Rockwell-automation 20B PowerFlex 70, PowerFlex 700 Reference Manual Manual de usuario descargar pdf (Pagina 114)

MOP

114 Rockwell Automation Publication PFLEX-RM001H-EN-P - June 2013

Direction Mask

This “masks out” the reverse function from all adapters except Adapter 2, making

the local HIM (Adapter 1) REV button inoperable. Also see Owners

page 125.

MOP The Motor Operated Pot (MOP) function is one of the sources for the frequency

reference. The MOP function uses digital inputs to increment or decrement the

Speed reference at a programmed rate.

The MOP has three components:

• [MOP Rate] parameter

• [Save MOP Ref ] parameter

• [MOP Frequency] parameter

MOP increment input

MOP decrement input

The MOP reference rate is defined in [MOP rate]. The MOP function is defined

graphically below

MOP rate is defined in Hz/sec. The MOP reference will increase/decrease

linearly at that rate as long as the MOP inc or dec is asserted via TB or DPI port

(the MOP inputs are treated as level sensitive).

Both the MOP inc and dec will use the same rate (i.e. they can not be separately

configured). The MOP rate is the rate of change of the MOP reference. The

selected active MOP reference still feeds the ramp function to arrive at the

present commanded speed/frequency (eg. is still based on the accel/decel rates).

Asserting both MOP inc and dec inputs simultaneously will result in no change

to the MOP reference.

[Save MOP Ref ] is a packed boolean parameter with two bits used as follows:

Bit 0

0 = Don’t save MOP reference on power-down (default)

1 = Save MOP reference on power-down

00000100

Adapter # X6543210

MOP dec

MOP inc

MOP reference

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Rockwell-automation 20B PowerFlex 70, PowerFlex 700 Reference Manual Manual de usuario Pagina 114