Vacon OPTAF, User Manual

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vacon • 34 STO AND SS1 SAFETY FUNCTIONS
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
3.6 Maintenance
3.6.1 OPTAF-related monitoring values
Table below lists the OPTAF-specific values that should be considered for logging when submitting
support request for Danfoss support.
If there is room, also add other signals related to the logged situation to the monitoring. They can
help to link the OPTAF-specific signals to the drive state and external system events.
3.6.2 Faults related to the Safe Torque Off (STO) or Safe Stop 1 (SS1) safety
functions
Table 10 shows the normal warning / alarm, generated when STO safety function is active.
CAUTION! If any service or repair is to be conducted on the drive installed
with OPTAF board please follow the check list given in Chapter 3.5.2.
CAUTION! During maintenance breaks, or in case of service/repair, the OPTAF
board might have to be removed from its slot. After reconnecting the board,
ALWAYS make sure that the STO or SS1 safety functions are active and fully func-
tional by testing them. See Chapter 3.5.6.
Table 9. Internal variables of the drive for monitoring and logging
Variable Source/Type Description
OPTAFStatus Firmware Shows internal status related to OPTAF option board.
B0
=
Safe Off active
B1
=
Thermistor input is active
B2
=
Unexpected problem in Safe Off circuitry
B3
=
Clear Off channel 1 active
B4
=
Clear Off channel 2 active
B5
=
Test pulse logic has detected short circuit in thermistor
input
B6
=
Test pulse logic has detected problems in thermistor
input
B7
=
OPTAF board overvoltage detected
B8
=
OPTAF board undervoltage detected
B9
=
Test pulse logic has detected problems in safe inputs
B10
=
Trip input not set, even if Safe Off inputs are active
B11
=
OPTAF board +5 V or REF voltage problem detected
B12
=
OPTAF board has been removed
B13
=
OPTAF board with EEPROM error detected
B14
=
OPTAF board has been found by identification
B15
=
Safe off fault generated, that may not be cleared