THERMOCUBE PAO CHILLER PART # 52-400-2G-1-PAO
SOLID STATE COOLING SYSTEMS, 167 MYERS CORNERS ROAD, WAPPINGERS FALLS, NY 12590 13
TELEPHONE: (845) 296-1300 FAX: (845) 296-1303 WEB: WWW.SSCOOLING.COM VERSION M9
Parameter Input Menu: The parameter input menu allows input of
temperature units, time units, PID parameters, and turns on or off auto-
tune.
TEMPUNIT = °C or °F
TIMEUNIT = s: seconds, m: minutes, h: hours
AUTOTUNE = ON/OFF.
ON turns on auto-tune where the controller determines PID
parameters. Once PID parameters have been determined AUTO-
TUNE reads OFF.
P1 HEAT = Proportional band for heating, 0-99.9 °C or °F.
P1 HEAT Factory Default Value = 5.6
I1 HEAT = Integral term for heating, 0-999 seconds
I1 HEAT Factory Default Value = 22
D2 HEAT = Derivative term for heating, 0-999 seconds
D2 HEAT Factory Default Value = 2
P2 COOL = Proportional band for cooling, 0-99.9 °C or °F
P2 COOL Factory Default Value = 2.8
I2 COOL = Integral term for cooling, 0-999 seconds
I2 COOL Factory Default Value = 22
D2 COOL = Derivative term for cooling, 0-999 seconds
D2 COOL Factory Default Value = 2
5.3 ALARMS
The ThermoCube chiller has two TTL level alarms, one for temperature
and one for system failure:
Temperature: TTL high (>4 VDC) fluid temp below alarm set point
TTL low (<0.5 VDC) fluid temp above alarm set point
System: TTL high (>4 VDC) system operating normally
TTL low (<0.5 VDC) system failure has occurred
A list of system failures causing the system alarm to change to TTL low
can be found in Section 6. In the event of a system failure, the alarm
type will be shown on the front display.
5.4 AUTO-TUNING
Some ThermoCube models come with an automatic tuning (auto-tune)
feature. Changing the PID parameters is normally not recommended
unless the RTD probe is moved to a new location. However, the
controller can calculate new PID parameters via the auto-tune function.
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