Number Of Times Of Heater Disconnection Alarm Delay - Mitsubishi Electric MELSEC FX Series User Manual

FX -4LC User's Manual
3U
Associated buffer memory
BFM No.
CH1 CH2 CH3 CH4
#1 #2 #3
#21 #22 #23
#53 #93 #133 #173 Heater disconnection alarm set value
#235
#238
#239
Caution
• Set a value lower than the actual heater current as the heater disconnection alarm set value.
• When external output is selected in the control mode switch function, the heater disconnection alarm
function is disabled. Heater current measured value is always set to "0".
• When the set value is "0", the heater disconnection alarm function is turned OFF. However, when turned
OFF, it is possible to monitor the heater current measured value.

6.11.2 Number of times of heater disconnection alarm delay

Set the number of times of delay for detecting heater disconnection alarm or current abnormality while the
output is OFF.
If abnormalities occur exceeding the preset number of times in the heater current measured value or current
value while the output is OFF, an alarm is issued.
The sampling period is 500ms for the heater current measured value and the current value while the output is
OFF.
Associated buffer memory
BFM No.
CH1 CH2 CH3 CH4
#1 #2 #3
#21 #22 #23
#53 #93 #133 #173 Heater disconnection alarm set value
#235
#4 Event (b9 Heater disconnection alarm)
#24 Heater current measured value
Number of times of heater disconnection alarm delay/
Number of times of current error detection when output is OFF delay
CT monitor method switch
CT ratio setting
#4 Event (b9 Heater disconnection alarm)
#24 Heater current measured value
Number of times of heater disconnection alarm delay/
Number of times of current error detection when output is OFF delay
6.11 Heater Disconnection Alarm Function (HBA)
Description
Description
6 Introduction of Functions
Reference
Subsection 8.2.2
Subsection 8.2.7
Subsection 8.2.17
Subsection 8.2.57
Subsection 8.2.60
Subsection 8.2.61
Reference
Subsection 8.2.2
Subsection 8.2.7
Subsection 8.2.17
Subsection 8.2.57
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