OI_EC2-XC645CX_A1_A2L_A3_EN_Rev01_866933.docx EC2-XC645CX 16/54
9.2 How to modify the set point of compressors and/or fans
!!! WARNING: before setting the target set points for the first time, check and, if
necessary, modify the type of refrigerant (par. FtyP) and the default unit of
measurement (par. dEU) for compressors and fans !!!
PRE-ACTION
1. Set the kind of refrigerant by means of the FtyP parameter (see 7.1 How to set the kind
of gas)
2. Set the measurement unit (dEU par.).
3. Check and if necessary, modify the set point limit (LSE and HSE par.).
PROCEDURE
1. Push the SET key for more than 2 seconds.
2. The Lower display will show the “SEtC1” label, the Upper display will show its value flashing.
3. To change the suction set point value, push the o or n within 30 seconds.
4. To memorize the new value and pass to the fan set point, push the SET key.
5. If the second circuit is enabled the Lower display will show the “SEtC2” label, the Upper
display will show its value flashing.
6. To change the suction set point value, push the o or n within 30 seconds.
7. To memorize the new value and pass to the fan set point, push the SET key.
8. The Lower display will show the “SEtF” label, the Upper display will show the fan set point
flashing.
9. To change its value, push the o or n within 30 seconds.
EXIT: Push the SET key or wait for 30 without pressing any keys.
THE INFO MENUE
The controller can display some information directly from the main menu.
The INFO menu is accessible by pushing and releasing the UP key:
Here below the list of the information that can be displayed:
NOTE: This information is displayed only if the related function is enabled
P1t: temperature value of the P1 probe
P1P: pressure value of the P1 probe
P2t: temperature value of the P2 probe
P2P: pressure value of the P2 probe (if P2 present)
P3t: temperature value of the P3 probe (if P3 present)
P3P: pressure value of the P3 probe (if P3 present)
P4t: temperature value of the P4 probe (if P4 present)
LInJ: status of the injection output (“On” – “OFF”)
This information is available only if one relay, oA2 ÷oA6 is set as “Lin”.
SEtd: Value of the Dynamic Set point. This information is available only if the Dynamic
set point function is enabled (par. dSEP ≠ nP)
dStO: Percentage of the PWM output driving the valve of the Digital compressor.
dSFr: value of temperature or pressure when the regulation filter of Digital compressor
is enabled (par. dFE = YES).
The “regulation filter” function calculates the average value of the pressure/
temperature during a PWM cycle and uses this value for the control algorithm.
AO1: Percentage of the analog output 1 (4 – 20 mA or 0 – 10 V).
This information is always available.
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