Eaton CROUSE-HINDS Series Instruction Manual page 20

16
• The 'Block modes' are standard FF parameters and control the operation of the
F809F module. Note that these parameters are normally set by the DCS system.
Do not change any setting unless you are familiar with their meaning. For more
information on these parameters, consult your system vendor or the fieldbus
specification.
• Power Feed A/B voltage
Adjust the limits so that they correspond to the minimum and maximum output
voltage according to the datasheet of your bulk power supplies. Default operating
range is 19.2 V to 30 V.
Default
Minimum value
Maximum value
Alarm hysteresis (no alarm
Condition: high limit > low limit by ...
Note that the limit values have to be in rising sequence at all times:
Low-low-limit ≤ low-limit < high-limit ≤ high-high-limit
and high limit must be at least 1 V higher than low limit.
Note that the F809F device will round the entered values to a single digit decimal (example:
23.34V will be rounded to 23.3V, and 23.35V will be rounded to 23.4V).
The DTM does not perform the rounding, so that the entered value (e.g.
23.34V) will persistently be indicated with the
value differs from the value in the F809F device.
Best is to enter values with a single digit decimal only (e.g. 23.4V).
• Module temperature
The default values are limits for the F801 fieldbus power supply maximum
operating temperature of 65 °C. The user may reset this to the maximum
operating temperature of the power supply used or select a lower limit based on
normal operating temperature of the cabinet. Setting the limit at the lower of the
maximum operating temperature of the power supply or 10 °C above the normal
operating temperature is recommended.
Default
Minimum value
Maximum value
Alarm hysteresis (no alarm
• Latching Alarm Acknowledge / Alarm Acknowledge required
Setting alarms to latch (see 'Set Alarms to Latch' below) means that if an alarm
occurs, the alarm message will persist until 'Latching Alarm Acknowledge' button
is clicked, even if the actual problem(s) disappeared. Multiple alarm may occur,
which then all will persist simultaneously. This way, intermittent alarms will not
be missed. Once an alarm occurred, 'Alarm Acknowledge' will be ticked to
indicate that acknowledgement is required. If the actual problem(s) disappeared,
the alarm will only be cleared after 'Latching Alarm Acknowledge' is clicked.
Low-low limit: 19.2 V
Low limit: 19.2 V
High limit: 30 V
High-high limit: 30 V
0V
40V
alarm no alarm) 0.5V
1V
pencil symbol , as the DTM
High limit: 65 °C
High-high limit: 65 °C
0°C
32767°C (Note: module
operates up to 70 °C)
alarm no alarm) 1°C
INM F809F-Plus (DTM) Rev 1.8