Lenze E94AYAE SM301 - Manual (Page 11)

Lenze · SM301 safety module · Parameter setting & configuration · DMS 2.3 EN · 11/2013 · TD05
11
2 Introduction
2.2 Function mode of the safety module
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2.2 Function mode of the safety module
Disconnecting paths
The transmission of the pulse width modulation is safely (dis-)connected by the safety module.
Hence the power drivers do not create a rotating field. The motor is safely switched to torqueless
operation (STO).
Safety state
When the controller is switched off by a safety module, it is changed to the "Safe torque off active"
status
• "Drive is torqueless" (0x00750003) is entered in the logbook.
• In C00183, "Safe torque off active" is displayed.
Fail-safe state
Disconnecting paths of the safety module
SMx Safety module
Xx Input / output terminal
C Control section
μC Microcontroller
PWM Pulse width modulation
P Power section
M Motor

Note!
If internal errors of the safety module are detected, the motor is safely switched to
torqueless operation (fail-safe state).
M
SMx
PWM
µC
P C
3x
3x
Xx