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Important Notes
Usage for the intended purpose
The temperature switch TRS 5-52 is used in conjunction with temperature sensors TRG 5-6.. as max.
-min. limit switch, for instance in steam boilers and (pressurised) hot-water plants. The temperature
switch detects and indicates a MIN and a MAX temperature.
The temperature switch TRS 5-52 is designed for use in conjunction with temperature sensors
TRG 5-63, TRG 5-64, TRG 5-65, TRG 5-66, TRG 5-67 and TRG 5-68.
A platinum resistance thermometer Pt 100 to EN 60751 is used as temperature sensor for the tem-
perature switch TRS 5-52. A three-wire configuration is used for the electrical connection.
The temperature switch processes the temperature-dependent changes in resistance of the tempera-
ture sensor and during normal operation the seven-segment LED display shows the actual value.
The switchpoints for MIN and MAX temperature can be variably adjusted within the measuring range.
When the MIN or MAX temperature is reached, the MIN or MAX output contact is switched over and
MIN or MAX LED is illuminated.
Any error or malfunction that occurs in the temperature sensor, the electrical connection or the settings
is indicated by the seven-segment LED display and will trigger a MIN and MAX alarm.
If an error occurs in the temperature switch TRS 5-52, only the MIN and MAX alarm is raised and the
system is restarted.
Parameter settings can be changed or a MIN/MAX alarm be simulated by operating the rotary button.
For external temperature indication the equipment is optionally available with an actual-value output
4 - 20 mA.
Function
Safety note
The equipment fulfils a safety function and must only be installed, wired and commissioned by quali-
fied and competent staff.
Retrofitting and maintenance work must only be performed by qualified staff who - through adequate
training - have achieved a recognised level of competence.
Danger
The terminal strips of the equipment are live during operation.
This presents the danger of electric shock!
Always
cut off power supply
to the equipment before mounting, removing or connecting
the terminal strips!
Attention
The name plate specifies the technical features of the equipment. Note that any piece of
equipment without its specific name plate must neither be commissioned nor operated.
