Yamato SI 401, Instruction Manual, Page: 16 / 48

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Operation Method
Operation Mode and Function List
The operation function of this unit is as follows;
No. Name Description Page
1.
Overheating
prevention
function
Auto overheating
prevention function
This function is set to be automatically activated
(auto reset) when the temperature exceeds the
setting temperature by 12
℃
.
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Overheating
prevention device
Though the device shares power source, display,
and key input with the controller, it has
independent temperature measurement circuit,
CPU, sensor and output circuit. Overheating
prevention temperature can be set using the
operation panel.
The unit stops operation when the device is
activated. The unit starts operation again when
the POWER switch is pressed again (manual
reset).
2. Calibration offset function
This calibration offset function is for calibrating
the difference occurred between the required in-
furnace temperature and control temperature
(sensor temperature) of the controller. This unit
can be calibrated toward either plus side or minus
side of the whole temperature range.
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3.
Overheating prevention
temperature calibration
function
The temperature of overheating prevention device
is automatically corrected when the temperature
of controller is collected.
-
4. Recovery at power failure
The unit starts operation with the same condition
as just before power failure if it occurs during
operation. Press the START/STOP key to start
the unit again.
-
5. Setting value locking
This function locks the established operation
status.
It can be set and cancelled with the SUBMENU
key.
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