Siemens CU240B-2 Function Manual

6.5.2.3 Extended function SS1 with acceleration monitoring
Select SS1
Function
1. The higher-level control selects the SS1 safety function via a fail-safe digital input or via
PROFIsafe safe communication.
2. If the motor has already been switched off when selecting SS1, then the inverter safely
switches off the motor torque with the safety function STO.
If the motor is switched on when SS1 is selected, the inverter brakes the motor with the
OFF3 ramp-down time. The inverter monitors braking using the SAM function (Safe
Acceleration Monitor).
3. The inverter safely switches off the motor torque with the STO safety function if one of the
two conditions is fulfilled:
– The actual speed reaches the value of the "standstill monitoring".
– The delay time has expired.
'HOD\WLPH
6723%ൺ672
7KHPRWRUFRDVWV
GRZQWRDVWDQGVWLOO
6SHHG
*UHHQRQ
W
W
6$06%5DFWLYH
66DFWLYH
672DFWLYH
<HOORZRQ
<HOORZRQ<HOORZIODVKHVVORZO\
W
'HVHOHFW66
212))
6KXWGRZQVSHHG
6WDQGVWLOOPRQLWRULQJ
5HDG\WRVZLWFKRQ
/('5'<
/('6$)(
6$0
Figure 6-19 Braking behavior and diagnostics of the safety function SS1 (Safe Stop 1)
Inverter signal Parameter Included in the PROFI‐
safe telegram
Can be interconnec‐
ted with
F-DI F-DO
STO active (extended functions) r9722.0 ✓ --- ✓
SS1 active (extended functions) r9722.1 ✓ --- ✓
Operation
6.5 Safe Stop 1 (SS1)
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
242 Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD

Siemens CU240B-2 Specifications

General

Brand	Siemens
Model	CU240B-2
Category	Inverter
Language	English