User manual

82
6 - PARAMETER DESCRIPTION
P9 Up To Speed Time QST 09
LED Display LCD Display
Range 1– 900 Seconds (Default 20)
Description The Up To Speed Time parameter sets the maximum time the motor can take to accelerate to full speed. A
stalled motor condition is detected if the motor does not get up-to-speed before the up-to-speed timer expires.
The motor is considered up-to-speed once the current stabilizes below 175 percent of the FLA value and the
ramp time expires.
z NOTE: During normal acceleration ramps, the up-to-speed timer has to be greater than the sum of the
highest ramp time in use and the kick time. The up-to-speed timer does not automatically change to be greater
than the ramp time. If a ramp time greater than the up-to-speed timer is set, the starter will declare an
up-to-speed fault every time a start is attempted.
z NOTE: When the Start Mode (P10 / CFN 01) parameter is set to "Voltage Ramp", the UTS timer acts as
an acceleration kick. When the UTS timer expires, full voltage is applied to the motor. This feature can be
used to reduce motor oscillations if they occur near the end of an open loop voltage ramp start.
z NOTE: When the Starter Type (P74 / FUN 07) parameter is set to "Wye-Delta", the UTS timer is used as
the transition timer. When the UTS timer expires, the transition from Wye starting mode to Delta running
mode takes place if it has not already occurred.
Fault Code 01 - Up to Speed Fault is declared when a stalled motor condition is detected.
See Also Ramp Time 1 (P8 / QST 08) parameter on page 81.
Start Mode (P10 / CFN 01) parameter on page 83.
Kick Time 1 (P14 / CFN 11) parameter on page 86.
Ramp Time 2 (P24 / CFN 05) parameter on page 94.
Kick Time 2 (P26 / CFN 13) parameter on page 94.
Starter Type (P74 / FUN 07) parameter on page 124.
Theory of Operation section 7.3, Acceleration Control on page 140.
Theory of Operation section 7.8, Wye-Delta on page 160.
QST: UTS Time
09 20 sec