MKS 356 Micro-Ion Plus Series, Инструкция по эксплуатации, Страница: 31 / 76

Operation
Micro-Ion
®
Module Instruction Manual - 356007-GP
31
In
stallation
O
per
a
tion
Maintenance
Before You
Begin
3.5 Turn the Micro-Ion Gauge
ON or OFF
When the module starts up, the Conductron sensor is ON. As pressure
decreases to a level that allows the Micro-Ion gauge to operate, the sensor
turns ON the Micro-Ion gauge.
If the Micro-Ion gauge is in manual filament mode and one filament is
inoperable, you must switch to the other filament by sending the IG0
command, then send the IG1 command, or push the Gauge button.
You can also use the module gauge button to turn the Micro-Ion gauge ON
or OFF. Figure 3-4 illustrates the gauge button and gauge LED on the
module control panel.
You can also install a switch between pins 1 and 5 on the 15-pin
subminiature D connector that enables the Micro-Ion gauge to be turned
ON or OFF. Pin 1 must be grounded to pin 5 to enable the Micro-Ion gauge
to operate. A process relay or switch can be used to perform this function.
• To turn ON the Micro-Ion gauge, the process relay will close the switch.
• To turn OFF the Micro-Ion gauge, the process relay will open the switch.
If the gauge is manually turned OFF, the optional numeric display on the
module indicates pressure as measured by the Conductron sensor and the
gauge status indicator turns to blinking amber.
Table 3-3 describes the gauge status and corresponding LED states.
Using RS-485 communications, you can use the IG and IGM commands to
turn ON/OFF the Micro-Ion gauge. See page 50.
Figure 3-4 Micro-Ion Gauge Button and LED on Module Control Panel
Gauge Button
Gauge LED
Table 3-3 Micro-Ion Gauge Status LED
Gauge Status LED State
Micro-Ion gauge and Conductron sensor ON, both gauge filaments OK Solid green
Micro-Ion gauge and Conductron sensor ON, one gauge filament cannot sustain emission Blinking green
Micro-Ion gauge is OFF, pressure > turn-ON point Solid amber
• Operator used switch or command to switch Micro-Ion gauge sensor OFF
• Optional numeric display indicates pressure as measured by Conductron sensor Blinking amber