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Description and Principle of Operation
TOUCH-SCREEN USER INTERFACE
MAIN DISPLAY
The Model 1095E "Freezer Chiller" is manually controlled through the Operator Interface located on the front of the unit, or
remotely by the I/O inputs to the PLC. The 128x64 pixel operator interface (HMI) is used to display and manually operate
the 1095E Chiller.
This is the main display screen of the touch Screen style user interface:
The top of the display contains the System Status or the current Alarm State.
SYSTEM STATUS AND ALARMS DISPLAYED
System Normal
Water Carry-over
Channel 1 (chiller) Hi Temperature
Channel 2 (freezer) Hi Temperature
Channel 3 (freezer) Hi Temperature
Column 2 Frozen
Column 3 Frozen
Column 2 Malfunction (not cooling)
Column 3 Malfunction (not cooling)
Hi System Vacuum
Low Sample Flow
System Offline
Column Held (from user input during Calibration)
RTD Failure
High Ambient Temperature
Amb measures the ambient temperature inside of the electronics enclosure.
The DwellTime displays the time remaining in whichever channel's status is dwell.
The CoolTime will display as zero during the defrost cycle and during the Pre-Chill cycle of a channel will display the time
remaining on that Pre-Chill cycle. If the column reaches negative 10°C the cycle will automatically switch from Pre-Chill to
Dwell. Below are the possible available status for each channel.
CHANNEL 1 STATUS DISPLAYED
OK
Fault
Warm
MAN.1095E.REVB.12232014
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