FC6A S
ERIES
MICROS
MART
L
ADDER
P
ROGRAMMING
M
ANUAL
FC9Y-B1726
19-9
19: PID C
ONTROL
I
NSTRUCTION
Upper/Lower Limit
Range Alarm
Turns ON the alarm output when (set point - alarm
value)
≤
process variable
≤
(set point + alarm value).
Turns OFF the alarm output when process variable
≥
(set point + alarm value + hysteresis).
Turns OFF the alarm output when process variable
≤
(set point - alarm value - hysteresis).
When (set point + alarm value) < process variable <
(set point + alarm value + hysteresis), the alarm
output maintains the state of the previous scan.
When (set point - alarm value - hysteresis) < process
variable < (set point - alarm value), the alarm output
maintains the state of the previous scan.
Set point: 200.0°C
Alarm value: 5.0°C
Hysteresis: 2.0°C
When 195.0°C
≤
process variable
≤
205.0°C, the alarm output is turned ON.
When process variable
≥
207.0°C, the alarm output is turned OFF.
When process variable
≤
193.0°C, the alarm output is turned OFF.
Process High Alarm
Turns ON the alarm output when process variable
≥
alarm value.
Turns OFF the alarm output when process variable
≤
(alarm value - hysteresis).
When (alarm value - hysteresis) < process variable <
alarm value, the alarm output maintains the state of
the previous scan.
Alarm value: 205.0°C
Hysteresis: 2.0°C
When process variable
≥
205.0°C, the alarm output is turned ON.
When process variable
≤
203.0°C, the alarm output is turned OFF.
Process Low Alarm
Turns ON the alarm output when process variable
≤
alarm value.
Turns OFF the alarm output when process variable
≥
(alarm value + hysteresis).
When alarm value < process variable < (alarm value
+ hysteresis), the alarm output maintains the state of
the previous scan.
Alarm value: 195.0°C
Hysteresis: 2.0°C
When process variable
≤
195.0°C, the alarm output is turned ON.
When process variable
≥
197.0°C, the alarm output is turned OFF.
Upper Limit Alarm
with Standby
Turns ON the alarm output when process variable
≥
(set point + alarm value).
Turns OFF the alarm output when process variable
≤
(set point + alarm value - hysteresis).
When (set point + alarm value - hysteresis) < process
variable < (set point + alarm value), the alarm output
maintains the state of the previous scan.
The gray-colored portion is where the standby
function operates.
Set point: 200.0°C
Alarm value: 5.0°C
Hysteresis: 2.0°C
When process variable
≥
205.0°C, the alarm output is turned ON.
When process variable
≤
203.0°C, the alarm output is turned OFF.
Type
Action
Example
OFF
ON
Alarm action point
Set point
Hysteresis
Alarm value Alarm value
Hysteresis
Alarm action point
OFF
ON
193.0°C
207.0°C
195.0°C
205.0°C
200.0°C
2.0°C
5.0°C
2.0°C
5.0°C
OFF
ON
Alarm action point
Hysteresis
OFF
ON
205.0°C
203.0°C
2.0°C
OFF
ON
Alarm action point
Hysteresis
OFF
ON
197.0°C
195.0°C
2.0°C
OFF
ON
+ Alarm action point
Set point
Hysteresis
Alarm value
- Alarm action point
OFF
ON
205.0°C
203.0°C
200.0°C
2.0°C
5.0°C
Summary of Contents for MICROSmart FC6A Series
Page 1: ...B 1726 7 FC6A SERIES Ladder Programming Manual ...
Page 8: ...Preface 7 FC6A SERIES MICROSMART LADDER PROGRAMMING MANUAL FC9Y B1726 ...
Page 32: ...1 OPERATION BASICS 1 20 FC6A SERIES MICROSMART LADDER PROGRAMMING MANUAL FC9Y B1726 ...
Page 96: ...3 INSTRUCTIONS REFERENCE 3 18 FC6A SERIES MICROSMART LADDER PROGRAMMING MANUAL FC9Y B1726 ...
Page 130: ...4 BASIC INSTRUCTIONS 4 34 FC6A SERIES MICROSMART LADDER PROGRAMMING MANUAL FC9Y B1726 ...
Page 192: ...9 SHIFT ROTATE INSTRUCTIONS 9 12 FC6A SERIES MICROSMART LADDER PROGRAMMING MANUAL FC9Y B1726 ...
Page 272: ...12 DISPLAY INSTRUCTIONS 12 24 FC6A SERIES MICROSMART LADDER PROGRAMMING MANUAL FC9Y B1726 ...
Page 284: ...14 REFRESH INSTRUCTIONS 14 6 FC6A SERIES MICROSMART LADDER PROGRAMMING MANUAL FC9Y B1726 ...
Page 502: ...25 DATA LOG INSTRUCTIONS 25 22 FC6A SERIES MICROSMART LADDER PROGRAMMING MANUAL FC9Y B1726 ...
Page 546: ...26 SCRIPT 26 44 FC6A SERIES MICROSMART LADDER PROGRAMMING MANUAL FC9Y B1726 ...
Page 598: ...APPENDIX A 14 FC6A SERIES MICROSMART LADDER PROGRAMMING MANUAL FC9Y B1726 ...