D397-01-880 Issue E
Page 20
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Operation
4.4
The view screen
The view screen can be set to various view options. Refer to
for the various view screen options that
can be set. The following describes the view screen that shows three gauges. (Refer to
).
The status of the setpoint relays is shown at the bottom line of the view screen. Relays that are on are shown in
reverse video.
Active gauges are fitted with a resistor that is unique to the type of gauge. When a new gauge is connected, TIC
automatically identifies the gauge and indicates that a new gauge has been detected as shown in
.
Figure 16 - New gauge connected
In this example, new gauges have been plugged into channels 1 and 2. Scroll up/down (
/
) to the selected gauge
channel and press the 'Select' (
) button. The display will identify the gauge type and display either an output or
message. Gauges, which measure up to atmospheric pressure (high pressure gauges), will automatically display an
output.
4.5
Turning gauges and relays ON/OFF
Pressing the 'Cycle' (
) button with view screen items selected will turn the items 'on/off'.
Low pressure gauges (AIGX and AIM) default to 'OFF' as they should not be operated at pressures greater than their
upper range limit. Low pressure gauges may be switched on manually by scrolling to the display line and pressing the
'Cycle' (
) button, or they may be linked to and protected by a suitable high pressure gauge (refer to
).
If the selected item is the relay status line, a list of the relays will appear. Scroll to the required relay and use the
‘cycle’ (
) button to switch the item. When the relay is activated, the display section on the view screen will change
to reverse video.
Note:
Low pressure gauges must be 'enabled' by the Logic Interface before TIC can turn them ON and OFF. This is
done either by fitting a link across the appropriate pins on the mating connector, or using an external
switch.
The logic interface plug supplied with the TIC has links for this purpose.
If System Interlock (SYSI) is active, pressing the 'Cycle' (
) button will not switch on low pressure gauges.
Conversely, if SYSI is opened during the vacuum cycle, all connected controllable components will be
switched OFF.
