Profiles - MCi iControl User Manual

• Low roll jerk - is used on runs where the car is able to reach High Speed before decelera-
tion must begin. Low Roll Jerk determines how quickly the profile transitions from maxi-
mum to zero acceleration (High Speed) and zero to maximum deceleration. As Low Roll
Jerk increases, the profile transitions more quickly. Lower values provide greater comfort.
Typical values range from a minimum of 4.0 ft/s
• High speed - determines the maximum speed for this profile. For the Standard Profile
this is usually contract speed (ft/min).
• Deceleration - determines the maximum deceleration for this profile. The maximum
value is typically 4.0 ft/s
common values ranging from 2.75 ft/s
Deceleration is usually slightly less than the value of Acceleration (by 0.25 to 0.5).
• Flare jerk - defines the transition from maximum deceleration to near zero Speed or to
Approach Deceleration. As Flare Jerk increases, the profile transitions more quickly from
maximum deceleration to Approach Deceleration. Reduction of this parameter is often
used to reduce the tendency to spot or stall near the end of deceleration, and/or to reduce
any tendency for the deceleration rate, as experienced in the car, to bunch up (increase as
the car approaches the floor). The limiting factor in reducing the value of Flare Jerk is the
inability to fit the profile into the shortest normal one-floor-run.
• Approach deceleration - determines the deceleration rate for the transition from Flare
Jerk to Approach Jerk.
• Approach jerk - defines the transition from approach deceleration to Leveling Speed. As
Approach Jerk increases, the profile transitions more quickly from Approach Deceleration
to Leveling Speed.
• Leveling speed - determines the Speed at which the elevator will level into the floor.
• Leveling distance - determines the stabilized distance the elevator will travel before
arriving at the destination floor.

Profiles

There are eight programmable profiles addressed on the Pattern Screen:
• Standard Profile - used under normal operating conditions. Unless otherwise specified,
suggested profile parameter adjustments are assumed to be referring to Standard Profile
parameters.
• Earthquake Profile - used if an earthquake is sensed by the elevator system during nor-
mal operation (EQI input activated). If you have earthquake operation, you will verify
proper operation during testing.
• Emergency Power Profile - used when the Emergency Power input (EPI) is activated,
indicating a loss of commercial power and that the car is running on generator power.
• Emergency Slowdown Profile - used when the system requires faster than normal
deceleration. 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 down the car. Increasing this parameter will allow higher
deceleration rates to be used for the Emergency Slowdown Profile.
2
and the minimum is usually not less than 2.0 ft/s
2
to 3.75 ft/s
Shaping the Speed Profile
3
to a maximum of 8.0 ft/s
2
(0.838 to 1.143 m/s
3
.
2
with more
2
). The value of
4
4-13