Toshiba GX9 - Page 118

106 GX9 ASD Installation and Operation Manual
VI/II Reference Point 1
Program Frequency Speed Reference Setpoints
This parameter is used to set the gain and bias of the isolated VI/II terminal
when the VI/II terminal is used as the control input while operating in the
Speed Control mode or the Torque Control mode.
This parameter sets the VI/II level that is associated with the VI/II Point 1
Frequency setting when operating in the Speed control mode or is associated
with the VI/II Input Point 1 Torque setting when operating in the Torque
Control mode.
The bias and gain of the VI/II terminal may be trimmed at F470 and F471,
respectively.
VI/II Speed Control Setup
Perform the following setup to allow the system to receive Speed control input
at the VI/II terminal:
• Connect the input control current or voltage to the II input or the VI input,
respectively.
•Program Fundamental Standard Mode Selection Frequency Mode
1 VI/II.
•Program Fundamental Standard Mode Selection Command Mode
Set VI/II Input Point 1 Frequency (F202).
•Set VI/II Reference Point 1 (F201) — the input analog signal level that
corresponds to the frequency setting at VI/II Point 1 Frequency.
•Set VI/II Input Point 2 Frequency (F204).
•Set VI/II Reference Point 2 (F203) — the input analog signal level that
corresponds to the frequency setting at VI/II Point 2 Frequency.
•Provide a Run command (F and/or R).
Once set, as the VI/II voltage or current changes, the output frequency of the
ASD will vary in accordance with the above settings.
This parameter value is entered as 0% to 100% of the VI/II signal range.
The VI/II terminal is commonly used for a 4 – 20 mA current loop signal
where 4 mA equals 20% of a 20 mA signal. Set this parameter to 20% for 4 –
20 mA current loop signal applications.
Note: When using the isolated VI/II terminal the IICC terminal must
be used as the return (negative) connection.
Direct Access Number — F201
Parameter Type — Numerical
Factory Default — 20.00
Changeable During Run — Yes
Minimum — 0.00
Maximum — 100.00
Units — %
Frequency Settings
VI/II Input Point 1 Frequency
Program Frequency Speed Reference Setpoints
This parameter is used to set the gain and bias of the VI/II terminal when the
VI/II terminal is used as the control input while operating in the Speed Control
mode.
This parameter sets VI/II Point 1 Frequency and is the frequency that is
associated with the setting of VI/II Reference Point 1 when operating in the
Speed Control mode.
See VI/II Reference Point 1 (F201) for more information on this setting.
Direct Access Number — F202
Parameter Type — Numerical
Factory Default — 0.0
Changeable During Run — Yes
Minimum — 0.0
Maximum — Max. Freq. (F011)
Units — Hz
I
/II
F201 F202