Function description
Operating Manual PMCprotego S12(C)
1002528EN03
49
Timing diagram with the brake signal from the servo amplifier connected
Servo amplifier
ENABLE
Servo amplifier
BR+/BR-
STO / STO SIL3
A
B
C
D
E
∆SS1
-
Fig.: Safety function SBC
Legend:
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State of the holding brake connected to the safety card during phases A … E:
– A: Brake vented
– B: Brake engaged (due to DISABLE on the servo amplifier)
– C: Brake vented
– D: Brake engaged (due to STO on the safety card)
– E: Brake engaged (due to DISABLE on the servo amplifier)
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Servo amplifier ENABLE: ENABLE signal on the servo amplifier
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Servo amplifier BR+/BR: Brake on the servo amplifier
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SS1 Activate: Input for safety function SS1
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SS1 SIL3/Reset: Input for SIL3 and reset
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STO / STO SIL3: Internal shutdown route STO and second shutdown route STO SIL3
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STO Acknowledge: Output for feedback from safety function STO
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SBC+/SBC: Brake control output
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∆SS1: SS1 delay time
