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4-51
2000-OSM, F1
NOTE
On power loss, Set Points and Ramp Rates for all programmable zones (PROG and
PROG/C) are lost. You must re-enter the Values manually or execute the method
stored in the Method Table.
Alarms
Digital Temperature Controller alarms are described in "Temperature Board" alarms in Section 6.
When a temperature alarm occurs, it appears as *** ALARM *** flashing on the Background screen
and * TEMP BD ALARM * flashing on the Manual Temperature Control Mode screen. To identify the
specific alarm, press the F4 (Alarm) soft key on the Background screen.
ELECTRONIC PRESSURE CONTROL OPTION
The optional Electronic Pressure Control (EPC) replaces the mechanical regulators and gauges in the
Pressure Control Panel. The EPC provides up to five individually controlled pressure zones.
Physical Description
The EPC is comprised of an Electronic Pressure Control Multibus PCB and an EPC Module which
contains up to five pressure zones.
NOTE
The EPC is set up at the factory and should not require adjustment on site.
Operator Settings
You can set the zone functions for the EPC and also program specific functions in the method tables.
The functions you can set or program appear on the following screens:
Screen
Function
Manual Pressure Control Mode
Valve On/Off
Set Point, by zone
Ramp Rate, by zone
Pressure Configuration Table
Range
Zone
Name
Pressure Control Table
Zone relationship
Set
Point,
by
entry
number
in
method
Ramp
Rate,
by
entry
number
in
method
Pressure Check Table
Zone relationship
Alarm Pressure value, by entry number in method
Action,
by
entry
number
in
method
Manual Pressure Control Mode
This screen allows operator control of the Electronic Pressure Controller. The Manual Pressure
Control Mode screen allows you to change these fields: Enter Valve, Zone #, Set Point, and Ramp
Rate. Always check the original application-specific pressure limits listed in the Data Package
provided with the analyzer to ensure any changes are valid. To access this screen perform the
following steps: