112 EM-ABS-01 for ACU 03/12
8.4.13.2 Homing
When it comes to positionin
, homin
may be required or recommended, dependin
on
the application. If no absolute value encoder is used, homin
to a known point (e.
.
reference cam or limit switch) will typically be performed first upon restoration of mains
supply.
When an absolute value encoder is used, homin
durin
operation is unwanted in
many situations. If homing is not to be performed during operation, you can set
O
-
eration mode
1228 = “10 – No homing”.
By using different frequency inverter data sets, you can configure a setup mode, in-
cluding homing, and a normal operation mode.
8.4.14 Warning Dig. Encoder
ia parameter Warning Dig. Encoder 1274, the current warnin
status of EnDat 2.1
encoders is displayed. This information can be used for analyzing and eliminating appli-
cation problems. Parameter
Warning Dig. Encoder 1274 shows the current warnin
with an abbreviation. For evaluation via field bus, parameter
Warning Dig. Encoder
1273 with the warnin
value in hexadecimal representation can be used. By addition
of the values, several warnings can be displayed simultaneously.
Warnings which are present at the same time are represented by the bit combination
or mathematical addition.
Present warnings can be displayed via the application warning mask in Bit 9.
EnDat 2.1 warnings
Abbreviation in
Warning Dig. Encoder 1274
Bit code
Warning Dig. Encoder 1273
Meaning
Bit Value
Fcoll 0 0x0001 Frequency collision
Temp 1 0x0002 Temperature exceeded
Illum 2 0x0004 Control reserve lighting
Batt 3 0x0008 Battery status
Ref 4 0x0010 Reference point
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