Lenze i550 Series Project Planning Manual

Safe Torque O (STO)
The motor cannot generate torque and movements of the drive.
DANGER!
Automac restart if the request of the safety funcon is deacvated.
Possible consequences: Death or severe injuries
▶
You must provide external measures according to EN ISO 13849−1 which ensure that the
drive only restarts aer a conrmaon.
DANGER!
The power supply is not safely disconnected.
Death or serious injury due to electrical voltage.
▶
Turn o the power supply.
Details
Safe disconnecon of the drive
1.A safety sensor requests the safety funcon.
2.The pulse width modulaon is safely switched o by the safety unit.
The inverter switches to the STO acve device status (0x6041, Bit15 = 0).
The power drivers do not generate a rotang eld anymore.
The motor is safely switched to torqueless operaon (STO).
The funconal principle depicted applies to Basic Safety (STO) and Extended
Safety. The terminals shown apply to Basic-Safety.
PWM
µC
3x
3x
X1
SU
M
SIA SIB
GS
Fig. 13: Funconal principle of safety technology for Extended Safety and Basic Safety (STO)
X1 Control terminals of the safety unit
SU Basic Safety (STO) or Extended
Safety
µC Microcontroller
PWM Pulse width modulaon
M Motor
Funconal descripon
Product extensions
Funconal safety
Safety funcons
235

Lenze i550 Series Specifications

General

Protection Class	IP20
Ambient Temperature	-10°C to +50°C
Overload Capacity	150% for 60 seconds
Control Type	Vector control
Communication Interfaces	CANopen, Modbus, Ethernet, PROFIBUS, PROFINET
Safety	STO (Safe Torque Off)
Frequency Range	0 Hz
Cooling Method	Air cooling
Storage Temperature Range	-25°C to +70°C
Input Voltage Range	3-phase 380...480 V AC -15%/+10%