Mitsubishi Electric MELSEC-Q series User Manual page 57

Judgement value in case of the following conditions
Ex.
• Sampling cycle: 10ms/8CH
• Rate alarm warning detection period: 10 (10ms)
• Rate alarm upper limit value: 300 (30%/s)
The present value is compared to the previous value in 10ms intervals, and is checked if the value increased
by 30 digits (0.3%).
(e) Warning detection target
CH Digital output value (Un\G11 to Un\G18) is a target regardless of the use of the scaling function.
(f) Setting procedure
1.
Set Enable (0) to Conversion enable/disable setting (Un\G0).
2.
Set Enable (0) to Warning output setting (Un\G48).
3.
Set values to CH Rate alarm warning detection period (Un\G118 to Un\G125).

CH Rate alarm warning detection period (Un\G118 to Un\G125)
*1 Set an integral multiple of the conversion cycle for each digital conversion method. If not, change rates are detected in
the maximum cycle that satisfies both of the following.
• Rate alarm warning detection period or less
• Integral multiple of the conversion cycle
In addition, set a value per 10ms unit. A value per 1ms unit is rounded off.
4.
Set values to CH1 Rate alarm upper limit value (Un\G126) to CH8 Rate alarm lower limit value
(Un\G141).

CH Rate alarm upper limit value (Un\G126, Un\G128, Un\G130, Un\G132,
Un\G134, Un\G136, Un\G138, Un\G140)

CH Rate alarm lower limit value (Un\G127, Un\G129, Un\G131, Un\G133, Un\G135,
Un\G137, Un\G139, Un\G141)
5.
Turn on then off Operating condition setting request (Y9).
10
300
10000
1000 1000
Item
Item
CHAPTER 4 FUNCTIONS
= 30 [digit]
Setting range
10 to 5000 (ms)
Setting range
-32768 to 32767 (-3276.8%/s to
3276.7%/s)
4
*1
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