5-60
E51 Display Coefficient for Input Watt-hour Data
Use this coefficient (multiplication factor) for displaying the input watt-hour data (
5_10
) in a part
of maintenance information on the keypad.
The input watt-hour data will be displayed as follows:
E51 (Coefficient for input watt-hour data) × Input watt-hour (kWh)
Setting E51 data to 0.000 clears the input watt-hour and its data to "0." After clearing,
be sure to restore E51 data to the previous display coefficient; otherwise, input
watt-hour data will not be accumulated.
For the procedure for viewing maintenance information, refer to Chapter 3 "OPERATION
USING THE MULTI-FUNCTION KEYPAD."
E65 Command Loss Detection (Level)
When the analog frequency command (by frequency setting through terminals [12], [C1], and
[V2]) has dropped below 10% of the expected frequency command within 400 ms, the inverter
presumes that the analog frequency command wire has been broken and continues its operation
at the frequency determined by the ratio specified by E65 to the reference frequency. When the
frequency command level (in voltage or current) returns to a level higher than that specified by
E65, the inverter presumes that the broken wire has been fixed and continues to run following the
frequency command.
In the diagram above, f1 is the level of the analog frequency command sampled at any given time.
The sampling is repeated at regular intervals to continually monitor the wiring connection of the
analog frequency command.
Avoid abrupt voltage or current change for the analog frequency command. Otherwise,
a broken wire condition may be recognized.
When E65 is set at 999 (Disabled), though the command loss detection signal (REF
OFF) is issued, the reference frequency remains unchanged (the inverter runs at the
analog frequency command as specified).
When E65 is set at "0" or 999, the reference frequency level that the broken wire has
been recognized as fixed is "f1 × 0.2."
When E65 is set at 100% or higher, the reference frequency level of the broken wire
fixing is "f1 × 1."
The command loss detection is not affected by the setting of Analog input adjustment
(filter time constants: C33, C38, and C43).
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