Danfoss VLT AutomationDrive FC 300 Series Installation Guide

9 Maintenance, Diagnostics, and Troubleshooting
9.1 Maintenance and Service
C A U T I O N
FIRMWARE MODIFICATIONS
Only Danfoss is authorized to change the firmware. If other parties change the firmware, the warranty expires. Furthermore,
Danfoss cannot be held liable for any consequences that changes may have on the functional safety.
N O T I C E
UPDATES TO FIRMWARE
Contact Danfoss to get a firmware update.
C A U T I O N
MODIFICATIONS TO THE UNIT
Only Danfoss is allowed to make hardware modifications of the safety option. If other parties change the unit, the warranty
expires. Furthermore, Danfoss cannot be held liable for any consequences the changes may have on the functional safety.
C A U T I O N
SERVICING
Once a year, check that the safety option functions properly to ensure the safety of the machine. Perform the check by testing
the safety function and by power cycling the options used in the safety chain.
9.1.1 Yearly Test
According to EN ISO 13849-1, EN IEC 62061, and EN IEC 61508, the safety-relevant circuits of the safety option must be tested regularly
to ensure correct functioning. It is required for PL d or SIL2 to conduct a functional test every 12 months to detect any failure or
malfunction of the STO functionality. For lower PL or SIL, it is a recommendation. After the power supply has been connected, the
safety option checks its circuits to switch off the torque each time the STO function is selected. The safety option monitors the regular
test interval of its safety-relevant circuits using a time module.
After 1 year in operation, the drive shows a message telling to perform a yearly test. The following types of yearly tests exist:
• DI1 yearly test: Test only the activation of DI1. No power cycling is required. When DI1 is set to Disabled, no test is required.
• DI2 yearly test: Test only the activation of DI2. No power cycling is required. When DI2 is set to Disabled, no test is required.
• PUST yearly test: Power cycle the drive, set parameter 42-90 Restart Safe Option to [1] YES for restarting the safety option, or trigger
an external error and press [RESET].
Maintenance, Diagnostics, and
Troubleshooting
Installation Guide | VLT®Safety Option MCB 152
AN327351953089en-000101 / 130R0578| 57
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Danfoss VLT AutomationDrive FC 300 Series Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 300 Series
Category	DC Drives
Language	English