
2
*Error messages.
In the display of the ALFA 53-Grasso the following error messages can appear:
Sensor errors; Sensor alarms;
E0 - Oil Sensor failure. A0 - Maximum alarm Oil Sensor
E1 - Cylinder Sensor-1 failure. A1 - Maximum alarm Cylinder Sensor-1
E2 - Cylinder Sensor-2 failure. A2 - Maximum alarm Cylinder Sensor-2
E3 - Cylinder Sensor-3 failure. A3 - Maximum alarm Cylinder Sensor-3
E4 - Cylinder Sensor-4 failure. A4 - Maximum alarm Cylinder Sensor-4
E5 - Cylinder Sensor-5 failure. A5 - Maximum alarm Cylinder Sensor-5
E6 - Cylinder Sensor-6 failure. A6 - Maximum alarm Cylinder Sensor-6
E7 - Cylinder Sensor-7 failure. A7 - Maximum alarm Cylinder Sensor-7
E8 - Cylinder Sensor-8 failure. A8 - Maximum alarm Cylinder Sensor-8
E9 - Cylinder Sensor-9 failure. A9 - Maximum alarm Cylinder Sensor-9
E10 - Cylinder Sensor-10 failure. A10 - Maximum alarm Cylinder Sensor-10
E11 - Cylinder Sensor-11 failure. A11 - Maximum alarm Cylinder Sensor-11
E12 - Cylinder Sensor-12 failure. A12 - Maximum alarm Cylinder Sensor-12
General failures;
NC - No network communication Solution: - Check the network cable
EE - Settings are lost. Solution: - Reprogramme the settings.
Solution for sensor failures E0 ... E12:
- Check if the sensor is connected correctly.
- Check the sensor (1000at 0C).
- Replace the sensor.
To reset an alarm press the UP key.
*Technical details.
Model : ALFA 53-Grasso Thermo-Master
Art. Number : 1298150 (Thermo-Master), 1997150 (Sensor-Module GR12)
Range : 0/+200C, readout per 1C
Supply : 24 Vdc
Relays : RY1 Heating SPST 250V/8A(NO), (cos phi=1)
RY2 Fan SPST 250V/8A(NO), (cos phi=1)
RY1 and RY2 have one common (C);
RY3 Alarm SPDT 250V/8A(C-NO-NC), (cos phi=1)
Control : by pushbuttons on the front.
Front : Polycarbonate IP65
Input : Compressor on contact input (Potential free contact input)
Sensors : 13x Pt1000 temperature sensor (1000at 0C) connected on PCB
Network : RS485 network with supply (A,B,V+ and GND) 4-wire shielded cable
to PCB
Dimensions : Controller 90 x 71 x 58mm (hwd)
: PCB 120 x 105mm(hw)
Accuracy : ± 0,5% of the range
- Provided with memory protection during power failure.
- Connection with screw terminals.
- Equipped with self test function and sensor failure detection.