Carel µC2SE User Manual page 34

- Communication of the logical status of the digital outputs to
expansion:
bit0= compressor
bit1= compressor 4
bit2= heater 2
bit3= reversing valve
bit4= warning
bit5= condenser pump
bit6= fans in alarm status
bit7= fan status in alarm (ON= 1; ofF= 0)
bit8= speed to be set (100%= 1; speed from probe= 0)
bit9= indicates fans 2 for defrost circuit 2
bit10= heater 1
bit11= open damper
bit12= close damper
bit13= humidifi er
- Signals from the expansion board:
bit0= probe alarm 5
bit1= probe alarm 6
bit2= probe alarm 7
bit3= probe alarm 8
bit4= zero crossing alarm circuit 2
bit5= tLan alarm valve 2
bit6= fans on signal (symbol on)
bit7= fan symbol fl ashing circuit 2
bit8= max fan speed circuit 2
- Signals to the expansion board:
bit0= temporary season (internal) cool= 1; heat= 0;
bit1= frozen season (same as SV)
bit2= temporary status (1)/stand_by (0)
bit3= frozen status (1)/stand_by (0)
bit4= low voltage alarm
bit5= high voltage alarm
bit6= enable control for expansion
bit7= enable low_noise in cooling
bit8= enable low_noise in heating
bit9= boiler
bit12= digital signature for µChiller (to the expansion)
- Alarms/warnings for EVD2:
bit0= low superheat alarm
bit1= EEPROM alarm
bit2= probe alarm
bit3= MOP warning
bit4= LOP warning
bit5= high suction temperature warning
bit6= valve open after power failure alarm
bit7= fl at battery alarm
- Controls/status indicators for EVD2:
bit0; bit1= compressor load step (0= 0%; 1= 50%; 2= 100%)
bit2= standby circuit 2 (0= ON; 1= standby)
bit3= chiller/pump circuit 2 (0= chiller; 1 = pump)
bit4= defrost circuit 2 (0= no defrost; 1= defrost)
bit5= forced valve closing (for pump down)
bit6= enable smart defrost
bit7= enable low noise
bit8= type of condenser probe (0= temp/1= press)
bit9= condenser temp/press probe available
bit10= restart unit after valve open alarm (set in reset_alarms)
bit11= enable control for driver 2
- Model of unit
0= air-air unit
1= air-air heat pump
2= air-water chiller
3= air-water heat pump
4= water-water chiller
5= water-water heat pump, reversal of gas circ.
6= water-water heat pump, reversal of water circ.
7= condenser
8= condenser with reverse cycle
9= water-cooled condenser
10= water-cooled condenser with reverse cycle
D 0 4200
D 0 0
D 0 0
D 0 0
D 0 0
D 0 10 fl ag
34
- 0 (R)
- 0 (R)
- 0 (R)
- 0 (R)
- 0 (R)
1 2 (R/W)
µC 2 SE - +030220426 - rel. 2.0 - 03.08.2009
207 Integer
207 Integer
207 Integer
207 Integer
207 Integer
207 Integer
Table 4.n