Supply Unit
TC - PT100 has a very wide operating voltage range. It can operate in the range of
24 - 240 Vac, 50/60 Hz.
If the supply of the device is taken directly from the output of the transformer (230V AC),
when the transformer is switched off by one of the MV fuses or when the transformer is operated
without a load with a fixed capacitor used to rectify the power factor, high voltage may be applied
to the supply of the device and the device supply may be damaged.
To ensure that the TC-PT100 control unit operates correctly and safely,
and to avoid being affected by high line voltage, we recommend you to use the
device with external 24 Vdc or use the device supply with an overvoltage
protection relay (ADG3X).
To prevent serious damage to the device, the supply input of the device must be switched
on before performing the insulation test of the electrical panel.
Alarms and Fan Activity
ALARM and TRIP relays are energized only when they exceed the set temperature values.
After the device is switched on, the FAULT relay is energized and the relay is de-energized if one of
the following conditions occurs:
■
Failure of storage memory in the device
■
Pt100 sensor faults ("Open Circuit, Short Circuit, ΔT Instantaneous Temperature Increase")
■
When there is insufficient feed input
■
If it is returned to Factory Settings during operation
The FAN relay output must be connected to the cooling fan or the air cooling system in the room
where the traction is located.
NOTE-1
:Do not connect the FAULT relay output to the tripping circuit of the MV Transformer.
NOT-2
: Disconnect the power before changing any terminal connection.
PT100 Sensor Connections
■
The PT100 sensors must have 1 white, 2 red output lines. (DIN 43760, IEC 751)
■
Ch2 channel should always be connected to the middle column of the MV transformers.
■
The Ch4 channel can be connected to measure the ambient temperature of the traction
core or to OFF.
The characteristics of the cables that transmit the Pt100 measurement signal
should be as follows:
■
It must be separate from the power cable
■
Transmission Cables must be spiral and surrounded by a protective shield
■
Section must be at least 0.5 mm²
■
It should be fixed firmly to the terminals
■
It should be as silver conductor
NOTE
: Using cables that do not meet the above specifications may cause abnormalities during
temperature reading. It should be noted that any parasitic noise in the signal lines may cause
anormalies in the Pt100 inputs (CH1-CH2-CH3-CH4) or in the sensors themselves.
Temperature Sensor Errors
In case of failure or at least one of the PTC100s connected to the measured temperature
value exceeds the full scale value, the energy of the FAULT relay is cut off, where visual and audible
warnings enter.In the meantime, the device will display the corresponding channel error on the
screen.
Short Circuit:
means that the sensor cables are in contact with each other, or that the device
temperature measurement falls below the minimum scale value of -10 ° C.
Open Circuit:
means that the sensor cables are open or the device temperature measurement
exceeds the maximum scale value of 250 ° C.
Press the
Reset
button that appears on the screen to energize the Fault relay and remove
the fault. This button is used for the Silent Error Alarm, in which case only the fault relay is energized
again, the acoustic warning is silent. However, the error continues to be displayed on the screen.
■
To remove the fault from the center, check the Pt100 connections and replace the faulty sensor.
