Specifications

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NOTE
The Model 518 ‘Sensor Interface Board’ includes an internal ZERO adjustment
pot that is far more accurate than the microprocessor setting.
PERFORMANCE DATA
ChEK – (oFF) Select control accuracy monitor.
rEAD – (Var) Read control accuracy monitor.
TECH – (Ct A) Read Autotune cycle data. Using the Autotune function is not
recommended with the temperature controller
VEr – software version
rSEt – (none) Do Not Change. If the unit is reset, all programmed information
will be lost. Each parameter must be re-entered manually.
5.3.6 LEVL 4 (Level 4)
Level 4 is a “hidden” level. This allows “locked” functions to be inaccessible to
any unauthorized user. Access to Level 4 is gained through “VEr” in Level 3.
Press and hold “t” and “u” for ten seconds.
Enter Level 4 at “LoCK”, release “t” and “u” together.
LoCK – (LEV.2) Select from three lock options.
LEV.3 – Locks Level 3 and 4 only – Technical Functions.
LEV.2 – Locks Levels 2, 3 and 4 only – Configuration and Technical Functions.
ALL – Locks all functions (unrestricted LEVL, VEr, dAtA, SP.LK)
Note: Locked functions and options may be read.
ProG – (Auto) Program mode auto-exit switch. Auto-exit returns display to
normal after 60 seconds of key inactivity, select StAy to disable.
no.AL – (oFF) Disable SP2 alarm annunciator -AL-. Select on to disable -AL-.
diS.S – (dir) Do Not Change. Display sensitivity.
DEr.S – (0.1) Do Not Change. Derivative sensitivity.