26
8.1.3
Controller Status: colours led and meaning
UNO-CONTROLLER can assume four different status, which are represented by the colors assumed by the
Status Indicator and by the TOP LED (see Figure 29):
The GREEN color indicates that the Setpoint value has been reached (within the
tolerance defined in the alarm subpage, see paragraph 8.2.7) and that the system is working
properly.
Controller Status: NORMAL
The YELLOW color indicates that the controller is in transient regime. The Yellow light
will appear after the controller is turned on and after any Setpoint change. The system is working
properly, it is not in alarm and no action is needed. As soon as UNO-CONTROLLER reaches the
temperature setpoint, UNO-CONTROLLER Status changes to NORMAL and the color turns
GREEN. If UNO-CONTROLLER cannot reach the setpoint value within the maximum time defined
by the operator (see paragraph 8.2.7), the Status changes to ALARM and the color turns ORANGE.
Controller Status: TRANSIENT
The ORANGE color indicates that the current temperature value is not correct and its
value is out of the set tolerance (see section
ALARMS
in paragraph 8.2.7). Most commonly this is
related to gas leaks or gas source(s) running low. Verify that all cables are correctly connected.
Check all tubing for gas leaks and pressure in gas supply tanks.
Controller Status: ALARM
The RED color indicates that there is a problem with the unit itself (for example the
sensor is broken). The system is on alarm. Turn the system off, wait for 5 minutes, and turn it
back on. If the color is still red, contact Okolab at www.oko-lab.com for support.
Controller Status: ALARM
Tip
►
The TOP LED follows the same color code as the Status Indicator (see Figure 29). To enable/disable
the TOP LED follow the instruction reported in paragraph 8.2.8.5.
TOP LED
Status Indicator
Figure 29. Status Indicator and TOP LED.
