Safety Limits - Lenze i950 Commissioning Manual

Technology application (TA) basic settings
Motion settings
Limitations
6.2.11.5

Safety limits

The inverter has functions for supporting the safety technology. Depending on the required
safety function, automatic intervention in the setpoint value generation of the axis takes
place.
When safety technology is used in coupled axes, it might be required that a requested safety
function does not respond within the single axes but that the responses are recognised cen-
trally. This recognition can be realised via a virtual master.
The following safety functions can be limited or deactivated:
4Safe Torque Off (STO)
^ 374
4Safe Stop 1 (SS1)
^ 379
4Safe Stop 2 (SS2)
^ 382
4Safely-Limited Speed (SLS)
4Safe Direction (SDI) positive/negative
The requested safety function is displayed in the Status limiter parameter.
The safety function can be deactivated in the Deactivate safety functions parameter.
40x500A:162
In the case of deactivated functions, the axis does not influence the setpoint value.
Safe stop (SSE) / Safe stop 2 (SS2)
Limited Stop 1
Status display 0x500A:163 bit 1
Quick stop application - deceleration
Quick stop application - jerk 0x500A:049
After the standstill is reached, the drive is disabled.
Safely limited speed (SLS) 1 ... 4
The following parameters limit the speeds and set delay times of the axis:
Limited speed 1
Limited speed 2
Limited speed 3
Limited speed 4
If the current setpoint speed exceeds the value set for the requested limited speed, the
•
setpoint speed is reduced to the requested limited speed within the parametrised delay
time.
If several limited speeds are requested at the same time, the lowest speed is reduced with
•
the highest deceleration.
Status display in Status limiter parameter bit 4 ... bit 7.
76
1 ... 4
^ 388
^ 396
0x500A:048
Speed
0x500A:150
0x500A:152
0x500A:154
0x500A:156
40x500A:163
40x500A:163
Limited Stop 2
Status display 0x500A:163 bit 2
Quick stop application - deceleration
Quick stop application - jerk 0x500A:049
The drive is braked to standstill with the parameters Quick stop applica-
tion - deceleration und Quick stop application - jerk.
After standstill has been reached, the position control of the drive
remains active.
Deceleration time
0x500A:151
0x500A:153
0x500A:155
0x500A:157
0x500A:048