Fuji Electric LONWORKS OPC-LNW, Инструкция по эксплуатации

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7.4 VSD Object Input Network Variables
(1) nv1 nviDrvSpeedStpt
This NV controls the inverter's run/stop and frequency commands via the LONWORKS network.
- Variable type: SNVT_switch
Table 7-6 Operation of nviDrvSpeedStpt
state value Operation
0 NA Run command OFF
1 0.0 (%) Zero speed command (No torque generated)
1 0.5 to 100.0 (%) Run at 0.5 to 100.0% frequency
-1 (0xFF) NA Invalid
- Default setting: state = -1, value = 0
The interface card calculates the frequency command value with nviDrvSpeedStpt.value,
nviDrvSpeedScale and SCPT_nomFreq.
Frequency command (Hz) = nviDrvSpeedStpt.value (%) x nviDrvSpeedScale (%) x SCPT_nomFreq (Hz)
Each time any one of the three terms in the above equation is entered, the interface card calculates the
frequency command again and overwrites the previous value with new one, regardless of whether the
inverter is running or on halt. If state = 0xFF, however, no recalculation takes place even with any input.
The frequency command can be specified with this NV and nv9 nviFrecmd. If both of these NVs
are specified, the last one takes effect on the inverter (Last command has priority).
To enable the inverter's run/stop and frequency commands via the LONWORKS network, either of
the following settings is required.
UCPT_LinkFunc = 3 or inverter's function code y98 = 3
- CPs for control of the affected network bandwidth: SCPT_maxRcvTime
(2) nv2 nviDrvSpeedScale
This NV specifies the motor rotational direction and frequency command.
- Variable type: SNVT_lev_percent
- Data setting range: -163.840 to 163.830% (0.005% resolution)
If entering 163.835% (invalid), for example, the interface card ignores the entry and
the inverter runs with the previous value.
- Default setting: Value specified by SCPT_defScale
- CPs for control of the affected network bandwidth: SCPT_maxRcvTime