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AGy -L 75
This signal is available as default on terminal 16, Digital output 1.
[52] Contactor UP TRUE when the Run contactor for upward motion has to be closed.
[53] Contactor DOWN TRUE when the Run contactor for downward motion has to be closed.
[54] Brake cont TRUE when the mechanical brake has to be released.
[55] Lift start TRUE when the inverter output bridge is operating and no DC injection is being operated.
7.2.2 Speed indication
At power-on the drive keypad shows the speed of the lift car (parameter d.007), expressed in mm/s. Likewise, all the
variables related to the speed of the motor (d.008, d.302) are expressed in mm/s. The conversion between electrical Hz
and car speed is automatically performed by the drive, as explained in the following chapter. The conversion ratio can also
be overwritten by the user, by setting parameter P.600.
The parameter to be shown at power-on can be configured by setting the parameter P.580.
7.3 Ramp Function
Four independent jerks are available for each profile, together with linear acceleration and deceleration times. All profile
parameters are expressed in terms of car linear quantities. The equivalence between car speed v(m/s) and inverter output
frequency f(Hz) is automatically performed by the drive, based on the value of the following parameters:
-f
b
: S.101 Base frequency (Hz)
-v
N
: S.180 Car max speed (m/s)
The ramp profile is shown in Fig.6. Profile number 1 has been used as an example, but the same applies to all the four
available profiles. The increase or decrease of the jerk values causes the increase or decrease of the running comfort.
Motor speed
d.007 Output speed
Acceleration
S.230 Jerk acc ini 1
S.231 Acceleration 1
S.232 Jerk acc end 1
S.233 Jerk dec ini 1 S.235 Jerk dec end 1
S.234 Deceleration 1
Fig.7.4 – Lift ramp profile
7.3.1 Space calculation and acceleration / deceleration ramps settings
The space covered by the lift car during acceleration and deceleration ramps can be calculated off-line by the drive, by
executing the command: C.060 Calculate space . The results of the calculation can be monitored into the parameters:
d.500 Lift space space covered by the lift car (expressed in meters) when accelerating from zero to the
maximum speed (defined by S.180) and then immediately decelerating back to zero(one
floor travel)
d.501 Lift accel space space covered by the lift car (expressed in meters) when accelerating from zero to the
maximum speed (defined by S.180).
d.502 Lift decel space pace covered by the lift car (expressed in meters) when decelerating from the maximum
speed (defined by S.180) to zero.
Knowing the space needed to accelerate and decelerate the lift car with the ramp set in use, is useful to determine whether
the ramps are compatible with the position of the floor sensors before actually starting the drive. For example, if the
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