Safety Function Sto; Safety Characteristic Data - Kollmorgen S70601-SE Instruction Manual

Kollmorgen
6.9

Safety function STO

A frequently required application task is the protection of personnel against the restarting
of drives. The S7xx01 servo amplifier offers, even in the basic version, a single channel
STO function (Safe Torque Off) that can be used as a personnel safe restart lock.
The safety function STO can be operated from a safe external control (semiconductor
output or driven contact).
The STO safety concept is certified. The safety circuit concept for realizing the safety
function "Safe Torque Off" in the servo amplifiers S700 is suited for SIL CL 2 according to
IEC 62061 and PLd CAT 3 according to ISO 13849-1.
Advantages of the safety function STO :
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—
—
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6.9.1

Safety characteristic data

The subsystems (servo amplifiers) are totally described for safety technics with the
characteristic data SIL CL, PFH
Device
STO-Enable
S701...S724 (single channel STO) Instruction Manual
the DC bus link remains charged up, since the mains supply line remains active
only low voltages are switched, so there is no contact wear
very little wiring is required
single or dual channel control possible
Operation
mode
STO single
channel
12/2010a
and T .
D M
EN 13849-1 EN 62061
PLd, CAT 3 SIL CL 2
Technical description
T [Year]
PFH [1/h]
M
0 20
37