Magnetek Elevator Quattro DC - Page 44

Quattro DC Drive A1 Submenu
42
Parameter Description Units Default Range
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TACH FILTER
BW
(Tach Filter Bandwidth)
This parameter
sets the upper limit for a low pass filter for
the tachometer / encoder feedback
signal. Setting this value too low may
cause irregular performance. TACH
FILTER (C1) must be ON for this
parameter to have effect.
rad/sec 100 1 – 100
Y N
TACH RATE
GAIN
(Tach Rate Gain) Used to help reduce
the effects of rope resonance or rope
stretch. It should be adjusted only after
the INERTIA and RESPONSE have been
set correctly.
none 0.0 0.0 – 30.0
Y N
SPD PHASE
MARGIN
(Speed Phase Margin)
This parameter
sets the phase margin of the speed
regulator assuming a pure inertial load.
This parameter is only in affect if SPEED
REG TYPE (C1) is set to PI REG. See
INNER LOOP XOVER (A1) if using ELEV
SPD REG.
degs 80 45 – 90
Y N
RAMPED STOP
TIME
(Ramped Stop Time) This parameter is
used only by the torque ramp down
function during a stop and sets the time
to decrease motor torque from rated
torque to zero. After the elevator comes
to a halt at a landing the brake is applied
and the drive is told to turn off. However,
components of the mechanical brake
must ‘set’ ever so slightly in order to
generate enough torque to hold the car.
This small movement can cause a
significant ‘bump’ if the transfer of torque
occurs too quickly. This effect is
essentially eliminated by the Torque
Ramp Down function.
The Ramped Stop Select function is
enabled at (RAMPED STOP SEL(C1)).
The Ramped Stop Time Parameter
determines the rate of motor torque
decay with ramped stop enabled.
RAMPED STOP TIME(A1) determines
the amount of time it would take for the
drive to ramp from rated torque to zero
torque. The actual time for torque decay
to occur on a typical stop will depend on
the actual amount of torque required to
hold the car.
sec 0.20 0.00 – 2.50
Y N
CONTACT FLT
TIME
(Contactor Fault Time)
Determines
allowable time for motor contactor
feedback to be out of sync with
commanded state before a CONTACTOR
FLT occurs.
sec 0.50 0.10 – 5.00
Y N
BRAKE PICK
TIME
(Brake Pick Time) If BRAKE PICK
CNFM is set to INTERNAL TIME this
parameter sets the internal time the drive
waits until it assumes the brake has been
picked. If BRAKE PICK CNFM is set to
EXTERNAL TB, this parameter sets the
time the drive waits until it receives a
brake pick confirmation or a BRK PICK
FLT will be declared.
sec 1.00 0.00 – 5.00
Y N