QUANTECH
94
FORM QWC4-NM1 (221)
ISSUE DATE: 02/28/2021
SECTION 6 - OPERATION
11. To remove the SD card, GENTLY press the card
in slightly then release the pressure. The card
should then pop out slightly to allow removal.
DATA LOGGING
A 2GB SD card (p/n 031-03466-000) may be inserted
into the 03478 IPUII SD card slot to record the chiller
operating parameters at 5 second intervals. The data is
stored in a folder named RMYYYYMM where YYYY
is the year and MM is the month the data was recorded.
The controller creates a file for each day within this
folder with the format YYYYMMDD.csv where DD
equals the day of the month in addition to the Y Year
and M Month fields. For example: The folder named
RM201503 is a folder created in March of 2015.
Within this folder would be a file for each day of that
month that the datalogging is running. If a review of
the History Report shows that an abnormal event oc-
curred on March 3rd at 2:05pm, the user can import the
20150303.csv file into Excel and look at the system
parameter details leading up to the 2:05pm event.
Follow all QuantechSafety Directives
when inserting or removing the SD card
since the card is located inside the control
cabinet.
To start the Data Logging, insert the SD card into the
SD card slot on the 03478 IPUII board. The label on
the SD card should be facing outwards.
Once the SD card is inserted and the unit is powered
up, press the OPTIONS key. Then press the Down Ar-
row key to advance to the DATA LOG TO FLASH-
CARD selection.
Next press the Right Arrow key to select ON then press
the ENTER key to start the Data Log. A 2GB SD card
will hold about 8 months worth of data. A smaller card
may be used that will hold less data but should be tested
for compatibility. The controller operating system does
not support SD cards larger than 2GB. When the SD
card becomes full, the oldest date file is automatically
deleted and a new day log file is written in its place.
To stop the data logging and retrieve the SD card, press
the OPTION key and then the Down Arrow key to dis-
play the DATA LOG TO FLASHCARD option and
then use the Right Arrow key to select OFF then press
the ENTER key.
Again, follow the Quantech Safety Directives to stop
the chiller, power off the unit and open the control cab-
iner door to retrieve the SD card.
Once inside the control cabinet, lightly press in on the
SD card and then release the pressure. The SD card
should pop out slightly to allow removal. You may then
copy the files to a PC for analysis or email the file to
someone. The files are saved as a CSV format which
can be read by Excel. Below is a sample of some of the
data imported from a QTC Chiller. Once the file is read
in to Excel, you can hide unrelated columns or plot re-
quired parameters to analyze the data.
TABLE 29 -
DATA LOGGING
HOUR MIN SEC
SYS 1
SUCT
PRESS
SYS 1
DSCH
PRESS
SYS
1 OIL
PRESS
SYS 1
SUCT
TEMP
SYS
1 SAT
SUCT
TEMP
SYS 1
SUCT
SHEAT
SYS 1
MTR
CURR
FLA
SYS 1
DSCH
TEMP
SYS
1 SAT
DSCH
TEMP
SYS 1
DSCH
SHEAT
SYS
1 OIL
TEMP
SYS 1
COMP
STATUS
SYS 1
ECON
SYS
1 FAN
STAGE
SYS 1
MOTOR
TEMP1
PSIG PSIG PSIG
O
F
O
F
O
F
AMPS
O
F
O
F
O
F
O
F
O
F
0
0
10
82.6
84.4
84.4
93
77.5
15.5
0
83
78.6
4.4
82
OFF
OFF
0
107.9
11
0
15
82.6
84.4
84.4
93
77.5
15.5
0
83
78.6
4.4
82
OFF
OFF
0
107.9
11
22 20
82.6
84.4
84.4
93
77.5
15.5
0
83
78.6
4.4
82
OFF
OFF
0
107.9
11
22 25
82.6
84.4
84.4
93
77.5
15.5
0
83
78.6
4.4
82
OFF
OFF
0
107.9
11
22 30
82.6
84.4
84.4
93
77.5
15.5
0
83
78.6
4.4
82
OFF
OFF
0
107.9
11
22 35
82.5
84.4
84.4
93
77.4
15.6
0
83
78.6
4.4
82
OFF
OFF
0
107.9
Summary of Contents for QWC4
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