
the output gain. The larger the
setting the lower the output
gain.
0.0 ~ 300.0%
(of span*)
10.0
Integral time
(reset)
Automatically set by Auto Tune.
The lower the setting the more
responsive the controller is to
PV/SV offset.
0 ~ 3600
secs.
240
Derivative (rate)
Automatically set by Auto Tune.
The lower the setting, the more
responsive the controller is to
accelerating process changes.
0 ~ 900 secs.
60
Cycle time
Interval between automatic
output changes. Set to the
longest time possible without
causing process oscillations. Set
to '0' for the 4-20mA analog
output option.
0 ~ 100 secs.
15
Cooling
Proportional
band
Same as ‘Pb’ for OUT 2.
0.0 ~ 300.0%
(of span*)
10.0
Cooling Integral
time
Same as ‘ti’ for OUT 2.
0 ~ 3600
secs.
240
Cooling
Derivative
Same as ‘td’ for OUT 2.
0 ~ 900 secs.
60
Cooling Cycle
time
Same as ‘Ct’ for OUT 2.
0 ~ 100 secs.
15