ABB SCK, System Manual

Page: 24 / 244

24 System Manual SCK Gas Sampling System 42/23-81 EN Rev. 4
Controls and displays
The control cabinet is the central control point of the sampling system. The electric
power supply and signals for the entire sampling system are connected and dis-
tributed here. It is contains the display and operating unit for monitoring and operat-
ing the system.
The control program is equipped with various locking mechanisms that prevent
damage to the gas sampling probe due to incorrect operation or failure of individual
modules. If not all locking conditions are met, operation is not possible. This safe-
guard is only overridden by personnel safety measures.
The picture shows controls on the control cabinet (side view left, front operating
panel right):
The controls and displays on the control cabinet have the following function:
No. Designation Function
1
Main switch
 Switches power supply on and off
2
Uninterruptible
power supply
switch
(optional)
 Switches uninterruptible power supply on and
off
3
Touchscreen
 Display and operating unit for monitoring the
system; for operation see Description of the
controller on page 37
4
Warning buzzer
 See Protective installations on page 60
5
Service switch
 Puts the system into service mode
 Cancels service mode
Control cabinet
Controls on the
control cabinet
Function of controls