
Function description
Operating Manual PMCprotego S12(C)
1002528EN03
17
INFORMATION
If the "STO SIL3" output is not used, 24 VDC must be applied to the "STO2
ENABLE" input on the servo amplifier.
The singlepole digital outputs O0 … O3 signal the status of the safety functions. Outputs
are assigned to the signals in the safety card's Configurator. The following signals are avail
able:
}
SSA Safe Standstill Acknowledge
– 1: Motor is within the permitted limit values for standstill.
– 0: Standstill monitoring is inactive or motor is outside the standstill range
}
SDA Safe Direction Acknowledge
– 1: Drive is moving in the permitted direction.
– 0: Drive is not moving in the permitted direction or monitoring is not activated.
}
SRA Safe Range Acknowledge
– 1: Drive is moving within the permitted limit values for speed or position.
– 0: Drive is moving outside the permitted limit values for speed or position, or monit
oring is not activated.
}
SBA Safe Brake Acknowledge
– 1: Brake test was run within the defined period
– 0: Brake test must be activated within a selectable time period, otherwise the axis is
shut down.
The table below shows which outputs signal the status of which safety function.
Output
In
ternal
error
No safety
function ac
tivated
SS1 SS2 SOS SLS SSR SDI
SLI
SLP SBT
STO Acknowledge x
x
x
x
x
x
x
x
x
x
x
SSA Safe Stand
still Acknowledge
x
x
x
x
SDA Safe Direc
tion Acknowledge
x
SRA Safe Range
Acknowledge
x
x
x
x
SBA Safe Brake
Achnowledge
x
Ready
x
x
x
x
x
x
x
x
x
x
Signals at the output
}
“0” signal (0 V) at the output:
– Output is high impedance
– No current to the load
– Safety function not activated
}
“1” signal (+24 V) at the output:
– Output is low impedance