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Closed-loop Drive A1
86
A method of providing the Ramp Down Enable
would be with a logic signal (EXTERNAL TB1)
that is dedicated to that function. The Ramp
Down Enable would be asserted while the Run
command is still present and remain there until
the ramp is completed, after which the Run
command would be removed.
The RUN LOGIC option to trigger the Ramp
Down Enable from the Run command is
provided. In this case, removal of the Run
command enables the Ramp Down Stop
Function.
The time it takes for the HPV 600 to perform its
ramped stop is determined by the Ramped Stop
Time Parameter. The Ramped Stop Time
parameter (RAMPED STOP TIME(A1)) selects
the amount of time it would take for the drive to
ramp from the rated torque to zero torque.
CONTACT FLT TIME
(Contact Fault Time)
When external logic outputs are used to control
the closing of the motor contactor, this
parameter sets the amount of time delay at start
until the drive output is enabled and current
flows. And when external logic inputs are used
to confirm the closing of the motor contactor, this
parameter sets the time allowed for the
contactor’s auxiliary contacts to reach the user
commanded state before a CONTACTOR FLT
occurs.
BRAKE PICK TIME
(Brake Pick Time)
If the brake pick fault is enabled, this parameter
sets the time allowed for the brake pick
feedback not to match the brake pick command
before a BRK PICK FLT occurs.
BRAKE HOLD TIME
(Brake Hold Time)
If the brake hold fault is enabled, this parameter
sets the time allowed for the brake hold
feedback not match the brake hold command
before a BRK HOLD FLT occurs.
OVERSPEED LEVEL
(Overspeed Level)
This parameter sets the percentage of rated
speed the drive uses (in conjunction with
OVERSPEED TIME, below) to determine when
an OVERSPEED fault occurs.
OVERSPEED TIME
(Overspeed Time)
This parameter sets the time that the drive can
be at or above the OVERSPEED LEVEL (A1),
before the drive declares an OVERSPEED FLT.
OVERSPEED MULT
(Over Speed Multiplier)
This parameter sets the percentage of contract
speed for the OVERSPEED TEST (U4).
ENCODER PULSES
(Encoder Pulses)
This parameter sets the pulses per revolution
(before the x4 logic) the drive receives from the
encoder.
SPD DEV LO LEVEL
(Speed Deviation Low Level)
This parameter defines a range around the
speed reference. When the speed feedback is
within this range (in conjunction with SPD DEV
TIME (A1)) the drive will set the SPEED DEV LO
logic output. The Speed Deviation Low function
indicates that the speed feedback is tracking the
speed reference within a defined range for a
defined period of time. The Speed Deviation
Low function has the ability to set a configurable
logic output. The logic output will be true, when
the speed feedback is tracking the speed
reference within a defined range around the
speed reference for a defined period of time.
The defined range is determined by the Speed
Deviation Low Level parameter (SPD DEV LO
LEVEL(A1)) and the defined time is determined
by the Speed Deviation Time parameter (SPD
DEV TIME).
Speed Deviation Low
Speed Reference
Speed Feedback
Содержание HPV 600
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