2.3 Overview of Function Code
C
hap.
2
FUN
CT
IO
N
C
O
D
E
S
L90
PG abnormal (operation choice)
H76 PG abnormal mode 3(detection range)
H77 PG abnormal mode 3(detection timer)
L91
PG Error Detection (Detection level)
L92
PG Error Detection (Detection time)
L90 to L92 specify the PG error detection conditions and the inverter operation in case of error. If
the speed error is within a domain specified by L91 during the detection time specified by L92, the
inverter regards it as an error and continues running or stops with/without an alarm according to the
mode specified by L90.
- Data setting range (L91): 0 to 50 (%)
(L92): 0.0 to 10.0 (s)
In the above figure,
through
represent the following states.
: The phases A and B of the PG are reversely connected.
: Excessive speed deviation (|Detected speed| > |Reference speed (final)|)
: PG wires broken (During zero speed operation, that is, at -0.1 to +0.1 Hz, no PG error can be
detected.)
: Excessive speed deviation (|Reference speed (final)| > |Detected speed|)
If L90 = 0
When the speed is within domains
through
in the above graph, the inverter regards it as an
error. Independent of the PG error detection, the inverter continues to run.
If a PG abnormal signal
PG-ABN
is assigned to any general-purpose, programmable output terminal
by setting E20 to E24 and E27 to “76”, the inverter turns the
PG-ABN
ON.
If L90 = 1
When the speed is within domains
through
in the above graph, the inverter regards it as an
error and stops with an excessive speed deviation error (
ErE
).
If L90 = 2
When the speed is within domains
through
in the above graph, the inverter regards it as an
error and stops with an excessive speed deviation error (
ErE
).
If L90 = 3
When the speed is within domains
through
in the above graph, and when the speed is within
domains
or
in the above graph, the inverter regards it as an error and stops with an excessive
speed deviation error (
ErE
).
Reference
speed
(final)
Detected speed
Detection
level
③
②
①
④
⑦
⑧
⑤
⑥
-0.1 to +0.1Hz
L91
L91
L90 = 0,1,2
Figure 1
Figure 2
Reference
speed
(final)
Detected speed
Detection
level
③
②
①
④
⑦
⑧
⑤
⑥
-0.1 to +0.1Hz
L91
L91
Detection
Level (H76)
Detection
Level (H76)
L90 = 3
2-171
Содержание Frenic lift
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