Emerson E300 Series - Page 298

Safety
information
Product
information
Mechanical
installation
Electrical
installation
Getting
started
User Menu A Commissioning
Advanced
Parameters
Diagnostics Optimization CT MODBUS RTU Technical Data
298 E300 Design Guide
Issue Number: 1
When set to Off (0) Peak curve operation is disabled in creep to floor mode, Elevator Control Mode (H19) = Creep To Floor (0). In Direct to floor,
Elevator Control Mode (H19) = Direct To Floor (1), peak curve operation is always active.
When set to On (1) Peak curve operation is enabled in creep to floor mode, Elevator Control Mode (H19) = Creep To Floor (0). In peak curve mode
the stopping distance is controlled regardless of when the signal to stop is given i.e. it is possible to signal a stop during acceleration and the profile
peak speed be automatically adjusted to achieve the required distance to floor. This method of motion profiling gives the additional benefit that the
time taken to reach a given floor is the fastest possible. The distance travelled during a peak curve operation in creep to floor to the creep speed will
be a maximum of Peak Curve Setpoint Distance (G42).
The profile parameters are handled as follows during a stop:
G41 Peak Curve Enable
Mode Open loop, RFC-A, RFC-S
Minimum 0 Maximum
1
Default 0 Units
Type 1 Bit User Save Update Rate Background
Display Format Standard Decimal Places 0
Coding RW, Bit, US
Condition Diagram Description
Stop activated while at
constant speed
If a stop is activated while at constant speed, a normal stop occurs
and the profile parameters are not modified.
Stop activated while at
constant acceleration
If a stop is activated while at constant acceleration, a peak cure
profile is generated where the profile jerk and acceleration are used
as specified but the peak speed is optimized such that the target
distance is reached without overshoot.
Stop activated while in
Jerk 2 or Acceleration
reduction
If a stop is activated while in Jerk 2 or acceleration reduction, a peak
cure profile is generated where the profile jerk, acceleration and peak
speed is optimized such that the target distance is reached without
overshoot.
Time
Time
Stop triggered here
Distance
Controlled
Speed
Creeptofloor D irect to f lo or
Time
Time
Stop triggered here
Distance
Controlled
Speed
Creeptofloor Dire ct to floor
Time
Time
Stop triggered here
Distance
Controlled
Speed
Cr eep to floor Direct to floor