Filter
Top Products
269
CHAPTER 4 FUNCTIONS
4
4.29 Output Off-time Current Error Detection Function
4.29 Output Off-time Current Error Detection Function
Transistor output errors can be detected using this function. The current sensor (CT) for heater disconnection
detection is used to check for errors of when transistor output is off.
A heater current process value and heater disconnection alert current value are compared. If the heater current
process value is larger than the heater disconnection alert current value, an output off-time current error occurs.
Output off-time current errors are detected every 500ms. When transistor output is off for 500ms or less, output off-
time current errors are not detected. (CH Output off-time current error (b14 of Un\G5 to Un\G8) stays 0 (OFF).)
( Page 87, Section 3.4.2 (3))
The following is the timing output as an alert.
• 500ms × Setting value for Heater disconnection/output off-time current error detection delay count
(Un\G166)
If an output off-time current error status lasts longer than the time described above, Alarm code (05A
H
) is stored in
Write data error code (Un\G0). ( Page 370, Section 8.7)
(1) Modules where this function can be used
• Q64TCTTBWN
• Q64TCRTBWN
(2) Setting method
The setting method is the same as that for the heater disconnection detection function. ( Page 265, Section
4.28)
Common