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Basic Installation and Operation
Guide
SP.6 User I/O Configuration (Setpoint Page 6) - Continued
(Security Level 2)
The soft starter can be configured to accept a tachometer feedback signal using the 4-20mA input.
SP6.1 The first screen of Setpoint page 6 is TACHOMETER SCALE SELECTION. When this is set to ENABLED,
the user will need to input the tachometer scale of the 4-20mA input range.
• Manual Tach Scale 4.0 mA: The unit is looking for an RPM value to assign to the lowest point on the scale. This
Value should represent the motor at zero speed.
• Manual Tach Scale 20.0 mA: The unit is looking for an RPM value to assign to the highest point on the scale. This
value should represent the motor at full speed.
SP6.2 Tach Accel Trip Mode Select: When enabled, the underspeed or overspeed must be selected for the Tach
Accel Trip. If underspeed is selected, only the Tach Underspeed Trip Point will be used. If overspeed is selected,
only the Tach Overspeed Trip Point will be used.
• Tach Ramp Time: This is the duration of time before the starter begins sampling the tachometer.
• Tach Underspeed Trip: Defines the minimum motor speed using the Tach feedback. When the underspeed trip
mode is enabled and the motor speed falls below this level for the time specified by the Tach Accel Trip Delay, an
underspeed trip occurs.
• Tach Overspeed Trip: Defines the maximum allowed motor speed using the Tach feedback. When the overspeed
trip mode is enabled and the motor speed exceeds this level for the time specified by the Tach Accel Trip Delay,
an overspeed trip occurs.
• Tach Accel Trip Delay: The duration of time that the Tach Accel trip condition must persist before a trip is
generated.
SP6.3 The controller provides two 4-20mA analog outputs. Each analog output is independent of the other and can be
assigned to monitor different functions. The available output ranges are RPM, Hottest Non-Stator (Bearing) RTD,
Hottest Stator RTD, RMS current, and % of Motor Load.
• Analog Output #1 – Select a function from the available five options to be transmitted from the 4-20mA output.
Note: If selecting RPM, the Tachometer feedback input signal must be present in order for the controller to
give proper output. If selecting RTD, an RTD input signal must be present for a proper output to be given
from the analog output.
• Analog Output #1 (4 mA): Enter a value that the 4mA level will represent for the selected function; typically this
value should be 0.
• Analog Output #1 (20 mA): Enter a value that the 20mA level will represent for the selected function.
SP6.4 Analog Output #2 – All of the setpoints and setup screens for Analog Output #2 are the same as those for
Analog Output #1.
TOSHIBA
JKSSS Series Solid State Soft Starters
57
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