Rockwell Automation 2LW3000 LonWorks Communication Option Module for VTAC 7 Drives - Manual (Page 56)

7-4 LonWorks Module for VTAC 7 Drives
Drive Speed Setpoint
Definition: network input SNVT_switch nviDrvSpeedStpt.
Explanation: Provides a low-resolution speed setpoint. When
nviDrvSpeedStpt.State is set to zero, the drive stops based on
the stop mode defined by drive parameter P.025.
Important: Requested speed will not be greater than the value
defined by nciMaxSpeed or less than the value
defined by nciMinSpeed
Range:
Default: Auto (state = 0xFF). This value will be adapted at power up. This
variable may use the Receive Heartbeat function if the Receive
Heartbeat function is set up for use. The actual value of drive
speed also depends on nviDrvSpeedScale.
Scaling: See section 8.4.
Speed Setpoint Scaling
Definition: network input SNVT_lev_percent nviDrvSpeedScale;
Explanation: Provides scaling for nviDrvSpdStpt. For example, if
nviDrvSpeedStpt value is 100% and nviDrvSpeedScale value is
-150%, then actual speed setpoint value is -150% (meaning
reverse 1.5 times nominal speed). The requested speed will not
be greater than the value defined by nciMaxSpeed or less than
the value defined by nciMinSpeed.
Range: -163.84 to 163.83%
Default: Defined by nciDrvSpeedScale.
Scaling: See section 8.4.
State Percent Value Requested Speed
0 N/A Stopped
1 0% 0%
1 0.5% to 100.0% 0.5 to 100.0%
1 100.0% 100.0%
0xFF N/A Auto (Invalid)