Unit installation

61
7. USER TEST
• All led are switched on, display shows “8.8.8.” and every pixel of LCD display is black;
To exit the test mode:
• Switch board off;
• reset dip switch address
• switch board on
SOFTWARE TEST MODE
To enter software test mode:
• Switch board off;
• set dip switch address to 15 (all dip switch ON)
• switch board on
The board will act as a master with address #1, and the user interface is active, but the unit can not be switched
on. During software test mode all eeprom parameter can be changed. The analog input values are shown with no
final calibration, so temperatures are measured in ohm (like output of PTC probe) and pressures are measured in
0-100% from the 4÷20mA of the input range.
To exit the test mode:
• Switch board off
• Reset dip switch address
• switch board on
I/O CHANNELS
ANALOG INPUT
Definitive Description Range
S1 Suction Pressure (first circuit) 4 - 20 mA
D1 Discharge pressure (first circuit) 4 - 20 mA
O1 Oil pressure (first compressor) 4 - 20 mA
ST1 Suction Temperature (first circuit) PTC (-10 ÷ +50 °C)
TOUT Leaving Water Temperature (used only in mother board - Outlet
temperature or in multi barrels systems with M69 =1 - EV12T)
PTC (-10 ÷ +50 °C)
S2 Suction Pressure (second circuit) (not used with twin compressor) 4 - 20 mA
D2 Discharge pressure (second circuit) (not used with twin
compressor)
4 - 20 mA
O2 Oil pressure (second compressor) 4 - 20 mA
ST2 Suction Temperature (second circuit) (not used with twin
compressor)
PTC (-10 ÷ +50 °C)
TIN Returning Water Temperature (used only in mother board - Inlet
Temperature or in multi barrels systems with TBD =1 - EV34T)
PTC (-10 ÷ +50 °C)
TAE Not used PTC (-10 ÷ +50 °C)
RH Not used 4 - 20 mA
ANALOG OUTPUT
(0÷10V powered by board; + positive, - negative)
Def. MNEM. Description Range
AO1 EXPV1 Electronic controlled Expansion Valve (1st circuit) 0 -10 V
AO2 EXPV2 Electronic controlled Expansion Valve (2nd circuit) (not used
with twin compressor)
0 -10 V
AO3 FSC1 Fan Speed Control (1st circuit) 0 -10 V
AO4 FSC2 Fan Speed Control (2nd circuit) (not used with twin
compressor)
0 -10 V
DIGITAL INPUT
Input at 115/230 V AC, power supply given from the auxiliary circuit.
Definitive MNEM. Description
AC Common for Digital Input
A1 TH1 SSPS (Thermistors) (first compressor)
A2 CB1 MT Circuit breaker (first compressor)
A3 O1 Oil level alarm (first compressor); (only for screw compressor)
A4 HP1 High Pressure Switch (first compressor)