Toshiba TE-18-BP Quick Start Up Manual page 37

Basic Installation and Operation Guide
Manual Reset
The factory default setting is Manual Reset. This means that when the Overload Trip is activated, the
starter cannot be restarted without pressing the Reset key. The Overload Trip will not reset until the motor
cools down (see 3.1.3.d). The Manual Reset function is also "trip free". Holding in the Reset key will not
prevent the Overload Trip from activating and protecting the motor.
Note:
When the Overload Trip activates, the Overload LED will glow solid. When the motor
cools down, the LED will begin to flash, indicating that the Overload Trip can be reset.
Automatic Reset
If Automatic Reset is necessary, change from Manual Reset to Automatic Reset by using Function F005.
(See Section 5 of the full Installation, Operation and Maintenance for details). In this mode, a 3-wire
control circuit will be capable of restart when the TE Series has reset itself after the cool down period.
WARNING!
WARNING: MOTOR CONNECTED TO THIS EQUIPMENT
MAY START AUTOMATICALLY WITHOUT WARNING
NEMA Class Trip Curves
NEMA Class trip curves are based on a common tripping point of 600% of motor Full Load Amps (FLA).
Curves vary by the amount of time before the unit trips. As an example, a Class 20 curve will trip in 20
seconds at 600% of FLA. The factory default setting of Class 10 will trip in 10 seconds at 600% of FLA.
Dual Overload Trip Curves
The TE Series Soft Starter provides two separate Overload Trip Protection Curves, one for starting and one
for running conditions. The starter's At-Speed detection circuit determines when the motor has reached full
speed. When the At-Speed condition is reached, the overload trip curve will shift from the Start to the Run
level, as programmed in Functions F003 and F004. See Section 5.6.1 of the Advanced Installation,
Operation and Programming Manual for programming details.
Starting Overload Trip Curve
During the start mode, Overload Trip Curves are selectable from NEMA Class 5, 10, 15, 20, 25, and 30.
The default setting of Class 10 allows protection for the overload capacity of the soft starter as well as
the motor. Use a higher Trip Class only if nuisance tripping occurs with the default setting.
Running Overload Curve
During the Run mode, Overload trip curves are selectable from NEMA Class 5, 10, 15, 20, 25, and 30.
Program the appropriate curve according to the characteristics of your motor and load.
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TE Series Digital Solid State Soft Starters 18 – 1250A
Two-wire control systems may restart without warning when Auto Reset
is selected. Extreme caution should be exercised. To prevent automatic
restarting with 2-wire control systems, use external interlocking to
provide sufficient warning and safety to operators. A Warning Label
similar to that shown below (and the one provided in the packet with
this manual) must be located where visible (on the starter enclosure
and/or the driven equipment) as required by local code.