ABB ACSM1 - Page 257

Parameters and firmware blocks
257
(7) FEN-31 HTL Communication active. Module type: FEN-31 HTL Encoder Interface.
Input: HTL encoder input (X82). See parameter group 93.
90.02 ENCODER 2 SEL FW block: ENCODER (see above)
Activates the communication to the optional encoder/resolver interface 2.
For selections, see parameter 90.01 ENCODER 1 SEL.
Note: The counting of full shaft revolutions is not supported for encoder 2.
90.03 EMUL MODE SEL FW block: ENCODER (see above)
Enables the encoder emulation and selects the position value and the TTL output used in the
emulation process.
In encoder emulation, a calculated position difference is transformed to a corresponding number of
TTL pulses to be transmitted via the TTL output. The position difference is the difference between the
latest and the previous position values.
The position value used in emulation can be either a position determined by the drive software or
a position measured by an encoder. If drive software position is used, the source for the used position
is selected by parameter 93.22 EMUL POS REF. Because the software causes a delay, it is
recommended that actual position is always taken from an encoder. Drive software is recommended
to be used only with position reference emulation.
Encoder emulation can be used to increase or decrease the pulse number when TTL encoder data is
transmitted via the TTL output, eg, to another drive. If the pulse number requires no alternation, use
encoder echo for data transformation. See parameter 90.04 TTL ECHO SEL. Note: If encoder
emulation and echo are enabled for the same FEN-xx TTL output, the emulation overrides the echo.
If an encoder input is selected as emulation source, the corresponding selection must be activated
either with parameter 90.01 ENCODER 1 SEL or 90.02 ENCODER 2 SEL.
The TTL encoder pulse number used in emulation must be defined by parameter 93.21 EMUL PULSE
NR. See parameter group 93.
(0) Disabled Emulation disabled.
(1) FEN-01 SWref Module type: FEN-01 TTL Encoder interface Module. Emulation: Drive
software position (source selected by par. 93.22 EMUL POS REF) is
emulated to FEN-01 TTL output.
(2) FEN-01 TTL+ Module type: FEN-01 TTL Encoder interface Module. Emulation: FEN-
01 TTL encoder input (X32) position is emulated to FEN-01 TTL
output.
(3) FEN-01 TTL Module type: FEN-01 TTL Encoder interface Module. Emulation: FEN-
01 TTL encoder input (X31) position is emulated to FEN-01 TTL
output.
(4) FEN-11 SWref Module type: FEN-11 Absolute Encoder Interface. Emulation: Drive
software position (source selected by par. 93.22 EMUL POS REF) is
emulated to FEN-11 TTL output.
(5) FEN-11 ABS Module type: FEN-11 Absolute Encoder Interface. Emulation: FEN-11
absolute encoder input (X42) position is emulated to FEN-11 TTL
output. Emulation is not possible with SSI or EnDat in the Continuous
mode (parameters 91.25 and 91.30).
(6) FEN-11 TTL Module type: FEN-11 Absolute Encoder Interface. Emulation: FEN-11
TTL encoder input (X41) position is emulated to FEN-11 TTL output.