Table of Contents
Advertisement
Safety
Product
Mechanical
information
information
installation
Table 7-27 Motor contactor control
Speed selection
Creep Speed
Direction
Motor contactors
STO, Drive enable
FAST disable
Drive active
Start lock
Brake output
7.12
Load cell compensation
Load cell compensation uses the elevator car load cell to apply a torque reference to overcome the mass of the people in the elevator car when
running preventing roll back on brake release.
Any of the 3 analog inputs may be routed to Load Cell Compensation Input (E11). It is expected that the output from the load cell is a ±10 Vdc type
suitable for connection to the Unidrive M analog inputs. Scaling and offsetting of the load cell signal is achieved using the standard features of the
analog input used.
The final load cell compensation torque reference is sampled once (see description for Elevator Software State 2 in Table 9-13 State machine and
control state on page 445) and used as a torque feed forward reference. Sampling once prevents noise generated during travel, electrical or
mechanical, from being detected by the load cell and injected as a torque reference.
Figure 7-17 Load cell compensation
(Any analog Input)
170
Electrical
Getting
User Menu A
installation
started
Run Jerk 1 G13
Torque producing current
Control terminal 29
Control terminal 28
Control terminal 31
Control terminal 26
Control terminal 25
Analog Input
Analog Input
Analog Input
+
+
+
E11
Load Cell
Compensation
Load Cell
Input
Compensation
Filter TC (E12)
E10
Load Cell
Compensation
Enable
Advanced
Commissioning
Parameters
Deceleration Rate (
V1 Creep Speed Reference (
G01
(
)
Creep Stop Jerk G18
Offset
Analog Input
7.31
Destination
Analog
Input Scaling
x(-1)
Load Cell
E13
Compensation
Torque
Final Torque
+
+
Diagnostics Optimization CT MODBUS RTU Technical Data
Creep Stop
G17
)
)
(
)
Analog Input Invert
Reference
J27
E300 Design Guide
Issue Number: 1
Advertisement
Table of Contents
