SS2-r safety sub-function with MOVISAFE® CS..A
INFORMATION
The SS2‑r safety sub-function must not be used in conjunction with the EI7C FS built-in encoder.
The SS2-r safety sub-function monitors the amount of motor deceleration within specified limits.
If the motor speed falls below a defined limit value, the SS2‑r safety sub-function triggers the SOS function. To do this, the SOS safety sub-function must be enabled. The STO safety sub-function is triggered if the motor speed exceeds a specified limit value
If the SS2‑r safety sub-function is activated, first the parameterized Monitoring delay (8706.9) applies. During the monitoring delay, the parameterized Maximum speed (8707.1) is monitored. Then the monitoring of the parameterized speed ramp starts.
If the Ramp monitoring parameter is set to "linear", monitoring of the linear speed ramp starts at the currently detected actual speed when the SS2‑r safety sub-function is activated. The end speed of the speed ramp is the parameterized minimum speed.
If the Ramp monitoring parameter is set to "jerk-limited", monitoring of the jerk-limited speed ramp starts at the sum of the currently detected actual speed plus the parameterized offset speed after the SS2-r safety sub-function is activated. The end speed of the speed ramp is either the parameterized minimum speed or, if larger, the parameterized offset speed.
If the limit speed of the speed ramp reaches the end speed, the parameterized final state (STO, SOS, or SLI safety sub-function) is activated.
If the Inverter control parameter is set to "active", activating the safety sub-function results in the activation of the FCB19 Position hold control drive function in the inverter.
If the Inverter control parameter is set to "Not active", the inverter is not controlled. The FCB19 Position hold control drive function is activated in the idle state.
If the Inverter control parameter is set to "Active with limiting", the stop ramp of the inverter is limited to the following values:
- Minimum value of the SSx deceleration
- Maximum value of the parameterized jerk time
