Marstair A2LCELLARMATCH, Technical Manual, Page: 18 / 35

55908059-01
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C
Valve position in stand-by
0 = 25%
1…100% = % opening
50% 0 100 % I 91 218
C start-up delay after defrost 10 0 60 min I 40 167
A Pre-position time 6 0 18000 s I 90 217
A Hot gas bypass temperature set point 10 -85(-121) 200 (392) °C (°F) A 28 27
A Hot gas bypass pressure set point 3 -20 (-290) 200 (2900) barg (psig) A 62 61
A EPR pressure set point 3.5 -20 (-290) 200 (2900) barg (psig) A 29 28
C PID proportional gain 15 0 800 - A 48 47
C PID integral time 150 0 1000 s I 38 165
C PID derivative time 5 0 800 s A 49 48
A LowSH protection threshold 5 -40 (-72)
superheat set
point
K(°F) A 56 55
C LowSH protection integral time 15 0 800 s A 55 54
A LOP protection threshold -50 -85(-121)
MOP protec-
tion threshold
°C (°F) A 52 51
C LOP protection integral time 0 0 800 s A 51 50
A MOP protection threshold 50
LOP protection
threshold
200 (392) °C (°F) A 54 53
C MOP protection integral time 20 0 800 s A 53 52
A Enable manual valve position 0 0 1 - D 24 23
A Manual valve position 0 0 9999 step I 39 166
C Discharge superheat setpoint 35 -40(-72) 180 (324) K (F°) A 100 99
C Discharge temperature setpoint 105 -85(-121) 200 (392) °C (°F) A 101 100
C Liquid level perc. set point 50 0 100 % A 118 117
ADVANCED
A High Tcond threshold 80 -85(-121) 200 (392) °C (°F) A 58 57
C High Tcond integral time 20 0 800 s A 57 56
A Modul thermost setpoint 0 -85(-121) 200 (392) °C (°F) A 61 60
A Modul thermost di
ff
erential 0, 1 0.1 (0.2) 100 (180) °C (°F) A 60 59
C Modul thermost SHset o
ff
set 0 0 (0) 100 (180) K (°F) A 59 58
C
CO
2
regul. 'A' coe
ffi
cient
3.3 -100 800 - A 63 62
C
CO
2
regul. 'B' coe
ffi
cient
-22.7 -100 800 - A 64 63
C Start manual tuning 0 = no; 1= yes 0 0 1 - D 39 38 -
C
Tuning method
0…100= automatic selection
101…141= manual selection
142…254=not accepted
255= PID parameters identified model
50 0 255 - I 79 206 -
C
Network settings
0= 4800; 1= 9600; 2= 19200; 4 = 4800 bps; 5= 9600 bps;
6= 19200 bps; 16= 4800 bps; 17= 9600 bps; 18= 19200 bps;
20= 4800 bps; 21= 9600 bps; 22= 19200 bps; 24= 4800 bps;
25= 9600 bps; 26= 19200 bps; 28= 4800 bps; 29= 9600 bps;
30= 19200 bps.
2 0 30 bit/s I 74 201 CO
A
Power supply mode
0= 24 Vac; 1= 24 Vdc
0 0 1 - D 47 46
C
Enable mode single on twin (parameter disabled)
0= Twin; 1= Single
0 0 1 - D 58 57
C
Stop manual positioning if net error
0 = Normal operation; 1 = Stop
0 0 1 - D 59 58
C
Programmable regulation configuration
0 0 32767 - I 101 228
C Programmable regulation input 0 0 32767 - I 102 229
C Programmable SH regulation options 0 0 32767 - I 103 230
C Programmable regulation set point 0 -800(-11603) 800(11603) - A 112 111
C
Faulty closure alarm status
0/1=no/yes
0 0 1 - D 49 48