Siemens CU240B-2 - Page 503

Appendix
A.7 Acceptance tests for the safety functions
Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC
503
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 via
PROFIsafe
When controlled via fail-
safe digital inputs (F-DI)
When controlled via
terminals STO_A and
STO_B on Power Mod-
ule PM240-2
• The inverter signals
the following:
"STO selection via
PROFIsafe"
(r9772.20 = 1)
• The inverter signals
the following:
"STO Selection via
terminal"
(r9772.17 = 1)
• The inverter signals
the following:
"STO Selection via
terminal on Power
Module"
(r9772.25 = 1)
• If a mechanical brake is not available, the motor coasts down.
A mechanical brake
brakes the motor and holds it to ensure that it remains
at 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.