Brake Control Optimization - Emerson E300 Series Design Manual

Safety Product Mechanical
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10.6.2 Control loop gains
During the deceleration and stopping of the Elevator there are both Run speed and current control loop gains available along with a current loop filter.
The position feedback filter available is active during the complete travel and if required this should be adjusted to suit the start, travel and stop.
Table 10-7 Stop optimization parameters
Parameter
Run Speed Loop P Gain (I06)
Run Speed Loop I Gain (I07)
Run Current Loop P Gain (I08)
Run Current Loop I Gain (I09)
Run Current Loop Filter (I10)
Drive Encoder Feedback Filter (C09)
10.7

Brake control optimization

Optimization of the brake control can be carried out adjusting the brake release apply times along with the current and frequency thresholds. The
brake release and apply times will vary dependant upon the time taken for the motor energise and dependant upon the brakes mechanical
arrangement and operating times.
Table 10-8 Brake control optimization parameters
Parameter
Brake Control Release Delay
(D04)
Brake Control: Upper Current
Threshold (D06)
Brake Control: Brake Release
Frequency (D08)
Brake Control Apply Delay (D05)
Brake Control: Lower Current
Threshold (D07)
Brake Apply Frequency (D09)
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Electrical Getting
User Menu A Commissioning
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Run speed loop gains are optimized to overcome any overshoot during a transition in speed any vibration
during travel. The P gain should be increased to overcome overshoot and reduced to soften the transition
between speeds. The I gain can be reduced to overcome, reduce vibration and acoustic noise.
Recommended (P) = 500 to 1800 (I) = 1000 to 3000
High values of current loop P gain (> 150 % of autotune value) can result in motor acoustic noise. Low values
of current control loop gains (< 50 % of autotune value) will result in oscillations and poor ride quality.
Recommended = Autotune values
Used to over come motor acoustic noise and instability due to system induced noise as a result of un-
shielded cables or poor shield and ground terminations.
Recommended = 1.0 to 4.0 ms
Used to over come motor acoustic noise and instability due to system induced noise as a result of un-
shielded cables or poor shield and ground terminations.
Recommended = 1 to 2 ms
This is the time taken for the brake to fully open during the start prior to starting the travel.
Recommended = 400 to 500 ms
Brake release high current threshold for open loop operation.
Brake release frequency for open loop operation.
This is the time required for the brake to fully close during the stop prior to disabling the drive.
Recommended = 400 to 500 ms
Brake apply low current threshold for open loop operation
Brake apply frequency for open loop operation
Advanced
Diagnostics Optimization
Parameters
Setting
Setting
CT MODBUS RTU Technical Data
E300 Design Guide
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