2. Front Panel Buttons and LED Indicators
KEY Function
Pressing SET/ENT key for at least 3 seconds switches between the operating display and
the parameter setting display. This key is used to verify and bypass parameter settings
when in the parameter group display.
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.
Holding for 3 seconds will reset the limit control latching relay if it is not in an over limit
condition. This will reset the time, maximum, and minimum display values.
/
(UP/DOWN)
(SHIFT)
RST
SET/ENT
(ENTER)
LED Function
OVER
OUT
ALM
LED activated when the PV value is higher than the limit setting if HI.LO is set to HI.
LED activated when the PV value is lower than the limit setting if HI.LO is set to LOW.
LED on while the latching relay is de-energized (when in over limit conditions for
reverse/failsafe mode).
LED on when the alarm relay energizes.
Control Keys
LED Display
ALMOVER OUT
PD570 Series Nova Process and Temperature Limit Controller Instruction Manual
11
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