Siemens PolyCool Superheat CPS 40 Manuel D'installation Et D'utilisation page 40

Picture Function Parameter
Pressure sensor
alarm delay when
compressor ON
Low limit for
temperature
measurement
Minimum superheat
T
Control
algorithm
40/136
Siemens
Building Technologies
Code
PA
TL
MI
1)
Can be parameterized only if external or internal capacity control has
been selected in the configuration mode.
2)
SD can be parameterized only if external capacity control has been
selected in the configuration mode.
SD = 1 means that 0 V / 4 mA corresponds to max. cooling capacity
SD = -1 means that 0 V / 4 mA corresponds to min. cooling capacity
3)
Operation safety control
4)
Once the actual temperature value is over this limit of TL, an alarm will
appear.
The firmware version V1.24B0048 (batch number S130513 or
higher) includes a new control algorithm. In order to ensure
backward compatibility, please refer to the table below.
Parameter code old
T XP
old
T TN
old
T D
old
MOP XP
old
MOP TN
old
1)
Recommendation for air coolers "dry" expansion.
2)
Recommendation for liquid coolers (for example shell-and-tube heat
exchangers).
The formulas in the table above provide approximated values for
controller settings. Therefore additional fine-tuning is highly
recommended.
CPS40
Adjustable
Range/increment
0...60 s / 1 s
4)
-70...-40 °C / 1 °C
-94...-40 F / 1 F
0...4 K / 0...7.2 F
Parameter code new
T XP * 1,25
old
T TN
old
T D
old
50 K / MOP XP
50 K / MOP XP
MOP TN
old
CE1U3372XX / H 74 319 0555 0 d
Settings Procedure
Default
5 s
-40 °C /
1 °C
-40 F /
1 F
2 K /
3.6 F
1)
1
new
2)
0,75
new
2013-10-01