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Safety
Product
Mechanical
information
information
installation
Figure 7-4 Creep to floor profile, Timing diagram
Speed selection
Creep Speed
Direction
STO, Drive enable
FAST disable
Drive active
Start lock
Brake output
7.6
Direct to floor profile
For some applications, especially high-speed elevators and long travel distance elevators, direct-to-floor positioning control is often used to overcome
inherent delays associated with creep-to-floor elevators.
Direct-to-floor positioning alone should only be used on elevators up to 1 m/s due to the accuracy and sampling of the E300 Advanced Elevator drive,
above 1 m/s floor sensor correction should be enabled in addition.
The acceleration rate and all jerk rates of the velocity profile are independently adjustable, enabling the performance of Direct to floor operation to be
optimized. The relevant parameters are as shown in Figure 7-5.
The deceleration profile in Direct to floor operation is applied according to the slowing distance to the selected floor level. The elevator controller
instructs the drive to slow, either by applying a stop signal to digital input 4, or by deselecting the speed signals. This takes place at a distance from
the selected floor level, which matches the slowing distance achievable with the required deceleration rate from the selected speed. On detecting the
stop signal the drive decelerates directly under position control into the floor level. Creep speed positioning is not executed nor required.
The E300 Advanced Elevator drive calculates the deceleration distance for each of the speed references taking into account the profile settings.
Alternatively the user may specify a distance for each speed. The relevant parameters are shown in Table
Deceleration Distance Measured (J44).
NOTE
If either the slowing signal is given too close to the selected floor level, or the user deceleration distance is too short for the selected speed, it is
possible that the car will stop too late and hence overshoot the floor level.
Figure 7-5 Velocity profile with Direct to floor positioning
Run Jerk 1 (
Speed signals
Stop signal**
Level sensor
** Only if direct-to-floor positioning with stop signal
160
Electrical
Getting
User Menu A
installation
started
V2 Speed Reference (
V3
Speed Reference
V3
Speed Reference
Run Jerk 2 (
G14
)
Acceleration Rate
(
G11
)
Run Jerk 1 (
G13
)
Torque producing current
Control terminal 7 (V2), 26 (V3), 5 (V4)
Control terminal 29
Control terminal 28
Control terminal 31
Control terminal 26
Drive active, L06
Start lock position Kp, 120
Control terminal 25
Operational speeds
(
G01
Run Jerk 2 (
G14
)
Acceleration
Rate (
G11
)
G13
)
Deceleration Distance
Calculated (
Advanced
Commissioning
Diagnostics Optimization CT MODBUS RTU Technical Data
Parameters
Brake Control Apply Delay (
D05
)
G02
)
(
G03
)
(
G04
)
Run Jerk 3 (
G15
)
Deceleration Rate
(
G12
)
Creep Stop
Deceleration Rate (
Run Jerk 4 (
G16
)
V1 Creep Speed Reference (
Creep Stop Jerk (
to
G10
)
Run Jerk 3 (
Deceleration Rate (
J43
)
G17
)
G01
)
G18
)
7-12.
The actual distance is displayed in
G15
)
G12
)
Run Jerk 4 (
G16
)
E300 Design Guide
Issue Number: 1
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