TOSHIBA- 55
TX Series 48 - 1250A
SP.12 System Setpoints (Setpoint Page 12)
(Security Level: 3)
SP12.1 Default Display Screen: This setpoint group
allows the user to choose the default screen the
TX displays while the motor is running. Select
the metering page number (1-3), then select the
metering screen number. The range varies
depending on the selected page. To display a
default screen, program the following two
setpoints:
• Metering Data Page#: Range is Page 1 - 3.
• Metering Data Screen#: If Page 1 is selected
as the default page, then Screens 1- 10 are
available. If Page 2 Screens 1-29 are available.
If Page 3 is selected then Screens 1-6 are
available. (See Metering Menu, MP.1, for screen
number assignment.)
SP12.2 Alarms: Configures the RTD failure alarm
(when RTD option is included) and the thermal
register alarm.
• RTD Failure Alarm: If enabled, and an RTD
shorts or open, an alarm occurs. (Only if RTD
option is installed).
• Thermal Register Alarm: Sets a level in the
thermal register to generate an alarm when the
Thermal Register Capacity Used has exceeded
this level.
• Thermal Alarm Delay: The amount of time
that the Thermal Register Used must exceed
the setpoint before an alarm condition will occur.
SP12.3 Thermal Register Setup Information: This
setpoint group will configure the thermal register
and indicate to the TX which inputs to use when
thermal modeling.
• Cold Stall Time: Enter the time from the motor
manufacturer’s specification sheet or use the
time defined by the OL Class. This setpoint is
used to define the thermal capacity of the motor.
• Hot Stall Time: Enter the amount of time
specified by the motor manufacturer or use half
of the time defined by the OL Class.
• Stopped Cool Down Time: The time the
motor requires to cool down after it has stopped.
Use only the data provided by the motor
manufacturer. This setpoint is used to configure
the cooling rate of the thermal register.
• Running Cool Down Time: The amount of
time the motor requires for cooling down while
running. Use only the data provided by the motor
manufacturer.
• Relay Measured Cool Rates: When the RTD
option is supplied, the TX can be configured to
use the measured cool rates from the RTDs
instead of the programmed settings. This
setpoint should only be enabled when the RTD
option is present.
• Thermal Register Minimum: Sets the value in
the thermal register which represents a motor
running at the nameplate current (with no
overheating or negative sequence currents
present).
• Motor Design Ambient Temperature: Use
the data from the motor manufacturer’s
specifications. When RTD option is supplied,
this setpoint will be the base point for the RTD
biasing of the Thermal Register.
• Motor Design Run Temperature: Use the
data from the motor manufacturer’s
specifications. This setpoint defines the
operating temperature rise of the motor at full
load amps or 100% load.
• Motor Stator Max Temperature: This
represents the maximum temperature the stator
insulation will withstand. The user may choose
to use the temperature setting of the insulation
class (selected in Setpoint Page 1) or enter a
specific maximum temperature. This value
should not exceed the stator’s insulation
temperature. This maximum temperature
represents 100% thermal capacity.
• I/B Input to Thermal Register: When enabled
it allows the TX to use the line current
imbalance information to bias the Thermal
Register.
• User Calculated K or Assign: When the
setpoint is set to ON the TX will calculate the k
constant factor for biasing the thermal register, or
the user may choose to assign the k value.
SP12.4 Press Enter to CLR Thermal Register: Allows
the level three password user to clear the
thermal register for emergency restarts.
