Description: TRS5-50 ( Gestra
)
Gestra TRS5-50
Product Name: Gestra TRS5-50
Product Brand: Gestra
Product Code: TRS5-50
Product Artikel: Gestra TRS5-50
Description
The temperature switch TRS 5-50 is used in conjunction with
temperature sensor TRG 5-6.. as safety temperature limiter or
monitor, for instance in steam boilers and (pressurised) hotwater plants. When the max. admissible temperature in the
superheater or the inlet line is reached, the safety temperature
limiter or monitor switches the heating off.
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.
Function
A platinum resistance thermometer Pt 100 to EN 60751 is
used as temperature sensor for the temperature switch TRS
5-50. A three-wire configuration is used for the electrical
connection.
The temperature switch processes the temperature-dependent changes in resistance of the temperature sensor and,
during normal operation, the seven-segment LED display
shows the adjusted switch-off temperature TMAX (°C) and
the actual value T (°C).
The switchpoint for MAX temperature can be variably adjusted
within the measuring range. Once the MAX temperature is
reached both output contacts of the temperature switch
open the safety circuit and the seven-segment LED display
for TMAX is flashing.
In addition the relay contact for external signalling equipment
is closed.
If the system is configured as safety temperature monitor,
the temperature switch does not automatically interlock the
deactivation of the heating. As soon as the temperature has
fallen below the non-adjustable hysteresis, the safety circuit
will be closed again.
However, if the system is configured as safety temperature
limiter, the temperature switch automatically interlocks the
deactivation of the heating. Note that once the temperature
has fallen below the non-adjusted hysteresis, the equipment
must be reset manually or externally in order to close the
safety circuit.
Any error or malfunction that occurs in the temperature
sensor, the electrical connection or the temperature switch is
indicated by the seven-segment LED display and the output
contacts will be opened.
An automatic self-testing routine monitors the safety functions in the temperature switch and the temperature sensor.
In the event of a malfunction the safety circuit opens instantaneously and switches the heating off.
Parameter settings can be changed, a MAX temperature
alarm can be simulated and the equipment can be reset by
operating the rotary button.
For external temperature indication the equipment is optionally available with an actual-value output 4-20 mA.
