Functional Test - Kollmorgen AKD Serie Manual De Instrucciones

1.5.7.6 Functional test

Single/Dual Channel control, SIL CL2 / PLd
You must test the STO function after initial start of the drive, after each interference into the
wiring of the drive, or after exchange of one or several components of the drive.
Method 1, drive remain enabled
1. Stop drive, with setpoint 0V. Keep drive enabled.
DANGER: Do not enter hazardous area!
2. Activate the STO function for example by open-
ing protective screen.
3. The fault contact opens, the net contactor
releases, and the drive displays fault F602.
Dual Channel control, SIL CL3 / PLe
To achieve PLe / SIL CL3, the safe switching of the pulse inhibitor must be tested peri-
odically by analyzing the feedback signal from a safety control:
at the start of a system,
at the restart after triggering a protective device,
at least every 8 hours by the operator.
The inputs STO-ENABLE 1 and STO-ENABLE 2 are switched in turns according to a defined
test sequence. The switching state of the pulse inhibitor is available at a digital output of the
AKD and must be analyzed to achieve a sufficient diagnostic cover ratio:
Diagnostic with external not safe controller, test with dynamic sequence:
test cycle: with each device start, minimum once per day.
diagnostic cover ratio: 60 %.
Diagnostic with external safe controller, test with dynamic sequence.
test cycle: with each device start, minimum once per day.
diagnostic cover ratio: 90 %.
Refer to the AKD Installation Manual for detailed test sequence description.
AKD Product Safety Guide | 1 English
Method 2, drive disabled
1. Stop all drives, with setpoint 0V,
disable drive (Enable=0V).
2. Activate the STO function, for
example, by opening protective
screen
3. The drive displays warning n602.
Kollmorgen | kdn.kollmorgen.com | October 2018 21