Setup/Tuning Loop - Thermo Scientific NESLAB EX Series Installation, Operation And Maintanance Manual

Setup/Tuning Loop

(Digital One/Digital Plus)
The Setup/Tuning Loop is used to tune the controller's PID parameters (HEAt);
enable/disable auto restart (AStrt); determine how the unit will react when a
fault occurs (FAUlt) — either shut down (on) or continue to run (oFF); and to
configure the temperature display to indicate to a tenth or a hundredth of a
degree (rES).
To enter the loop you must be displaying the reservoir fluid temperature, press
and hold and then press
keys to sequence through the loop and to change a display. Use
confirm any changes.
Changes made in the Tuning/Setup Loop take affect when
the StorE prompt. Pressing
- 21 -
. The display will indicate tunE. Use the arrow
Thermo Fisher recommends that only
a qualified technician change PID
parameters. Incorrect PID values will
hamper unit performance. See page
42 for factory preset PID values.
No
at the prompt aborts all changes.
to
Factory preset = off
Factory preset = off
Factory preset = 0.1
is pressed at
Yes