Lenze E94AYAE SM301 - Manual (Page 13)

Lenze · SM301 safety module · Parameter setting & configuration · DMS 2.3 EN · 11/2013 · TD05
13
2 Introduction
2.4 Integration into the application
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SM301 V1.4
The SM301 V1.4 safety module additionally provides the following functions:
• Safely limited increment (SLI)
• Safely monitored deceleration ramp for SS1/SS2
• Safe speed and position detection with resolver as motor encoder without additional position
encoder
All pieces of information valid for only one or from one specific version is marked correspondingly
in this documentation.
2.4 Integration into the application
When a safety function is requested, the safety technology activates the corresponding safe
monitoring function. The only standstill function executed directly is the "safe torque off" (STO)
function. All other safety functions require a controller action which is safely monitored.
System block "LS_SafetyModuleInterface"
The LS_SafetyModuleInterface system block in the function block editor of the »Engineer« serves to
transmit the control and status information from the safety module to the application.
• For controllers of the "9400 ServoPLC" series, the SMI_SafetyModuleInterface system block in
the control configuration of the »PLC Designer« provides the interface for the safety module.
The contents of this interface are conform to the description for the LS_SafetyModuleInterface
system block
System block "LS_Limiter"/basic function "Limiter"
Moreover, the LS_Limiter system block, which contains the basic function "Limiter", is available in
the function block editor to integrate the safety system in the application.
• For one thing, the basic function "Limiter" provides a parameterisation interface in »Engineer«
for a comfortable setting of limit positions, limited speeds, and limit values, and for another it
enables the drive to be braked specifically after request through the safety module.
• If the basic function "Limiter" is to act directly on a request by the safety module, the
LIM_dwControl input of the LS_Limiter system block must be connected to the SMI_dwControl
output of the LS_SafetyModuleInterface system block.

Note!
To effect the corresponding action (e.g. braking to standstill, holding the standstill
position), the application engineer has to provide an appropriate interconnection in the
application.