Omron K6PM-TH User Manual page 92

4 Monitoring the Temperature in Control Panel with the Main Unit and the Software Tool
Alarm Latch of the Main Unit
This function is used to latch the alarm status of the comprehensive alarm (threshold 1 or 2).
Even if the measured value drops by as much as the amount of hysteresis (3°C/5.4°F) from the thresh-
old values threshold 1 or threshold 2 after the comprehensive alarm (threshold 1 or 2) occurs, the sta-
tus of the comprehensive alarm (alarm bar and transistor output 1 and 2) is retained (alarm latch).
The alarm latch is released by pressing and holding (for 5 seconds min.) the SEG/ALM RST Key on the
Main Unit front-panel.
Make the following setting either by enabling the "Alarm latch" on the Setting K6PM Screen of the soft-
ware tool, or through communications.
Setting name
Alarm latch
The changed setting parameter is enabled after power is again supplied to the Main Unit, or after soft-
ware reset.
External Trigger Input of the Main Unit
This is a function for temporarily interrupting the measurement by an external trigger input of an exter-
nal contact.
Temperature measurement is stopped while the external trigger input is ON.
Temperature measurement is performed while the external trigger input is OFF.
During measurement interruption due to an external trigger input, the temperature display on the Main
Unit front-panel is fixed to the value immediately before interruption, and the "MON" LED is not lit.
Application example:
When an infrared thermal sensor is installed, the temperature monitor target may be deviated due to
opening or closing of the door. Therefore, stop temperature measurement by turning ON the external
trigger input. Restart measurement by turning OFF the external trigger input after installation is com-
plete.
Note When measurement interruption or restart is performed as a result of an external trigger input, the mea-
surement is interrupted or restarted immediately, and the status display "MON" lights up or goes out after
communications with the temperature sensor is checked. Therefore, depending on the number of con-
nected temperature sensors, it may take time for the "MON" LED to light up or go out as a result of ON/OFF
of the external trigger input (approximately 30 seconds when 31 temperature sensors are connected).
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Setting range
ON (Enable), OFF (Disable)
K6PM-TH Thermal Condition Monitoring Device User's Manual (H231)
Initial value
ON (Enable)