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Section 4
Operation
FY-401 Digital controller
SYMBOL
NAME
FUNCTION
PV 1
Measured value
(PV) display
Displays PV or various parameter symbols
(Red)
SV 2
Set value
(SV) display
Displays SV or various parameter set values
(Green)
3
Set key
Used for parameter calling up and set value
registration
4
Auto/Manual key
Switches between Auto (PID) output mode and Manual output mode.
5
Shift key
Shift digits when settings are changed
6
Down key
*
Program hold
Decrease numbers (-1000, -100, -10, -1)
*
Program hold (Programmable controller)
7
Up key
*
Program run
Decrease numbers (+1000, +100, +10, +1)
*
Program run (Programmable controller)
OUT1
8
OUT1 lamp
Lights when OUT1 is activated
OUT2
9
OUT2 lamp
Lights when OUT2 is activated
AT
10
Auto tuning lamp
Lights when Auto tuning is activated
AL1
11
Alarm 1 lamp
Lights when Alarm 1 is activated
AL2
12
Alarm 2 lamp
Lights when Alarm 2 is activated
AL3
13
Alarm 3 lamp
Lights when Alarm 3 is activated
MAN
14
Manual output lamp Lights when manual output is activated
PRO 15
*
Program running
lamp
*
Flashes when program is running (Programmable controller)
OUT1% 16
OUT% bar-graph
display
Output% is displayed on 10-dot LED.
AUTO
