Here, you can define the starting
behaviour of the elevator via these parameters
AR |
Total
duration of start operation until the transition of the acceleration ramp |
VA |
Starting
speed |
AR-Type |
You
can choose between a static and dynamic starting behaviour static
(0) The
set value acceleration ramp does not start before the time AR has elapsed dynamic
(1) As
soon as the actual speed has exceeded a minimum threshold (VA/2), the set
value acceleration ramp starts |
By selecting adequate starting
parameters, you can reach a "soft" starting behaviour. The elevator
will start smoothly and without any jerking.
If the drive command (3) is
cancelled during the acceleration ramp, a floor-to-floor travel operation is
initiated. The shape of this floor-to-floor travel operation, however, can only
be influenced significantly using the parameters SC and R-SC if the drive
command is canceled early, so that there is a sufficient distance available for
the required shape of the curve. If the travel command is canceled a short time
before the final speed is reached, the shape of the curve cannot be varied.
(1) |
High
values for SC result in high speeds and correspondingly short travel times. |
(2) |
Low
values for SC result in low speeds and correspondingly long travel times. |
With R_SC the rounding of the curve
can be set:
R_SC = 0: no rounding
R_SC = 1000: maximum rounding
As a standard, high speed V4 is used as the
basis for the set value ramps. That means, HL and B relate to this speed. If
acceleration is to be done to another speed, e.g. V2, the calculation of the
acceleration time is done such that the acceleration is the same as in the case
of acceleration to V4. As a result the ramp times are shorter by the factor of
the selected speed divided by V4. In the case of speed transitions with a small
difference this means that small ramp times with small roundings are generated,
which can result in an uncomfortable driving behaviour.
Using the
following parameters, this calculation based on the constant acceleration can
be avoided, and the required sections of the travel
curve can be set individually.
Activation is done by entering values greater than 500 msec, smaller values
are automatically set to 0 and ignored by the travel curve calculator.
T
V4 -> Vz |
With
this parameter, the transition time (independent of the speed difference) can
be set from V4 to one of the intermediate speeds V3 or V2. |
HL-V3 |
Acceleration
ramp for intermediate speed V3. |
B-V3 |
Deceleration
ramp for intermediate speed V3. |
HL-V2 |
Acceleration
ramp for intermediate speed V2. |
B-V2 |
Deceleration
ramp for intermediate speed V2. |
If a reference signal is available
and is to be evaluated, the distance of the reference signal to the flush
landing level must be entered here.
Activation of reference function:
By setting parameter S_REF to values
> 0, the function is activated.
The required system data
(transmission, pulley diameter and suspension) must be entered correctly.
The reference function is only
possible for speeds V3 and V4!
Terminal Functionality:
If the function is activated, the V0
terminal is used for connection of the reference signal. For this reason, speed
V0 is not used in this case. Note that some control systems (wrongly) use V0
for inspection travel operations - this is no longer possible if the reference
function is activated. In this case V1 must be used.
Reference signal of elevator
control:
When the zone reached, the reference
signal must be switched to +24 V and remain on High until the end of the travel
operation.
For more details, please refer to
the VVVF controller manual.
Version 002
/ Date: 17.09.2007