Ttr200 Dtm Diagnostic Information; Hart / Dtm Diagnostic Information; Analog Output / Led Diagnostic Information - ABB TTR200 Operating Instructions Manual

TTR200 DTM diagnostic information

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8 TTR200 DTM diagnostic information
8.1

HART / DTM diagnostic information

Configuration changed
Important
The transmitter indicates that the parameters or configuration data has changed (HART:
Configuration changed flag). After intentional or desired reconfiguration, the notification can be
acknowledged via the <Reset> button.
8.2

Analog output / LED diagnostic information

The TTR200 features a green and a red diagnostic LED for fault signaling.
The green LED indicates that the supply voltage is connected and the red LED provides fault
information about the sensor, sensor lead and unit; this information corresponds to
"Over/underdrive" for the output signal in the 4 ... 20 mA current loop.
Important
After connecting or switching on the supply voltage, it may take up to 15 seconds before this is
acknowledged by the green LED. If neither green nor red LED lights up after this period, the
unit is defective.
As a rule, the green or the red LED lights up. For this reason, when faults related to the sensor,
sensor lead or unit are signaled by the red LED, the green LED does not light up, although the
supply voltage is connected. If a sensor or unit fault is detected, the red LED indirectly signals
that the supply voltage is connected. Once the sensor or unit fault is eliminated and the red LED
turns off, the supply voltage signal appears in the green LED.
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30 TTR200 OI/TTR200-EN