Toshiba 48-1250 A 用户手册
TOSHIBA- 35
TX Series
48 - 1250A
SP.2 Starter Configuration (Setpoint Page 2)
Provides multiple choices for starting ramps that can be
selected for particular loads and applications.
selected for particular loads and applications.
SP2.1
Start Control Mode: Dual Ramp, Custom
Accel Curve, Tach Ramp, Jog Voltage, Start
Ramp 1, Start Ramp 2.
Accel Curve, Tach Ramp, Jog Voltage, Start
Ramp 1, Start Ramp 2.
• Dual Ramp: The dual ramp mode works in
conjunction with External Input #3. This allows
the user to switch between the two start ramps
without having to reconfigure the start mode.
(For details on configuring External Input #3 for
DUAL RAMP see Setpoint Page 6.)
the user to switch between the two start ramps
without having to reconfigure the start mode.
(For details on configuring External Input #3 for
DUAL RAMP see Setpoint Page 6.)
• Custom Accel Curve: Allows the user to
custom design the acceleration start curve to
the application. (See setpoint page 7 for
configuration setup.) Note: If Custom Accel
Curve has not been enabled in setpoint page 7,
the TX will ignore the start control mode and
read this setpoint as disabled.
the application. (See setpoint page 7 for
configuration setup.) Note: If Custom Accel
Curve has not been enabled in setpoint page 7,
the TX will ignore the start control mode and
read this setpoint as disabled.
• Tach Ramp: See setpoint page 6 for
configuration setup of tachometer input.
(Pending)
(Pending)
SP2.2
Jog Voltage: The voltage level necessary to
cause the motor to slowly rotate.
cause the motor to slowly rotate.
SP2.3
Start Ramp 1 Type: The ramp type can be
setup for either Voltage or Current. If Voltage is
selected, initial voltage, ramp time and current
limit are adjustable. If Current is selected, initial
current, ramp time and maximum current are
adjustable.
Start Ramp 1 Type: Voltage
setup for either Voltage or Current. If Voltage is
selected, initial voltage, ramp time and current
limit are adjustable. If Current is selected, initial
current, ramp time and maximum current are
adjustable.
Start Ramp 1 Type: Voltage
• Voltage Ramping is the
most reliable starting
method, because the
starter will eventually
reach an output voltage
high enough to draw full
current and develop full
torque. This method is
useful for applications
where the load
conditions change
frequently and where
different levels of torque
are required. Typical applications include
material handling conveyors, positive
displacement pumps and drum mixers.
Voltage is increased from a starting point (Initial
Torque) to full voltage over an adjustable period
of time (Ramp Time). To achieve Voltage
Ramping, select VOLTAGE for the START RAMP
#1 TYPE setpoint and set CURRENT LIMIT #1
setpoint to 600% (the maximum setting). Since
method, because the
starter will eventually
reach an output voltage
high enough to draw full
current and develop full
torque. This method is
useful for applications
where the load
conditions change
frequently and where
different levels of torque
are required. Typical applications include
material handling conveyors, positive
displacement pumps and drum mixers.
Voltage is increased from a starting point (Initial
Torque) to full voltage over an adjustable period
of time (Ramp Time). To achieve Voltage
Ramping, select VOLTAGE for the START RAMP
#1 TYPE setpoint and set CURRENT LIMIT #1
setpoint to 600% (the maximum setting). Since
this is essentially Locked Rotor Current on most
motors, there is little or no Current Limit effect on
the Ramp profile.
motors, there is little or no Current Limit effect on
the Ramp profile.
• Voltage Ramping with Current Limit is the most
used curve and is similar to voltage ramping.
However, it adds an adjustable maximum current
output. Voltage is increased gradually until the
setting of the Maximum Current Limit setpoint is
reached. The voltage is held at this level until
the motor accelerates to full speed. This may
be necessary in applications where the
electrical power is limited. Typical applications
include portable or emergency generator
supplies, utility power near the end of a
transmission line and utility starting power
demand restrictions. Note: Using Current Limit
will override the Ramp Time setting if necessary,
so use this feature when acceleration time is
not critical. To achieve Voltage Ramping with
Current Limit, select VOLTAGE for the START
RAMP #1 setpoint and set CURRENT LIMIT #1
setpoint to a desired lower setting, as
determined by your application requirements.
However, it adds an adjustable maximum current
output. Voltage is increased gradually until the
setting of the Maximum Current Limit setpoint is
reached. The voltage is held at this level until
the motor accelerates to full speed. This may
be necessary in applications where the
electrical power is limited. Typical applications
include portable or emergency generator
supplies, utility power near the end of a
transmission line and utility starting power
demand restrictions. Note: Using Current Limit
will override the Ramp Time setting if necessary,
so use this feature when acceleration time is
not critical. To achieve Voltage Ramping with
Current Limit, select VOLTAGE for the START
RAMP #1 setpoint and set CURRENT LIMIT #1
setpoint to a desired lower setting, as
determined by your application requirements.
Start Ramp 1 Type: Current
Current Ramping (Closed Loop Torque
Ramping) is used for smooth linear acceleration
of output torque. Output voltage is constantly
updated to provide the linear current ramp, and
therefore the available torque is maximized at
any given speed. This is for applications where
rapid changes in torque may result in load
damage or equipment changes. Typical
applications include overland conveyors if belt
stretching occurs; fans and mixers if blade
warping is a problem; and material handling
systems if stacked products fall over or break.
Current Ramping (Closed Loop Torque
Ramping) is used for smooth linear acceleration
of output torque. Output voltage is constantly
updated to provide the linear current ramp, and
therefore the available torque is maximized at
any given speed. This is for applications where
rapid changes in torque may result in load
damage or equipment changes. Typical
applications include overland conveyors if belt
stretching occurs; fans and mixers if blade
warping is a problem; and material handling
systems if stacked products fall over or break.
This feature can be used with or without the
Maximum Current Limit setting. To achieve
Current Ramping select CURRENT for START
RAMP #1 TYPE setpoint and the MAXIMUM
CURRENT #1 setpoint to the desired level.
Current Ramping select CURRENT for START
RAMP #1 TYPE setpoint and the MAXIMUM
CURRENT #1 setpoint to the desired level.
Current Limit Only: (Current Step) start uses
the Current Limit feature exclusively. This
method of starting eliminates the soft start
voltage/current ramp and instead, maximizes
the effective application of motor torque within
the limits of the motor. In this mode, setpoint
RAMP TIME #1 is set to zero (0), so the output
current jumps to the current limit setting
immediately. Typically used in with a limited
power supply, when starting a difficult load such
as a centrifuge or deep well pump, when the
motor capacity is barely adequate (stall
condition or overloading occurs) or if other
starting modes fail. Since ramp times are set to
zero (0). START RAMP #1 TYPE is set to
the Current Limit feature exclusively. This
method of starting eliminates the soft start
voltage/current ramp and instead, maximizes
the effective application of motor torque within
the limits of the motor. In this mode, setpoint
RAMP TIME #1 is set to zero (0), so the output
current jumps to the current limit setting
immediately. Typically used in with a limited
power supply, when starting a difficult load such
as a centrifuge or deep well pump, when the
motor capacity is barely adequate (stall
condition or overloading occurs) or if other
starting modes fail. Since ramp times are set to
zero (0). START RAMP #1 TYPE is set to