Magnetek Elevator Quattro DC - Page 45

Quattro DC Drive A1 Submenu
43
Parameter Description Units Default Range
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BRAKE HOLD
TIME
(Brake Hold Time)
Determines the time
the drive will wait until a BRK HOLD FLT
is declared if a logic input is set to MECH
BRK HOLD
sec 0.50 0.00 – 5.00
Y N
OVERSPEED
LEVEL
(Over speed Level)
Sets the percentage
of rated speed the drive uses (in
conjunction with OVERSPEED TIME,
below) to determine when an
OVERSPEED fault occurs. Units in
percent of contract speed
% 115.0 90.0 – 150.0
Y N
OVERSPEED
TIME
(Over speed Time) Sets the time that the
drive can be at or above the
OVERSPEED LEVEL (A1), before the
drive declares an OVERSPEED FLT.
sec 0.10 0.00 – 9.99
Y N
OVERSPEED
MULT
(Over Speed Multiplier)
Sets the
percentage of CONTRACT CAR SPD (A1
)
for the OVERSPEED TEST (U4).
% 125.0 100.0 – 150.0
Y N
ENCODER
PULSES
(Encoder Pulses per Revolution, PPR)
T
his parameter sets the pulses per
revolution (per channel) the drive
receives from the encoder. Set this value
to agree with the pulses per revolution on
the encoder nameplate if the tachometer
is directly coupled to the motor shaft. If
tachometer connected to rider roll to
measure linear velocity, then this should
be a calculated value equal to the counts
expected from the encoder when the
motor makes exactly one revolution.
Please note, ENC RATIO MULT and
ENCODER PULSES must satisfy:
70032,
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mult
ratio
enc
pulses
encoder
PPR 5000 600 – 20000
N Y
ENC RATIO
MULT
(Encoder to Motor Ratio Multiplier)
This
parameter is the ratio of encoder RPM to
motor RPM. If friction wheel is utilized for
the encoder, the motor sheave diameter
divided by the tach wheel diameter
should be entered here. This value will
be multiplied to the encoder pulses per
revolution within the drive to obtain
proper motor rpm speed feedback
information for regulation. If the encoder
is directly coupled to the motor shaft, this
parameter should be set to 1.000.
Please note, ENC RATIO MULT and
ENCODER PULSES must satisfy:
70032,
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mult
ratio
enc
pulses
encoder
none 1.000 0.001 – 32.000
N Y
SPD DEV LO
LEVEL
(Speed Deviation Lo Level) Range
around the speed reference for speed
deviation low logic output. Units are in
percent of contract speed. See SPD
DEV LO LEVEL and SPD DEV HI LEVEL
on page 49.
% 10.0 0.1 – 20.0
Y N