ADV100 • Functions description and parameters list 67
Bit Value Name
2 0x04 CHZ
3 0x08 MOD_INCR
4 0x10 MOD_ABS
5 0x20 CRC_CKS_P
6 0x40 ACK_TMO
7 0x80 DT1_ERR
8 0x100 Error Setup
10..15 Free
16..31 Depending on the type of
feedback.
For further details please refer to the description of the Speedfbkloss alarm and the “9.2.1 Speed fbk loss alarm
according to the type of feedback” chapter of ADV100 QS manual.
Note ! To interpret the causes of the alarm correctly, you will need to convert the hexadecimal code written in parameter 17.29
SpdFbkLosscode, PAR 2172, into the corresponding binary code and then use the table of the encoder being used to
check the various active bits and relative description.
Example with Endat encoder:
PAR 2172 = A0H (hexadecimal value)
A0 is not present in the value column of the “ Speedfbkloss [22] with absolute EnDat encoder” table.
A0 must be seen as a bitword meaning A0 -> 10100000 -> bit 5 and bit 7. This indicates the simultaneous interven-
tion of the following causes:
Bit 5 = 20H Cause: disturbed SSI signals cause a CKS error or Parity
Bit 7 = 80H Cause: Encoder has detected malfunction and signals this to the drive via Error bit. Bits 16..31 contain
the type of malfunction detected by the encoder.
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