Thermotronik TT-77
5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
5.1 Start-up procedure
The device will automatically switch on when connected to power. It will first briefly display the software version, at which time
the device will also check the built-in components. The display will then switch to displaying measurements.
The following describes the function of the display and control unit:
LEDs
Control keys
Display
If an error message appears in the display during operation, please refer to the
Troubleshooting
table under chapter “Service
and Repair”.
5.2 LED statuses
LEDs above the measurement display indicate the status of the temperature switching outputs. The LEDs are permanently as-
signed to the switching outputs.
The following table shows the factory settings:
LED 1 – yellow
Status switching output 1
LED 2 - red
Status switching output 2 (if applicable)
LED 3 – yellow
Status switching output 3 (if applicable)
LED 4 – red
Status switching output 4 (if applicable)
The switching characteristics of the LED (on if switching contact closed or open) can be changed.
9
Bühler Technologies GmbH
BE140013 ◦ 07/2019
Summary of Contents for Thermotronik TT-77
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