152
E300 Installation and Commissioning Guide
Issue Number: 1
Figure 7-17 Load cell compensation
Table 7-28 Load cell compensation
Load cell compensation uses the Elevator car external load cell to apply a torque reference to overcome the mass of the Elevator car preventing roll
back on brake release. The external load cell compensation is sampled once during the start.
When this feature is active, any analog input may be routed to
Load Cell Compensation Input
(
E11
) to be used as the external load cell compensation
input, where it is expected that the output from the external load cell will be a ±10 V.
Position locking Start Lock Enable
(
I22
) must not be used at the same time as load cell compensation
Load Cell Compensation Enable
(
E10
). The
load cell compensation is not applied during an autotune.
Correct operation of load cell compensation requires adjustment to be made under the following conditions:
•
Balanced elevator car:
For a balanced elevator car, the torque shown in
Load Cell Compensation Torque
(
E13
) must be 0. If it is not 0 adjust the offset for the analog input
used.
•
Empty elevator car
After the balanced elevator car load cell offset has been made, the scaling for the analog input used must be modified with an empty elevator car.
When the brake releases but before the elevator car accelerates, if the scaling for the analog input used is setup correctly then
Speed Error
(
J31
) = 0
(in RFC-A and RFC-S mode) and
Final Torque Reference
(
J27
) =
Load Cell Compensation Torque
(
E13
), indicating that the torque reference
required to hold the car still is provided by the load cell compensation.
7.13 Fast stop
A fast stop is available for commissioning / start up and inspection of the Elevator system. The fast stop allows the user to define a fast stop
deceleration rate that is greater than the standard stop deceleration rate. The fast stop function as default is disabled, to enable the fast stop set
Fast
Stop Enable
(
H26
) = On.
The fast stop feature allows:
•
User defined fast stop deceleration rate
•
Faster stopping compared to the standard deceleration and jerk for commissioning / start up and inspection
•
Can be used to overcome hard stops due to standard deceleration and jerk during commissioning / start up and installation
Table 7-29 Fast stop parameters
Analog Input
Analog
Input Scaling
x(-1)
Analog Input
(Any analog Input)
Final Torque
Reference
Load Cell
Compensation
Torque
Analog Input
Offset
Analog Input Invert
Load Cell
Compensation
Input
Load Cell
Compensation
Enable
Load Cell
Compensation
Filter TC (E12)
+
7.31
+
+
Analog Input
Destination
+
+
J27
E13
E11
E10
Parameter
Detail
Load Cell Compensation Enable
(
E10
)
Enables the load cell compensation torque offset to be applied
Load Cell Compensation Input
(
E11
)
The input to the load cell compensations scheme. This is used as the destination for the analog input
which receives the load cell signal
Load Cell Compensation Filter Time
Constant
(
E12
)
Filters the final load cell torque reference such that the effect of electrical noise in the load cell signal, or
mechanical disturbances during travel affecting the load cell compensation are minimized
Load Cell Compensation Torque
(
E13
)
Indicates the final torque reference in 0.1 % of system rated torque units
Parameter
Detail
Fast Stop Enable
(
H26
)
Fast stop enable, default setting = Off 0), enabled using a control input routed to
Fast Stop Enable
(
H26
)
Fast Stop Deceleration Rate
(
G29
) Fast stop deceleration rate only active when fast stop is enabled.
Speed References
G02
to
G10
Speed References V2 to V10
A fast stop speed is selected as shown during the fast stop, this speed can be any speed selection from V1
through to V10 and must be set to 0 mm/s.
Summary of Contents for E300 Series
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