TOHO ELECTRONICS TTM-339 - Manual (Page 12)

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4.13.2 Operation amount current limiter
The operation amount and current value are limited at each point obtained by dividing SLL to SLH into 10.
At the operation amount limiter points 1 to 11, the operation amount resulted from calculation is limited.
At the current value limiter points 1 to 11, the operation amount is limited by the operation amount at the
current value limiter point determined from a measured current value and present operation amount if the
measured current value at each point exceeds the value [setting value - current limiter sensitivity].
This operation amount changes each time when measuring the current value.
The final operation amount is limited by using either smaller limit of the above two.
The function is effective when [OUT 2 selection = 4 to 20mA], CT existent, [CNT = 1] and operation amount
current limiter effective. OUT2 outputs MV1 (equivalent to OUT1).
100％
Operation amount
0
Temperature
0℃
=SLL
1200℃
=SLH
120℃ 240℃ 360℃ 480℃ 600℃ 720℃ 840℃ 960℃ 1080℃
30A
Current
0
- For an input below the table range, the SLL operation amount and the current value are used for calculation .
- For an input above the table range, the SLH operation amount and the current value are
used for calculation.
Temperature
0℃
=SLL
1200℃
=SLH
120℃ 240℃ 360℃ 480℃ 600℃ 720℃ 840℃ 960℃ 1080℃
AHC
* The limiter on the current side is at the location indicated by
([setting value - sensitivity]) at each point.