ABB FSO-21 - Page 528

528 Technical data
SSM without encoder
Encoderless SSM includes the following subsystems: FSO encoderless speed
measurement, FSO Digital input (optional), FSO Logic (1 or 2), and FSO Digital
output.
Note: This safety function, SSM without encoder, can be configured so that it is
permanently on. In this case digital input is not included in the safety calculation.
SSM with encoder
Safe speed monitor (SSM) with encoder includes the following subsystems: safety
encoder (not provided by ABB), FSE-31, FSO Digital input (optional), FSO Logic (1 or
2), and FSO Digital output.
Note: This safety function, SSM with encoder, can be configured so that it is always
active. In this case digital input is not included in the safety calculation.
1 FSO encoderless speed measurement
2 FSO Digital input (optional)
3 FSO Logic (1 or 2)
4 FSO Digital output
1 Safety encoder, input device
2 FSE-31
3 FSO Digital input (optional)
4 FSO Logic (1 or 2)
5 FSO Digital output
1 2 3 4
2 3 4 5
1