Closed-loop Drive A1
84
A1
parameter
description
default
units
min
max
hidden
item
run
lock
out
NOTCH FILT DEPTH
Notch filter maximum
attenuation
0 % 0
100 Y Y
MSPD DELAY 1-4
Determines the
recognition time delay
for a defined multi-
step speed command
0.000 seconds
0.000
10.000 Y
Y
Detailed descriptions
CONTRACT CAR SPD
(Contract Car Speed)
This parameter programs the elevator contract
speed in feet per minute (fpm) or meters per
second (m/s).
CONTRACT MTR SPD
(Contract Motor Speed)
This parameter programs the motor speed at
elevator contract speed in revolutions per minute
(rpm).
RESPONSE
(Response)
This parameter sets the sensitivity of the drive’s
speed regulator in terms of the speed regulator
bandwidth in radians. The responsiveness of
the drive as it follows the speed reference will
increase as this number increases. If the
number is too large, the motor current and
speed will become jittery. If this number is too
small, the motor will become sluggish.
INERTIA
(System Inertia)
This parameter sets the equivalent of the system
inertia in terms of the time it takes the elevator to
accelerate to motor base speed at rated torque.
INNER LOOP XOVER
(Inner Loop Cross Over)
This parameter sets the inner speed loop cross
over frequency. This parameter is only used by
the Elevator Speed Regulator (Ereg).
GAIN REDUCE MULT
(Gain Reduce Multiplier)
This parameter is the percent of ‘response’ the
speed regulator should use in the ‘low gain’
mode. This value reduces the RESPONSE
value when the drive is in ‘low gain’ mode. (i.e.
setting this parameter to 100% equals no
reduction in gain in the ‘low gain’ mode)
GAIN CHNG LEVEL
(Gain Change Level )
When the gain control is set to internal, the drive
will control the high/low gain switch. This
parameter sets the speed reference level, when
the drive is in ‘low gain’ mode.
The speed regulator high / low gain function was
developed in response to high performance
elevator requirements where the resonant
nature of the elevator system interferes with the
speed response of the drive.
When the speed response (gain) is set to high
levels, the resonant characteristics created by
the spring action of the elevator ropes can cause
car vibration. To solve this problem, the speed
regulator is set to a low enough response (gain)
so that the resonant characteristics of the ropes
are not excited.
This is accomplished by controlling the
sensitivity or response of the speed regulator via
the high / low gain switch and gain reduce
multiplier.
By using the gain reduce multiplier, the user can
specify a lower response (gain) for the speed
regulator when the drive is at higher speeds.
The gain reduce multiplier (GAIN REDUCE
MULT(A1)) tells the software how much lower,
as a percentage, the speed regulator response
(gain) should be.
The high / low gain switch determines when the
HPV 600 is in ‘low gain’ mode. In the ‘low gain’
mode, the gain reduce multiplier has an effect
on the speed regulator’s response (gain).
The drive allows for the high / low gain switch to
be controlled either externally or internally. The
high / low gain source parameter (HI/LO GAIN
SRC) allows for this external or internal
selection.