Precision Digital PD540 - Manual (Page 11)

2. Front Panel Buttons and LED Indicators
Key Function
Pressing SET/ENT key for at least 3 seconds switches between the operating display and
parameter setup groups. This key is used to verify and bypass parameter settings in the
parameter setup groups.
Used to change the value of digits when setting parameters.
Used to move between parameter groups.
Used to move to the next digit when setting parameters.
/
(UP/DOWN)
(SHIFT)
SET/ENT
(ENTER)
LED Function
SP2, SP3, SP4
EV1, EV2, EV3
OUT
MAN
LEDs activate when corresponding Set Point is selected for use.
LEDs activate when corresponding relays energize.
LED activated to display when control output is active.
LED on when manual output control mode is selected. LED blinks during auto-tuning
setup process.
Control Keys
LED Display
PD540 Series Nova Digital Process and Temperature Controller Instruction Manual
11