Pilz PMCprotego D.72/000/0/0/2/208-480VAC - Manual (Page 53)

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: [email protected]
4-19
4.3 Control element
4 Function Description
4.3.3.3 Safety function STO without a safety card
Safety function STO without a safety card 4- ][Funktion_STO_ohne_Sicherheitskarte_1
Activation of the safety function STO on the servo amplifier can be single
or dual-channel.
STO single-channel, without feedback (SIL 2, PL d)
With single-channel activation of the safety function STO, both shut-
down routes are switched through one output on a safety relay or safety
control system.
][Funktion_STO_ohne_Sicherheitskarte_2_D48
][Funktion_STO_ohne_Sicherheitskarte_3_D48
STO dual-channel, with feedback (SIL CL 3, PL e)
With dual-channel activation, both shutdown routes are switched sepa-
rately. To achieve PL e or SIL CL 3, the safe pulse disabler must be test-
ed periodically to ensure it switches safely, by evaluating the two
feedback signals STO1-STATUS and STO2-STATUS from a safety con-
trol system.
 When a plant is started up.
 On restart after a protection device has been triggered.
 At least every 8 hours by the operator.
The inputs STO1-ENABLE and STO2-ENABLE are switched alternately.
The switch states of both shutdown routes on the pulse disabler are
available on the digital outputs STO1-STATUS and STO2-STATUS of
the PMCprotego D. They are evaluated by a safety control system.
][Funktion_STO_ohne_Sicherheitskarte_4_D48
STO single-channel
Safety function is activated via the input STO1-
ENABLE
Input STO2-ENABLE must be connected to the
input STO1-ENABLE
X4
STO1-ENABLE
STO2-ENABLE
7
5
PMCprotego D.x
24 V STO
POWER 3