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5.1 Programming without Display Module
Programming is only possible if the EchoTREK is in Level Measuring
Mode and receives valid echo i.e. "ECHO" LED is lit !
The following can be programmed without display module
•
Assignment of the 4 mA to a required e.g. min. level / max. distance
•
Assignment of the 20 mA to a required e.g. max. level / min. distance
•
Error indication by the current output (Hold, 3.6 mA or 22 mA)
•
Damping (10, 30 or 60 sec)
•
Reset to the factory default
Note: Current output can also be assigned in inverted mode:
4 mA = 100% (Full), 20 mA = 0% (Empty)
Procedure of programming: press button in the relevant sequence and check the state of the LED-s. Symbols for the states of the LED-s:
= LED is off,
Minimum level, (0%, empty tank) assignment to 4 mA
Action
1) Check for a valid ECHO
2) Press NEXT
button steadily
3) Press UP
button steadily
4) Release buttons
SE/SG-300 series two-wire compact ultrasonic level transmitters
= LED is blinking,
= LED is on,
Led state following the action
=
Valid ECHO, transmitter programmable
=
EchoTREK in programming mode
=
4 mA assigned to the distance (see picture)
=
Programming completed
= LEDs are blinking alternatively
Use level in tank or a fix target e.g. the wall
= Dont care
B
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