Shaping the Speed Profile
4-19
4
iControl DC
Profiles
There are eight programmable profiles addressed on the Pattern Screen:
• Standard - used under normal operating conditions. Unless otherwise specified, sug-
gested profile parameter adjustments are assumed to refer to Standard profile parameters.
• Earthquake - used if an earthquake is detected by the elevator system during normal
operation (EQI input activated). If you have earthquake operation, you will verify proper
operation during testing.
• Emergency power - used when the Emergency power input (EPI) is activated, indicat-
ing a loss of commercial power and that the car is running on generator power.
• Emergency slowdown - used when the system requires faster than normal decelera-
tion. It is used in response to situations such as the normal terminal stopping device being
activated or loss of the quadrature signal (positioning signal). Note that the Emergency
rate limited stop parameter (Configuration > Drive > General tab) will limit how fast this
profile can slow the car down. Increasing this parameter will allow higher deceleration
rates to be used for the Emergency Slowdown Profile.
• Correction - used when the system is not confident of the car position in the hoistway.
The car proceeds to a known position using the Correction profile parameters in order to
synchronize its position information.
• Inspection - used when the system is placed on Inspection/Access operation. The
Inspection profile is also used when the system is learning the building floor heights.
• Alternate 1 - used when the Alternate Speed Profile One input (ASP1) is activated.
• Alternate 2 - used when the Alternate Speed Profile Two input (ASP2) is activated.
Setting Pattern Parameters
By viewing the commanded pattern and car speed feedback on the iView Virtual Oscilloscope as
the car is running, any discontinuity in the idealized speed profile can be observed.
• On the iView Virtual Oscilloscope:
•Set Test point1= Pattern (Command)
•Set Test point 2 = Speed Feedback
Unless otherwise specified, suggested parameter adjustments are assumed to be referring to
Standard profile parameters.
• Initial Values for Pattern Parameters - Pattern shape preset can be used to enter
preset values for the Standard profile parameters based on the high speed (contract speed)
of the elevator and the selected shape type (Slow, Moderate or Fast). This provides an
excellent starting point. Please refer to “Pattern shape preset” on page 9-158.
• Contract Speed Overshoot and Current Limiting -To prevent contract speed over-
shoot and/or current limiting from the drive, the Acceleration and Low roll jerk parame-
ters can be reduced. The Low roll jerk rate has a slightly greater effect on overshoot at high
speed than does Acceleration. The Acceleration parameter has the most effect on current
limiting. Observe actual car response on iBox test point STP2 and GND (with the Test
point 2 parameter set to Speed Feedback) to verify that there is no overshoot.
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