Open-loop Drive A1
47
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).
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.
CONT DWELL TIME
(Contact Dwell Time)
When external logic outputs are used to control
the closing of the motor contactor, this
parameter sets the amount of time delay from
disabling the drive outputs following a stop until
the motor contactor opens. And when external
logic inputs are used to confirm the closing of
the motor contactor, this parameter extends 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.
BRAKE PICK DELAY
(Brake Pick Delay)
When external logic outputs are used to control
the mechanical brake, this is the time delay from
a drive run command until the brake is picked.
This time delay needs to be set for the following:
have DC injection current before the mechanical
brake is picked and have DC injection current
after the mechanical brake is picked to allow the
brake to fully open.
BRAKE DROP DELAY
(Brake Drop Delay)
When external logic outputs are used to control
the mechanical brake and ramp to stop is
selected, this parameter sets the time delay to
set the brake after decelerating to the DC Stop
Freq. This time delay needs to be set for the
following: have DC injection current before the
mechanical brake is closed and have DC
injection current after the mechanical brake is
closed to allow the brake to fully close.
DC START LEVEL
(DC Injection Current Start Level)
The level of DC injection current at start as a
percent of motor rated current. The DC injection
current will hold the motor shaft in a fixed
position as the drive outputs a DC current to the
motor. At the start, it is important to have DC
injection current before the mechanical brake is
picked and to have DC injection current after the
mechanical brake is picked to allow the brake to
fully open.
DC STOP LEVEL
(DC Injection Current Stop Level)
The level of DC injection current at stop as a
percent of motor rated current. To hold the
motor shaft in a fixed position the drive will
output a DC current to the motor. At the stop, it
is important to have DC injection current before
the mechanical brake is closed and to have DC
injection current after the mechanical brake is
closed to allow the brake to fully close.
DC STOP FREQ
(DC Injection Stopping Frequency)
The frequency at which DC injection begins to
occur when the drive is decelerating to a stop.
If ramp to stop is selected and the run command
is removed, the drive decelerates from it’s
current speed to the DC stop frequency and
then DC injection is applied.