Pilz PMCprimo DriveP.01/AA0/4/0/0/208-480VAC - Manual (Page 41)

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4-23
4.3 Safety functions
4 Function Description
 STO Acknowledge: Output for feedback from safety function STO
 SRA Acknowledge: Output for monitoring the limit value on the motor
4.3.6 Safe speed range - SSR
Safe speed range - SSR 4- Sicherheitsfunktion_SSR_Ueber
The safety function "safe speed range" (SSR) monitors the drive's cur-
rent speed to ensure it stays within a maximum and minimum permitted
limit value.
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_SSR_Voraussetzung  Input "SSR Activate": "1" Signal (+24 VDC)
Sicherheitsfunktion_Sxx_Voraussetzung_SIL3  To achieve SIL3 or Ple: Connect the output "STO SIL3" to servo am-
plifier terminal X4A/ 3.
Sicherheitsfunktion_SSR_Ausloesung
Safety function is activated
 By a 1/0 pulse edge at the input "SSR Activate".
Sicherheitsfunktion_SSR_Reaktion
Reaction:
 SSR delay time starts
 Once the SSR delay time has elapsed, the speed is monitored.
 Output "SRA Acknowledge": "1" Signal
 If the limit value is exceeded, safety function SS1 is activated.
Sicherheitsfunktion_SLS_SSR_Toleranz
A tolerance range may also be set for the limit values used to monitor
the speed. This tolerance range modifies the set limit values. As a result,
one-off or periodic overshoots that exceed the limit values can be toler-
ated.
The following values can be set for the tolerance range:
 Tolerance amount, which takes into account the size of the over-
shoots.
 Tolerance time, which takes into account the length of the overshoots
 Tolerence period that takes into account the variation period
INFORMATION
See the Configurator's online help for details of how to set the
parameters for the tolerance range.