TR250
12410-0701-03
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5 / 18
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2
Default Settings
Ex works, 6 programs are selectable. Based on these programs, the relay can be easily adapted to the
application. Normally only the temperatures of the alarms have to be changed.
Press button S
et ► for 10 s when switching on supply voltage. After that the program
Pr1 . . . Pr4
(from
firmware -01:
Pr1 . . . Pr6
) and/or the display value (
°C
/
0.1C
/
°F
) can be selected with
▲/▼ and confirmed
with S
et ►(°C = Resolution 1°C, 0,1C = Resolution 0,1°C, °F = Resolution 1°F).
Pr1
:
Protection of motors/generators with 3 sensors Pt 100 (
Pr 1
is factory setting)
AL1
= pre-alarm,
AL2
= tripping,
AL3
= sensor-alarm (all sensors).
Pr2
:
Protection of transformers with 3 sensors Pt 100.
AL1
= forced cooling with a periodically test 1/week,
AL2
= pre-alarm and sensor-alarm (all sensors),
AL3
= tripping.
Pr3
:
Protection of transformers with 1 sensor Pt 100 and 2 PTC-circuits.
AL1
= forced cooling with a periodically test 1/week (Pt 100),
AL2
= pre-alarm and sensor-alarm (all sensors) (PTC),
AL3
= tripping (PTC)
Pr4
:
Single association
S1
–
AL1
,
S2
–
AL2
,
S3
–
AL3
Pr5
:
Protection of transformers with 2 PTC-circuits (from firmware -01).
AL1
= sensor-alarm (sensor S2 and S3),
AL2
= pre-alarm
AL3
= tripping
Pr6
:
Protection of transformers with 3 PTC-circuits (from firmware -01).
AL1
= forced cooling with a periodically test 1/week
AL2
= pre-alarm and sensor-alarm (all sensors)
AL3
= tripping
Alarm (
AL1
...
AL3
) = Relay (1 … 3).
Sensor type PTC (thermistor): Display
of resistance of sensor in kΩ