Pilz PMCprotego S1, Operating Manual

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4.3 Safety functions
4 Function Description
The฀safety฀card฀monitors฀the฀following฀functions:฀
Sicherheitsfunktion_SS1_SS2_Ueberwach_Bremsrampe

Braking฀ramp
In฀the฀Configurator,฀the฀braking฀ramp฀is฀specified฀and฀monitoring฀is฀
activated.฀The฀braking฀period฀depends฀on฀the฀speed฀of฀the฀motor฀
when฀braking฀is฀started.฀
The฀braking฀ramp฀can฀be฀monitored฀via฀a฀maximum฀position฀error฀
specified฀in฀the฀Configurator.
Sicherheitsfunktion_SS2_Ueberwach_Bremsrampe_Normal

Braking฀ramp฀in฀normal฀operation
The฀drive฀starts฀with฀the฀configured฀braking฀ramp฀when฀safety฀func-
tion฀SS2฀has฀been฀activated.฀Once฀the฀time฀has฀elapsed,฀SOS฀is฀ac-
tivated.
Sicherheitsfunktion_SS2_SOS_Ueberwach_Stillstand_Pos

Standstill฀position
– The฀safety฀function฀monitors฀whether฀the฀standstill฀position฀re-
mains฀within฀a฀configured฀tolerance฀window.
– Safety฀function฀SS1฀(E-STOP฀braking฀ramp)฀is฀activated฀if฀the฀
standstill฀position฀leaves฀the฀tolerance฀window.
Sicherheitsfunktion_SOS_Ueberwach_Stillstand_Auto

Automatic฀SOS฀at฀standstill
A฀standstill฀threshold฀for฀activating฀the฀safety฀function฀SOS฀can฀be฀
specified฀in฀the฀Configurator.฀฀
Safety฀function฀SOS฀is฀activated฀when฀
– standstill฀is฀achieved฀while฀the฀SOS฀delay฀time฀is฀running.
– the฀SOS฀delay฀time฀has฀elapsed.
Sicherheitsfunktion_Sxx_Voraussetzung_S1
Prerequisites฀for฀normal฀operation:฀

Input฀"SS1฀Activate"฀and฀"SS1฀SIL3/Reset":฀"1"฀Signal฀(+24฀VDC)

"Ready"฀output:฀"1"฀Signal฀(+24฀VDC).฀The฀safety฀card฀is฀ready฀for฀op-
eration.

"STO฀Acknowledge"฀output:฀“0”฀Signal
Sicherheitsfunktion_Sxx_Voraussetzung_SIL3

To฀achieve฀SIL3฀or฀Ple:฀Connect฀the฀output฀"STO฀SIL3"฀to฀servo฀am-
plifier฀terminal฀X4A/฀3.
Sicherheitsfunktion_SS2_Ausloesung
Safety฀function฀is฀activated฀

By฀a฀1/0฀pulse฀edge฀at฀the฀input฀"SS2 Activate".
Sicherheitsfunktion_SS1_SS2_Ausloesung

The฀method฀by฀which฀the฀servo฀amplifier฀receives฀the฀command฀for฀
controlled฀braking฀of฀the฀motor฀is฀defined฀in฀the฀Configurator:
–
Drive-activated:
฀After฀the฀safety฀function฀is฀triggered,฀the฀safety฀
card฀issues฀a฀command฀to฀the฀servo฀amplifier฀for฀controlled฀braking฀
of฀the฀motor.฀The฀braking฀ramp฀is฀configured฀in฀the฀Configurator.
–
Controller-activated:
฀After฀the฀safety฀function฀is฀triggered,฀the฀
control฀system฀issues฀a฀command฀to฀the฀servo฀amplifier฀for฀con-
trolled฀braking฀of฀the฀motor.฀The฀braking฀ramp฀must฀only฀be฀con-
figured฀in฀the฀Configurator฀if฀monitoring฀of฀the฀braking฀ramp฀is฀also฀
activate฀there.