2.3 Overview of Function Code
C
hap.
2
FUN
CT
IO
N
C
O
D
E
S
L65
Unbalanced Load Compensation (Operation)
L66 (Activation timer)
L67 (Holding time)
L68 (ASR P constant)
L69 (ASR I constant)
L73 (APR P constant)
L74 (APR D constant)
L75 (Filter Time Constant for Detected Speed)
L76 (ACR P constant)
L134 Backlash (Delay Time)
L65 specifies whether to enable or disable the unbalanced load compensation.
Data for L65
Function
0
Disable the unbalanced load compensation.
1
Enable the unbalanced load compensation.
2
Enable the unbalanced load compensation (Backlash correction)
Unbalanced load compensation
This compensation function estimates an unbalanced load and calculates the required torque bias
amount inside the inverter.
Setting "67" to any general-purpose, programmable input terminal (by function codes E01 to E08,
E98 and E99) assigns the
UNBL
command. With the
UNBL
being assigned, entering a
UNBL
command following a run command starts estimating an unbalanced load. If no
UNBL
is assigned,
entering a run command starts it.
Just as the torque bias function, this compensation function reduces an impact made when the brake
is released even in elevator systems having no load sensors.
The table below lists function codes to be used in unbalanced load compensation.
Function
code
Name
Setting required
E01 to E08,
E98, and E99
Command assignment to
terminals [X1] to [X8]
Setting "67" assigns
UNBL
.
Turn the
UNBL
ON to start estimating an unbalanced
load (and start L66 and L67 timers).
If no
UNBL
is assigned, turn a run command ON to
start estimating an unbalanced load.
L66
Unbalanced load compensation
(Activation timer)
Specifies the maximum time length for estimating an
unbalanced load.
L68
Unbalanced load compensation
(ASR P constant)
Specifies the ASR P constant used in unbalanced load
calculation. If vibration occurs, decrease the constant.
L69
Unbalanced load compensation
(ASR I constant)
Specifies the ASR I constant used in unbalanced load
calculation. If vibration occurs, increase the constant.
L73
Unbalance load compensation
(APR P constant)
Specifies the APR P constant used in unbalanced load
calculation
L74
Unbalance load compensation
(APR D constant)
Specifies the APR D constant used in unbalanced load
calculation
L75
Unbalance load compensation
(Filter Time Constant for
Detected Speed)
Specifies the Filter time constant for detected speed
used in unbalanced load calculation
L76
Unbalance load compensation
(ACR P constant)
Specifies the ACR P constant used in unbalanced load
calculation
When an
UNBL
command is assigned to any general-purpose, programmable input
terminal, be sure to enter a run command before entry of an
UNBL
command. Entry of
an
UNBL
preceding a run command does not perform unbalanced load compensation.
2-161
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