ABB ACS850 - Absol Enc Conf

Parameters 249
Warning The drive generates an ENCODER 1/2 CABLE warning. This
is the recommended setting if the maximum pulse frequency
of sine/cosine incremental signals exceeds 100 kHz; at high
frequencies, the signals may attenuate enough to invoke the
function. The maximum pulse frequency can be calculated as
follows:
2
90.10 Enc par refresh Setting this parameter to 1 forces a reconfiguration of the
FEN-xx interfaces, which is needed for any parameter
changes in groups 90…93 to take effect.
Note: The parameter cannot be changed while the drive is
running.
Done Reconfiguration done. 0
Configure Reconfigure. The value will automatically revert to Done.1
91
91 Absol enc conf
Absolute encoder configuration. See also section Encoder
support on page 63.
91.01 Sine cosine nr Defines the number of sine/cosine wave cycles within one
revolution.
Note: This parameter does not need to be set when EnDat or
SSI encoders are used in continuous mode. See parameter
91.25 SSI mode / 91.30 Endat mode.
0…65535 Number of sine/cosine wave cycles. 1 = 1
91.02 Abs enc interf Selects the source for the encoder absolute position.
None Not selected. 0
Commut sig Commutation signals. 1
EnDat Serial interface: EnDat encoder. 2
Hiperface Serial interface: HIPERFACE encoder. 3
SSI Serial interface: SSI encoder. 4
Tamag. 17/33b Serial interface: Tamagawa 17/33-bit encoder. 5
91.03 Rev count bits Defines the number of bits used in revolution count with
multiturn encoders. Used when parameter 91.02 Abs enc
interf is set to EnDat, Hiperface or SSI. When parameter
91.02 Abs enc interf is set to Tamag. 17/33b, setting this
parameter to a non-zero value activates multiturn data
requesting.
0…32 Number of bits used in revolution count. For example, 4096
revolutions corresponds to 12 bits.
1 = 1
91.04 Pos data bits Defines the number of bits used within one revolution when
parameter 91.02 Abs enc interf is set to EnDat, Hiperface or
SSI. When parameter 91.02 Abs enc interf is set to Tama g.
17/33b, this parameter is internally set to 17.
0…32 Number of bits. For example, 32768 positions per revolution
corresponds to 15 bits.
1 = 1
91.05 Refmark ena Enables the encoder zero pulse for the absolute encoder
input (X42) of an FEN-11 module (if present). Zero pulse can
be used for position latching.
Note: With serial interfaces (i.e. when parameter 91.02 Abs
enc interf setting is EnDat, Hiperface, SSI or Tamag. 17/33b),
zero pulse must be disabled.
No. Name/Value Description FbEq
Max. pulse frequency
Pulses per rev. Max. speed in rpm×
60
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