Open-loop Drive A1
49
TORQ BOOST TIME
(Torque Boost Time Constant)
This parameter is the torque boost filter time
constant. Adjusted for torque compensation
response and stability. Increasing the value of
the parameter, decreases response. Reducing
the parameter to a lower value increases
response.
NOTE: it is usually best to leave this parameter
set at the default of 0.5 seconds.
Torque compensation automatically boosts the
drive’s output voltage, in excess of the
programmed V/Hz pattern, as the load demand
increases. Torque compensation counters the
voltage drop in the motor stator resistance. This
function has the greatest effect at low speeds
improving load response. When using torque
compensation, a valid value must be entered for
the motor’s no-load current (% NO LOAD
CURR(A5))
TORQ BOOST GAIN
(Torque Boost Gain)
This gain controls the differential term in the
voltage boost function. This effects the rate of
response of the torque boost. Setting the
Torque Boost Gain to 0.00 disables the torque
boost function.
NOTE: this function is defaulted off (TORQ
BOOSTGAIN=0.0). If adjustments need to be
made follow the guidelines listed in the
“Performance Adjustments” on page 11.
Torque compensation automatically boosts the
drive’s output voltage, in excess of the
programmed V/Hz pattern, as the load demand
increases. Torque compensation counters the
voltage drop in the motor stator resistance. This
function has the greatest effect at low speeds
improving load response. When using torque
compensation, a valid value must be entered for
the motor’s no-load current (% NO LOAD
CURR(A5))
SPD COMMAND BIAS
(Speed Command Bias)
This parameter subtracts an effective voltage to
the actual analog speed command voltage
signal.
uses
software
drive
signal
MULT
COMMAND
SPD
BIAS
COMMAND
SPD
voltage
input
channel#1
analog
=
×
−
SPD COMMAND MULT
(Speed Command Multiplier)
This parameter scales the analog speed
command.
uses
software
drive
signal
MULT
COMMAND
SPD
BIAS
COMMAND
SPD
voltage
input
channel#1
analog
=
×
−
MAINS DIP SPEED
(Mains Dip Speed Multiplier)
This parameter sets the percentage of contract
speed for the speed to be reduced when the
drive goes into ‘low voltage’ mode. The Mains
Dip function is enabled by the Mains Dip Enable
(MAINS DIP ENA(C1)) parameter. When the
drive goes into ‘low voltage’ mode, it reduces the
speed by the percentage defined by this
parameter. ‘Low voltage’ mode is defined as
when the drive declares a UV alarm, which is
defined by the Input line-to-line voltage (INPUT
L-L VOLTS(A4)) parameter and the
Undervoltage Alarm Level (UV ALARM
LEVEL(A4)).
ZERO SPEED LEVEL
(Zero Speed Level)
This parameter sets the threshold for zero speed
detection. This is only used to generate the zero
speed logic output.
Note: if DIR CONFIRM (C1) is enabled, this
parameter also sets the threshold for the
termination of the test to confirm the polarity of
the analog speed command.
ZERO SPEED TIME
(Zero Speed Time)
This parameter sets the time at which the drive
is at the ZERO SPEED LEVEL (A1) before zero
speed logic output is true.
UP/DWN THRESHOLD
(Directional Threshold)
This parameter sets the threshold for the
direction sense logic outputs. If speed feedback
does not reach this level, the drive will not detect
a directional change. This is only used to
generate the direction sense logic outputs (car
going up and car going down).
Содержание HPV 600
Страница 1: ...HPV 600 AC Elevator Drive Technical Manual...
Страница 162: ......
Страница 163: ......