Safety Functions per EN 61800-5-2
The following safety functions can be implemented using speed monitors, although not all functions may be supported by a single device:
STO – Safe Torque Off
Safe turning off of the torque in the frequency inverter. The speed monitor provides a safety output signal to the frequency inverter.
SS1 – Safe Stop 1
Safe monitoring of the braking ramp followed by power shut-off.
SS2 – Safe Stop 2
Safe monitoring of the braking ramp followed by standstill monitoring.
SOS – Safe Operating Stop
Safe monitoring of standstill.
SBC – Safe Brake Control
Safety output signal for turning off power to an external brake.
SLS – Safely Limited Speed
Safe monitoring of maximum speed.
SSM – Safe Speed Monitor
Safe monitoring of speed. A safe signal indicates whether the speed is below a specified limit.
SSR – Safe Speed Range
Safe monitoring of a specified speed range.
SDI – Safe Direction
Safe monitoring of a direction of motion.
SLA – Safely Limited Acceleration
Safe monitoring of maximum acceleration.
SAR – Safe Acceleration Range
Safe monitoring of a specified acceleration range.
SCA – Safe Cam
Safe monitoring of a specified position range.
SLP – Safely Limited Position
Safe braking ramp monitoring with position limits.
SLI – Safely Limited Increment
Safe monitoring of an increment for jog mode.
SLT – Safely Limited Torque
Safe monitoring of the maximum torque or force.
STR – Safe Torque Range
Safe monitoring of a specified torque/force range.
SMT – Safe Motor Temperature
Safe montoring of the maximum temperature.
Safe analog values for safety functions SLT, STR, SMT
- 2 x 4 ... 20 mA
- 2 x 0 ... 10 V
- 2 x Pt100
The corresponding sensor is evaluated using a safe analog input signal.
