Rockwell Automation 20D PowerFlex 700S with Phase I Control Reference Manual - Manual (Page 77)

Rockwell Automation Publication PFLEX-RM002D-EN-E - August 2013 77
Detail Drive Configuration and Operation Chapter 1
Output Power (Parameter 311)
This parameter displays the output kW of the drive. Motor Power is the
calculated product of the torque reference and motor speed feedback. A 125 ms
filter is applied to this result. Positive values indicate motoring power; negative
values indicate regenerative power. The output power is a calculated value and
tends to be inaccurate at lower speeds. It is not recommended for use as a process
variable to control a process.
Output Voltage (Parameter 307)
Displays RMS line-to-line fundamental output voltage at the drive output
terminals. This data is averaged and updated every 50 ms. The actual output
voltage may be different than that determined by the sensorless vector or V/Hz
algorithms because it may be modified by features such as the Auto-Economizer.
Overspeed Limit The absolute overspeed limit parameter, parameter 335 [Abs OverSpd Lim], is
an adjustable setting. This sets a limit tolerance below parameter 30 [Rev Speed
Lim] and above parameter 31 [Fwd Speed Lim], that is allowable. This can be
used as a safe working speed limit.
Example 1: Speed reference is set to equal parameter 31 [Fwd Speed Lim]. Based
on tuning of the drive, the speed could overshoot the commanded speed. If
parameter 335 [Abs OverSpd Lim] is set equal to the forward speed limit and an
overshoot is speed occurs, the drive will fault on an absolute overspeed.
Example 2: Drive is configured as a torque follower. If the mechanical
connection to the load is severed, the torque command to the drive will probably
be greater than the motor unloaded will require to maintain the system speed.
This will cause the motor speed to increase until the torque command is met.
Setting parameter 335 [Abs OverSpd Lim] to the safe motor speed will cause the
fault to occur when the motor speed increase beyond this limit.
Owners An owner is a parameter that contains one bit for each of the possible adapters.
The bits are set high (value of 1) when its adapter is currently issuing that
command, and set low when its adapter is not issuing that command.
Table 4 - Owner Parameters and Functions
Parameter Function
[Stop Owner] Indicates the adapters that are presently issuing a valid stop command.
[Start Owner] Indicates the adapters that are presently issuing a valid start command.
[Jog Owner] Indicates the adapters that are presently issuing a valid jog command.
[Direction Owner] Indicates the adapter that currently has exclusive control of direction changes.
[Fault Clr Owner] Indicates the adapters that are presently issuing a valid start command.