CSD Series
Variable Frequency AC Drive
MOTORTRONICS
- 46 -
Fn69 = Factory Setting = 0000
Controls four parameters of motor protection. The first digit controls
whether motor protection is provided by the drive or by another outside
source.
XXX0:
Electronic thermal motor protection effective
XXX1:
Electronic thermal motor protection ineffective
The second digit controls whether the thermal protection curve is
variable for a standard fan cooled motor or constant for a drive duty,
constantly cooled motor.
XX00:
Electronic thermal characteristics in accordance with standard
fan cooled motor
XX10:
Electronic thermal characteristics in accordance with drive
duty motor
The third digit controls whether the motor overload protection curve is
for a constant torque or variable torque application. When Fn69 =
XX0X and Fn05 = 18, set Fn37 to the rated frequency of motor to
ensure accurate thermal protection for the motor.
X0X0:
Motor protection OL for constant torque : 103% continuous.
150% for one minute
- When motor output current exceeds 103% motor protection
electronic thermal characteristics start operating. Motor
protection (OL1) allows operation at 150% for one minute before
shutting off drive output.
X1X0:
Motor protection OL for variable torque: 113% continuous.
123% for one minute
- When motor output current exceeds 113% motor protection
electronic thermal characteristics start operating. Motor
protection (OL1) operates at 123% for one minute to shut off
drive output (refer to curve (1) of Fig.21).
The fourth digit determines the mode of operation of the drive
after an overload condition has been detected.
0XX0:
Free run (coast) to stop after electronic thermal motor protection
is energized
- To allow the motor to coast to a stop program Fn69 = 0XX0.
After the electronic thermal motor protection is energized the
drive will baseblock immediately and the display will blink OL1.
To start the drive it is necessary to press RESET key or turn
on the remote control RESET terminal.
1XX0:
Operation continued after electronic thermal motor protection
is energized. Allows the motor to continue to run after the
overload condition is detected.
After electronic thermal motor protection is energized, the drive will
continue running and start blinking OL1 until current is lower than
103% or 113%, depending on the setting of Fn69. See the following
graphical representations of the effect of programming Fn69 on the
electronic thermal motor overload curves.
Figure 5 - 9
Electronic Thermal Protection
Summary of Contents for CSD Series
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