15
e
8
Functional display
LUC-T differentiates between the
operational faults alarm and warning.
(See also "Information on the
measuring point" page 28.)
2-Wire
If the LUC-T identifies an alarm
• the bargraph flashes, if the display is
plugged
• the current output adopts a
preselected value (-10 % = 3.8 mA,
+110 %, HOLD)
• an error code is output in V9H0
If the LUC-T identifies a warning
• the instrument continues to measure
• an error code is output in V9H0
4-Wire
If the LUC-T identifies an alarm
• the bargraph flashes, if the display is
plugged
• the red LED lights up
• the current output adopts a
preselected value (-10 % = 2.4 mA,
+110 %, HOLD)
• an error code is output in V9H0
If the LUC-T identifies a warning
• the red LED flashes
• the instrument continues to measure
an error code is output in V9H0
Function
green LED
red LED
Bargraph in
display
Error code in
V9H0?
Caution 2-wire versions: The green LED is not used to display operational status due to power
consumption. There is no red LED
2-Wire
Entry completed
Error status
• Alarm
• Warning
YES
YES
4-Wire
Entry completed
Error status
• Alarm
• Warning
YES
YES
V H
9
0
E 6 2 0
LED off
LED on