YASKAWA Sigma-7 SGD7S Series

12 Safety Functions
12.1 Overview
This chapter provides detailed information on the safety functions of the SERVOPACK.
12.2 Introduction to the Safety Functions
12.2.1 Safety Functions
Safety functions are built into the SERVOPACK to reduce the risks associated with using
the machine by protecting workers from the hazards of moving machine parts and other-
wise increasing the safety of machine operation.
Especially when working in hazardous areas inside guards, such as for machine mainte-
nance, the safety function can be used to avoid hazardous moving machine parts.
The SERVOPACK provides the following four safety functions for functional safety stand-
ards.
Function Description SERVO-
PACK
Built-in
Function
Safety Module Func-
tion
Active
Mode
Function
*1
Hard Wire Base
Block (HWBB and
SBB)
This safety function is
equivalent to the Safety
Torque OFF function
defined in IEC
61800-5-2.
Yes
(HWBB)
Yes
(SBB
*2
)
−
Safety Base Block
with Delay (SBB-
D)
*2
This safety function is
equivalent to the Safety
Stop 1 function defined
in IEC 61800-5-2.
− Yes Yes
Safe Position Mon-
itor with Delay
(SPM-D)
*2
This safety function is
equivalent to the Safety
Stop 2 function defined
in IEC 61800-5-2.
− Yes Yes
Safe Speed Limit
with Delay (SLS-D)
*2
This safety function is
equivalent to the Safely-
Limited Speed function
defined in IEC
61800-5-2.
− Yes −
*1. The Active Mode Function stops the motor according to the speed reference that is
preset in a parameter in the SERVOPACK when the safety request input signal turns OFF
during SBB-D or SPM-D. The Active Mode Function is not a safety function in the appli-
cable standards. Keep this in mind when you design the system.
Refer to the following section for details.
Ä Chap. 12.8.5 ‘Active Mode Function’ page 480
*2. A Safety Module (optional) must be connected to use this function. Refer to the fol-
lowing manual for application procedures.
& Σ-V-Series/Σ-V-Series for Large-Capacity Models/Σ-7-Series Installation Guide Safety
Module (Manual No.: SIEP C720829 06)
Sigma-7 Series SERVOPACKs
Safety Functions
Introduction to the Safety Functions > Safety Functions
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