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Diagnostics Optimization CT MODBUS RTU Technical Data
Installation and System Design Guide 257
Issue Number: 1
5
Elevator car load measurement:
If Load measurement time (O04) > 0, accumulate Torque Producing Current (J24) and wait for Load measurement time (O04) in ms, then update
Load Measurement Value (O03) and Load Measurement Direction Output (O01). This software function determines the direction of the load and
magnitude of load for rescue, backup operation.
The Elevator car load meaurement can be carried out in either State 5 or State 8 (Profile speed constant) this being determined by Load
measurement time (O04)
If Fast Start Enable (H20) = On (1) wait in this state until the speed and direction signals are provided, or 5 s has elapsed when the travel will be
aborted and exit to State 12 (Apply motor brakes).
If the system was started by applying the Safe Torque Off, Drive enable and Fast Disable (B27) (where used) the speed and direction signals must
be applied within 4 s. After 4 s a Spd / Dir Select trip will be generated
Exit To State 6 (Start profile):
• When Load measurement time (O04) has elapsed.
On Exit To State 6 (Start profile):
• Reset the direction and load measurement accumulator for rescue, backup operation
Exit To State 12 (Apply mechanical brakes):
• If the speed selection is removed.
• If the direction signal is removed (in dual direction input mode).
• If the direction signal has changed (in single and dual direction input modes).
• If the drive trips.
• If the drive is disabled by removing the Safe Torque Off, Drive enable and Fast disable (if used)
• If the control word is enabled (Control Input mode (H11) >= Control Word (6)), and the control word enable bit13 = Off.
• If Fast Start Enable (H20) = On (1) the speed and direction signals were not provided within 5 s.
• If the system was started using Fast start and Fast Start Enable (H20) = Off (0).
Note that a speed and direction signals must be provided in this state to progress to the next state.
6
Start profile:
• Apply the start optimisation speed, jerk and time when Start Optimizer Enable (G45) = On (1)
• Apply the main elevator profile acceleration and deceleration rates.
• If Start Lock Enable (I22) = On (1), disable the position loop ramping the position loop output to 0 smoothly transitioning the load to the speed
control loop.
• If Short Floor Landing Enable (H22) = On (1)
In analog reference mode the analog speed reference is applied with the profile generator enabled,
• If the analog reference starts = 0 the profile which includes Jerks and Acceleration, Deceleration rates are defined bythe Lift controller
• If the start analog reference > 0 the standard profile will be used to reach the analog reference Run Jerk 1 (G13), Acceleration Rate (G11)
Run Jerk 2 (G14)
• When the analog reference speed is reached the profile generator is switched out and the analog reference is followed, see Analog Speed
Reference (G49) for more details.
Exit To State 7 (Profile acceleration):
• When the start optimisation time, Start Optimizer Time (G48) has elapsed the internal start optimiser time is set = 0 bypassing this state.
On Exit To State 7 (Profile acceleration):
• Apply the selected speed, Run Jerk 1 (G13), Run Jerk 2 (G14), Run Jerk 3 (G15) and Run Jerk 4 (G16).
• Apply the analog reference using the profile defined by the Lift controller, or drive where the analog reference start > 0
• Reset the Floor Sensor Correction and Direct To Floor triggers
Exit To State 8 (Profile speed constant):
• If an analog reference mode has been selected in Control Input mode (H11) and the target analog speed reference was > 0 at start and has now
been reached using the drive profile generator setup as defined by Acceleration Rate (G11), Run Jerk 1 (G13) and Run Jerk 2 (G14).
On Exit To State 8 (Profile speed constant):
• Disable the profile generator and use the analog reference from the Lift controller in Analog Speed Reference (G49) directly.
Exit To State 9 (Profile deceleration):
• If the speed selection is removed.
• If the direction signal is removed (in dual direction input mode).
• If the direction signal has changed (in single and dual direction input modes).
• If a Fast stop is recieved
• If a Rapid slowdown is recieved
• If Short Floor Landing Enable (H22) = On (1) move the target distance defined by Short Floor Landing Distance (G30) to Creep speed.
• If Control Input mode (H11) = DCP4 (8) move the distance specified by the Lift controller via DCP4 Remaining Distance Ref (AC03).
Exit To State 12 (Apply mechanical brakes):
• If the drive trips.
• If the drive is disabled by removing the Safe Torque Off, Drive enable and Fast disable (if used)
• If the control word is enabled (Control Input mode (H11) >= Control Word (6)), and the control word enable bit13 = Off.
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