Etel DSC2P User Manual

Operation & Software Manual
90
Direct Drives & Systems
Chapter C: System functions ETEL Doc. - Operation & Software Manual # DSC2P 903 / Ver. F / 3/6/05
12.3.5 Macro modes (K79=100, 101 and 104)
Refer to the ’DSO-MAC User's Manual’ for more information.
12.3.6 Position factors for DLLs
The parameters below are only used by the DLLs, to calculate the position unit with indirect encoder.
In ETEL Tools, all the quantities representing a position given in ISO unit can be multiplied by the Kpos-iso
factor. Kpos-iso = K242 / K243.
That way, it is possible to make the position scale bigger or smaller. The other ISO quantities (speed,
acceleration...) will be adjusted accordingly. It is really interesting for an indirect measurement of position (for
example if the user wants to measure the position on a linear movement which is caused by a rotary motor
including the encoder).
12.3.7 Encoder monitorings
They measure the signal values given by the analog position encoder.
The conversion formula to know the measured encoder signal value in ISO units is:
The x value depends on the type of position controller:
Remark: To convert ISO units ([m/s], f.e.) and ETEL units ([upi], f.e), refer to §19.
K66=4 allows the user to display on the scope the amplitude of the encoder's analog signals as
well as the position of the index.
Available on DSC2P DSC2V DSCDP DSCDL DSCDM
Available on DSC2P DSC2V DSCDP DSCDL DSCDM
K Name Comment
K242 Position multiplication factor Used by DLLs only to calculate the position unit with indirect encoder
K243 Position division factor Used by DLLs only to calculate the position unit with indirect encoder
Available on DSC2P DSC2V DSCDP DSCDL DSCDM
M Name Comment
M40 Analog encoder sine signal Encoder sine signal value
M41 Analog encoder cosine signal Encoder cosine signal value
M42 Analog encoder index signal Encoder index value (ONLY available on DSC2P and DSC2V)
M43 Analog encoder amplitude signal
Analog encoder sine
2
+ cosine
2
Controller For monitorings M40, M41 and M42 For monitoring M43
DSC2P
DSC2V
DSCDP
DSCDM
DSCDL
Value Position controller
X
0.83 DSC2P and DSC2V
0.74 DSCDP, DSCDL and DSCDM
Encoder value [V
ˆ
]
Encoder value [inc]
4096 x
⋅
------------------------------------------
=
M43 [V
ˆ
]
M43 inc[]
2048 x
⋅
-------------------------
=
Encoder value [V
ˆ
]
Encoder value [inc]
65536 x
⋅
------------------------------------------
=
M43 [V
ˆ
]
M43 inc[]
32768 x
⋅
-------------------------
=

Etel DSC2P Specifications

General

Brand	Etel
Model	DSC2P
Category	Controller
Language	English