Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 25

Items
Startup tuning function
Operation mode
Cascade control
SV tracking function
Settings limiter function
Setting change rate limiter setting
function
Input type selection function
Sensor correction function
Primary delay digital filter
Temperature rise judgment function
External (other analog module) I/O
function
Output limiter function
Output change ratio limiter function
Control output flag
Transistor outputs selection
Alert function
Loop disconnection detection function
Loop disconnection detection dead
band function
Heater disconnection detection
function
Output OFF-time current error
detection function
Buffer memory data backup function
Default function
Description
The temperature control module constantly monitors the
control state, so when the control system is oscillatory
just after the control start, owing to the set value (SV)
change or fluctuation of characteristics of a controlled
object, this function allows PID constants to be
automatically changed.
Select from not used, monitor only, monitor + alert, and
monitor + alert + control for each channel.
Monitors the target control temperature using the master,
and corrects slave set values according to the deviation
between the set value (SV) and the actual value.
Controlled devices are adjusted by the slaves and, as a
result, control of the target control temperature reaches
the set value.
This function prevents sudden output changes in the
slave channel when turning OFF cascade control.
This function limits the settings range of the set value
(SV).
Select whether to set individually or en bloc the setting
variation rate limiters for temperature rise and fall.
Select either resistance temperature detector or low
voltage as the input sensor type.
When there is an error between the temperature process
value (PV) and actual temperature due to measurement
conditions, this function corrects the error. Corrects the
ratio to the full scale of the set input range as the error
correction value.
By setting the primary delay digital filter, a temperature
process value (PV) with smoothed transient noise can be
output.
This function judges whether the process value (PV) is
within the temperature rise judgment range during
temperature sensor sampling.
This function enables inputs and outputs using another
analog module on the system.
This function limits the upper and lower limits of the
manipulated value (MV).
The Output change ratio limiter functions to limit the
amount of change in the manipulated value (MV) per unit
time. Outputs to control targets that dislike output
mutations can be limited using the set output change
amount.
Turns ON and OFF the control outputs monitor.
This function selects the transistor output functions built
into the temperature control module.
This function sends an alert when a temperature process
value (PV) or deviation (E) meets the condition set in
advance.
This function measures the current flowing to the main
heater circuit, and detects disconnections.
This function sets the on-alert area centering on the set
value (SV).
This function measures the current flowing to the main
heater circuit, and detects disconnections.
This function detects errors when the transistor outputs
are OFF.
This function backs up the set values in the buffer
memory to non-volatile memory.
This function sets the buffer memory to the default
values.
Usability
Standard PID Heating/cooling
control PID control
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4 FUNCTION
4.1 Functions list
Reference
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