Lenze i510 User Manual

6 Function & parameter description
Group 3 – Motor control
62 Lenze · Inverter i510 / i550 - Cabinet · Operation Manual · 0.4 EN · 02/2016
output current or inverter temperature are too high. Minimal Switching
Frequency is limited to 4 kHz or 8 kHz
31, 32, 33:
Optimized for best inverter efficiency (asymmetrical modulation).
Variable switching frequency: Inverter reduces the switching frequency if
output current or inverter temperature are too high. Minimal Switching
Frequency is limited to 4 kHz or 8 kHz
6.5.9 Motor thermal overload (i2xt)
The function monitors the thermal power dissipation from the measured motor currents on the basis of a math-
ematical model. This can be used for motor overload protection. It is only usable for functional protection, i.e. to
guarantee the service life time of the motor. It is not suitable as safety relevant protection against energy in-
duced hazards.
DANGER!
Fire hazard from motor overload
Additional means must be provided to prevent fire hazards arising from motor overload
 Independent temperature monitoring of the motor with shut down
DANGER!
Uncontrolled motor behavior
If the motor overload occurs the inverter stops modulating and no torque is available on the motor. On motors
under load without holding brake this can lead to uncontrolled motor movements.
 Use the inverter only under the specified load conditions.
P308:1
0x2D4B:1
Maximum utilisation [60 s]
i510
i550
R/W
30 ... [150] ... 200 %
Configuration of the I2xt trip time.
If the motor is running with nominal current (P323) for longer than the
configured trip time, the inverter will trip according the configured reac-
tion.
P308:2
0x2D4B:2
Speed compensation
i510
i550
R/W
0: On
1: Off
Slow speed compensation (<40 Hz)
0: On
The over load trip time on motor is reduced to compensate the de-
creased cooling of self-cooled AC induction motors when running at slow
speed.
1: Off
Function disabled, no reduction.
Notes:
- For compliance with UL the user must enable this function or use an
appropriate PTC to protect the motor.
- Function to protect motors at speed lower than 40 Hz
P308:3
0x2D4B:3
Error response
i550
R/W
3:Fault
(Reference see P310:1)
Configuration of the i2xt over load fault reaction. If the trip level is
reached to motor will react as defined.
Notes:
- For compliance with UL the user must enable this function or use an
appropriate PTC to protect the motor.

Lenze i510 Specifications

General

Product Category	DC Drives
Series	i510
Protection Class	IP20
Communication	CANopen, Modbus RTU
Protection Features	Overvoltage, Undervoltage
Operating Temperature	-10 to +50 °C
Storage Temperature	-25 to +70 °C
Humidity	5% to 95% (non-condensing)
Control Mode	V/f control