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Module 96-PA-RCM / 96-PA-RCM-EL
6.13 Temperature measurement input
Fig. Connection variant
for temperature
measurement via a PT100
PT100
With a module, the basic device is equipped with
a temperature measurement input. Temperature
measurement is carried out via the analog input
on terminals 27 and 28.
The measured values of the thermistor input are
obtained through determination of the average
value from cumulated resistance values. The av-
erage value is converted to a temperature value in
the basic device and is displayed.
The basic device with module supports the follow-
ing temperature sensors:
·PT100 (default setting)
·PT1000
·KTY83
·KTY84
ATTENTION
Damage to the basic device, the module and/or
your system due to short circuit!
Inadequate insulation of the operating equipment
(such as temperature sensor) at the analog inputs
with respect to the supply circuits can cause dam-
age to your basic device, module and/or system.
·
Ensure a reinforced or double insulation
of your operating equipment with respect
to the supply circuits!
·
Use shielded lines to connect the tempera-
ture sensor!
·
Do not exceed a total load of 4 kΩ (tempera-
ture sensor and cable)!
Example of temperature sensor:
A temperature sensor is used for measurement in
the proximity of non-insulated mains wiring in a
300 V CAT III network. Solution:
Use reinforced or double insulation for the tem-
perature sensor for the 300 V CAT III network! This
corresponds to a test voltage of 3000 V AC (1
min. duration) for the temperature sensor.
