Diagnostics Optimization CT MODBUS RTU Technical Data
332
E300 Design Guide
Issue Number: 1
This parameter is only used when
Start Lock Enable
(
I22
) = On (1).
When set to 0, this parameter disables movement compensation between when the mechanical brake is applied at the end of travel to when the
torque is removed from the elevator motor.
When set > 1, this parameter enables compensation for the movement of the elevator motor shaft from when the mechanical brake is applied at the
end of travel to when the torque is removed from the elevator motor. This gives a smooth transition of load from the mechanical brake to the motor on
the next travel. The second function is to set a maximum limit for the position change that can be used in the compensation, which is expressed as a
percentage of the diameter from 0.01 % to 2.55 %. This is to prevent a mechanical fault from introducing an excessive position change into the
position controller. In the event that the position change for a travel was greater than
Start Lock Position Change Maximum
% (
I23
), the movement
compensation is not used for the next travel but the position controller will still operate.
A notch filter can be inserted be applied to the
Final Current Reference
(
J20
) to remove the effect of a mechanical resonance in the system. Notch
Filter Centre Frequency
(
I24
) defines the centre frequency (f
0
) in Hertz and
Notch Filter Bandwidth
(
I25
) defines the bandwidth (
f
BW
) which is the
frequency difference between the 3dB points of the notch filter in Hertz. The centre frequency should be set slightly below the resonant frequency of
the mechanical load. The Q of the filter is given by Q = f
0
/ f
BW
. If
Notch Filter Bandwidth
(
I25
) is at its default value of zero, then the notch filter is
disabled. It should be noted that although it is possible to set a bandwidth that is higher than half the centre frequency, the bandwidth of the filter is
limited to half the centre frequency.
See
Notch Filter Centre Frequency
(
I24
).
I23
Start Lock Position Change Maximum
Mode
RFC A, RFC-S
Minimum
0.00
Maximum
2.55
Default
0.00
Units
%
Type
8 Bit User Save
Update Rate
Background
Display Format
Standard
Decimal Places
2
Coding
RW, BU
I24
Notch Filter Centre Frequency
Mode
RFC A, RFC-S
Minimum
50
Maximum
1000
Default
100
Units
Hz
Type
16 Bit User Save
Update Rate
Background read
Display Format
Standard
Decimal Places
0
Coding
RW
I25
Notch Filter Bandwidth
Mode
RFC A, RFC-S
Minimum
0
Maximum
500
Default
0
Units
Hz
Type
16 Bit User Save
Update Rate
Backround Read
Display Format
Standard
Decimal Places
0
Coding
RW
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