Siemens SINAMICS G120D - Page 367

Appendix
A.9 Acceptance tests for the safety functions
Converter with control units CU250D-2
Operating Instructions, 04/2014, FW V4.7, A5E34261542B AA
367
Procedure
To perform an acceptance test of the STO function as part of the basic functions, proceed as
follows:
Status
1.
The inverter is ready
• The inverter signals neither faults nor alarms of the safety functions (r0945[0…7],
r2122[0…7]).
• STO is not active (r9773.1 = 0).
2.
Switch on motor
2.1.
Enter a speed setpoint ≠ 0.
2.2.
Switch on the motor (ON command).
2.3.
Check that the correct motor is running.
3.
Select STO
3.1. Select STO while the motor is running
Test each configured activation, e.g. via digital inputs and PROFIsafe.
3.2.
Check the following:
When controlled by PROFIsafe
For control via terminal
• The inverter signals the
following:
"STO selection via PROFIsafe"
(r9772.20 = 1)
• The inverter signals the following:
"STO Selection via terminal"
(r9772.17 = 1)
• If a mechanical brake is not available, the motor coasts down.
A mec
hanical brake brakes the motor and holds it to ensure that it remains
at a standstill.
• The inverter signals neither faults nor alarms of the safety functions
(r0945[0…7], r2122[0…7]).
• The inverter signals the following:
"STO is selected" (r9773.0 = 1).
"STO is active" (r9773.1 = 1).
4.
Deselect STO
4.1.
Deselect STO.
4.2.
Check the following:
• STO is not active (r9773.1 = 0).
• The inverter signals neither faults nor alarms of the safety functions
(r0945[0…7], r2122[0…7]).
You have performed the acceptance test of the STO function.