ElmoMC SimplIQ Command Reference User Manual

Page 33

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CA[34] Configure

resolver, analog halls or Absolute Coarse/Fine Encoder bits in the

range of 10..16. The resolver / analog halls readout resolution is 2

16-CA[34]

bits per resolver or analog halls cycle. For example, if CA[34]=4 the
feedback reads 4096 bits per cycle. If the feedback has one pole pair,
this will also be the bit count per mechanical revolution. If the feedback
has 2 pole pairs, there will be 8092 counts/mechanical revolution and
so on.

Potentiometer feedback type:

Configure scale factor for analog (potentiometer) signal reading. Scale
is needed to reduce position ripple.
The potentiometer measured signal is arithmetically right shifted by
the value contained in CA[34] setting.
This means that the actual max value is:
CA[18]/2^CA[34].

CA[34] is in range [0…6]. Default value is zero.

Table 3-11: - CA - Resolver Parameters

The following parameters are required for Tachometer operation:

CA[35]

The value of the Tachometer offset in counts/sec.

CA[36]

The value of the Tachometer gain (from the Tachometer’s data sheet) in
Volts/kRPM.

Table 3-12: - CA - Tachometer Parameters

Attributes:

Type: Parameter,

Integer

Source:

Program, RS-232, CANopen

Restrictions: MO=0
Default values: CA[1]=CA[2]=CA[3]=1,CA[4]=3,

CA[5]=2,

CA[6]=1, CA[13]=32768, CA[15]=4, CA[16]=1,

CA[17]=1,CA[18]=4096, CA[19]=2, CA[20]=1,

CA[21]=1, CA[22]=2, CA[24]=5, CA[25]=1,

CA[26]=20,

CA[29]=1

All other CA parameters are 0 (RS),

Non-volatile
Range:

As defined in the previous tables

Unit modes: All
Activation: Immediate

Notes:

ƒ

The CA parameters are usually set automatically by the Composer program. Avoid
setting the CA[N] parameters manually unless you are sure of what you are doing.

ƒ

Unused indices are reserved for compatibility with other drive models.

ƒ

CA[7], CA[35] and CA[36] are floated

See

also:

Reference

chapter

in

the

SimplIQ Software Manual:

MO

,

UM

Chapter 9, ”Commutation”

SimplIQ

Command Reference Manual

Alphabetical Listing

MAN-SIMCR (Ver. 4.5)

3-20

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