Toshiba VF010H05 - Manual (Page 74)

JKSSS+ Series - 68
JKSSS+ Series 2.3 - 4.2KV
• 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 RTDs are used, 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.
• U/B Input to Thermal Register: Always enabled.
It allows the soft starter 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 controller 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.
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
soft starter 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 and the
thermal register alarm.
• RTD Failure Alarm: If enabled, and an RTD
shorts or open, an alarm occurs.
• 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 soft starter 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 RTDs are
used, the soft starter can be configured to use the
measured cool rates from the RTDs instead of the
programmed settings. This setpoint should only be
enabled when RTDs are present.