Emerson E300 Series - Load Measurement

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E300 Design Guide 173
Issue Number: 1
Figure 7-19 Fast stop during acceleration
7.15 Load measurement
During each travel operation, the E300 Advanced Elevator drive can measure the load in the Elevator car and provide an output to the Elevator
controller to indicate the direction of least load. This output can be used during emergency back-up operation for example, where a low voltage back-
up power supply becomes active to indicate the direction in which to travel with the least load.
Table 7-30 Load measurement
The load measurement and direction output for emergency backup operation is only available in RFC-A and RFC-S operating modes.
Figure 7-20 Load measurement
Fast stop enable
Direction
STO, Drive enable
Speed selection
Creep selection
Run Jerk 3 ()G15
()
Acceleration
Rate G11
Fast stop disabled
- Standard profile, deceleration, creep and stop active
Fast stop enabled
- Fast stop deceleration and fixed 200 ms stop jerk
Fast stop during
acceleration enable
active
Run
Jerk 1
()G13
Parameter Detail
Load Measurement Direction Output (O01) Final load measurement direction output
Load Measurement Direction Invert (O02) Load measurement direction output invert
Load Measurement Value (O03) Load measurement value
Load Measurement Time (O04)
Time period for load measurement. Positive value measurement during start, negative value
measurement during travel.
NOTE
Speed
Motor current
Brake release
Start
Brake release delay
Load Measurement Time ()
(Negative value = travel ms)
O04
Start optimizer
Start lock position
Load Measurement Time ()
(Positive value = Start ms)
O04