Schulz Control I Manual De Instrucciones página 27

2.tr – Minimum temperature (start)
If the measured temperature is lower than the minimum temperature (start), and a start is requested from the compressor, the interface
will not allow the compressor to start until the temperature increases to values above the minimum temperature (start). When this con-
dition occurs, the interface will show the A3123 Err alarm. The alarm will be automatically eliminated when the temperature is above the
minimum temperature (start). This alarm cannot be manually eliminated.
To disable this function, set the value to 0 (zero).
Maintenance Function:
To force the compressor to enter in unload mode, regardless of the pressure values, press and hold the RESET key for 5 seconds.
• The display will show "OFF" (press DOWN to see the temperature or other items in the user menu).
• The load symbol C will blink (without the arrow).
• The unload time will be disabled; the compressor will remain in relief mode indefinitely.
To exit the maintenance function and return to normal operation, press RESET.
The maintenance function will be disabled if the compressor is stopped. The normal operation will be restored next time the com-
pressor starts.
Temperature Sensor:
The Control I interface was designed for using a KTY type of temperature sensor. The KTY sensor offers a calibration range of -32°C to
150°C.
RS 485 Communications (optional):
A RS 485 serial communication port may be installed in Control I interface.
A: Remove interface back cover (1).
B: Fasten the RS 485 card (2) on the interface back cover using the two screws provided (3). The interface back cover is equipped with
two holes for this purpose.
C: Connect the RS 485 card cable (4) to the RS485 socket (5).
D: Connect the other RS485 cable end (4) in the X05 plug of Control I interface (6).
E: Screw the back cover to the interface again.
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