ABB ACL30, Руководство пользователя

Страница: 270 / 360

270 Parameters
90.02 EMUL MODE SEL Enables 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 the drive
software position is used, the source for the used
position is selected by parameter
93.08 EMUL POS
REF. Because the software causes a delay, it is
recommended that the 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, for example, to
another drive. If the pulse number requires no
alternation, use encoder echo for data
transformation. See parameter
90.03 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 the emulation
source, the corresponding selection must be
activated with parameter
90.01 ENCODER SEL.
The TTL encoder pulse number used in emulation
must be defined by parameter
93.07 EMUL PULSE
NR. See parameter group 93 PULSE ENC CONF .
Disabled /
enum
Disabled Emulation disabled. 0
FEN-01 SWref Module type: FEN-01 TTL Encoder interface Module.
Emulation: Drive software position (source selected
by par.
93.08 EMUL POS REF) is emulated to FEN-
01 TTL output.
1
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. 2
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. 3
No. Bit/Name/Value/
Range Description Def/Type
FbEq
(16b/32b)