937B Controller Instruction Manual
pg. 21
6
Operating the Series 937B Controller
6.1 Power
937B Vacuum System Controller can be powered by universal AC voltage (100 to 240 V, 50/60 Hz). The
power can be switched ON and OFF using the
Power
switch on the front panel. It is recommended to
power OFF the controller when not in use.
6.2 Front Panel Control Lock
All front panel keys can be made inactive when the controller's front panel controls are locked.
REMOTE
is then displayed at bottom right corner of the LCD display.
Simultaneously press the Left and Right arrow keys to lock or unlock the front panel controls or to display
the lock status.
The front panel can also be locked or unlocked with serial communications commands.
See
RS232/RS485 Communications Commands
for more information.
6.3 Front Panel Display
6.3.1
Standard Front Panel Display
A 3.6-inch 320x240 pixel color LCD displays the pressure, relay information, sensor type, and other
operational and set up information.
A label on the left-hand side of the front displays identifies the name of the channel (A1, A2, B1, B2, C1,
C2). An illuminated green LED shows the active channel for channel setting purpose. A front panel
display for the 937B is shown in Figure 6-1.
Figure 6-1 937B LCD Front Panel Display for Pressure Measurement
in Leak Detection Mode