gefran ADV200 Functions Description And Parameters List page 88

0 Encoder 1
1 Encoder 2
Menu PAR Description
17.38 2172 SpdFbkLoss code
The Speed fbk loss alarm generated by an encoder fault is displayed. As each type of encoder generates the
alarm differently (incremental signal error, absolute signal error, serial error), this parameter displays informa-
tion about the alarm that has occurred. If there are several, simultaneous causes, these are shown in this
parameter.
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 ADV200 QS manual.
Note !
To interpret the causes of the alarm correctly, you will need to convert the hexadecimal code written in parameter 17.29 SpdFbk-
Loss 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
intervention 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.
88
UM Type
UINT32
Bit Value
0 0x01
1 0x02
2 0x04
3 0x08
4 0x10
5 0x20
6 0x40
7 0x80
8 0x100
10..15
16..31
(hexadecimal value)
FB BIT Def
0
Name
CHA
CHB
CHZ
MOD_INCR
MOD_ABS
CRC_CKS_P
ACK_TMO
DT1_ERR
Error Setup
Free
Depending on the type of feedback.
Min Max
0 0
ADV200 • Functions description and parameters list
Acc Mod
ER FVS