H D 2 - D M - A / D M - A M
Measured Values / Parameters
Subject to reasonable modifications due to technical advances.
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Measured Values / Parameters
Supply Voltage Supervisory
Voltage Level of the primary and secondary bulk power (not at DM-AM).
Board Type Detection
The type of the board on which the HD2-DM-A is installed is detected.
Board Redundancy Detection
Detects whether the HD2-DM-A is installed on a redundant board or
not.
H1 Segment Voltage
The voltage at the segment input of the Diagnostic Module is measured.
H1 Segment Current
The current supplied to the segment is measured.
H1 Segment Communication
Communication activity is detected if any valid frames (Preamble, SOF,
EOF) are detected. Loss of communication is detected if no valid signal
is recognized for at least 4 seconds
Segment/Field Device Noise
Monitors the current field device noise level. To minimize alarm indica-
tions activated by tolerance influences during measurement, the HD2-
DM-A/DM-AM indicates the first noise warning if the noise level exceeds
the default noise level of 100 mV. This is an empirical value derived from
practical experience, it can be modified for your system requirements.
Type
Value
Precision
+/- 5 %
Type
Values
Precision
+/- 5 %
Measuring Range
0-40 V
Default value
9 V ... 32 V
Type
Value
Precision
+/- 5 %
Measuring Range
0-6.5 A (depends on the mother-
board)
Default value
0 mA ... 500 mA
