gefran SIEIDrive ADV100 Functions Description And Parameters List page 67

For further details please refer to the description of the Speed fbk loss 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
SpdFbkLoss code, 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
A0 is not present in the value column of the " Speed fbk loss [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.
ADV100 • Functions description and parameters list
Bit Value
2 0x04
3 0x08
4 0x10
5 0x20
6 0x40
7 0x80
8 0x100
10..15
16..31
(hexadecimal value)
Name
CHZ
MOD_INCR
MOD_ABS
CRC_CKS_P
ACK_TMO
DT1_ERR
Error Setup
Free
Depending on the type of
feedback.
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