PT-100 Manual

© 2017 Sensata TechnologiesPage 60
Operation
4.2.4 Fault Indicator
Whenever a fault condition occurs, the red FAULT indicator illuminates (comes on or blinks) and
a fault code (F##) is displayed.
Info: If a fault code (F##) is displayed, refer to Section 5.3 to determine and troubleshoot
the fault condition.
Hard Faults - If the fault condition causes the controller to shut down, the fault indicator will be
on solid (see Figure 4-4). These are referred to as hard faults (F01 - F04, F06 - F09, F11 - F16).
Info: If the display is auto-scrolling and a fault condition occurs, the display will stop the
auto-scroll and display the fault code. If you do a quick press and release of the SELECT
pushbutton to acknowledge the fault has occurred, the display will resume automatically
scrolling—showing the fault display in sequence with the other operational displays.
Figure 4-4, Hard Fault Conditions
Fault Code
Display
(LED Indicators
OFF)
Fault LED
Indicator is
ON
(Hard Fault)
Figure 4-5, Soft Fault Conditions
Fault Code
Display
(LED Indicators
OFF)
Fault LED
Indicator is
BLINKING
(Soft Fault)
Soft Faults - Some fault conditions will not cause the controller to shut down. With these particular
faults, the fault indicator will blink (see Figure 4-5). These are referred to as soft faults (F05, F10).
4.2.5 Aux Relay Indicator
Whenever the internal auxiliary relay engages/energizes, the yellow AUX LED indicator comes on.
As a standalone controller, this relay closes the COM to N.O. terminals (and opens the COM to
N.C. terminals) any time the PT controller has a fault condition. If the PT controller is networked,
refer to the relay status in the remote control to determine the reason the relay has engaged.
Figure 4-6, Aux Relay Indicator
AUX Relay
Indicator is
ON
(relay energized)