Rockwell Automation 1395 Digital DC Drive FRN 5-10.10/9.30 - Manual (Page 192)

Chapter 7
Programming Parameters
7-26
Table 7.B
Logic Command Word Bits 0,1,2
0
0
0
0
1
1
1
1
2 1 0
0
0
1
1
0
0
1
1 0
1
0
1
0
1
0
1
Definition
External Speed Reference
Preset Speed 1
Preset Speed 2
Preset Speed 3
Preset Speed 4
Preset Speed 5
MOP Forward Speed
MOP Reverse Speed
Selected Parameters
154
633
634
635
636
637
MOP
MOP
External speed reference indicates Parameters 153 and 154 will be the
velocity reference.
Preset speeds 1 to 5 indicate Parameters 633 to 637 respectively, will
be the selected velocity reference.
MOP forward speed selects the positive MOP command velocity.
MOP reverse speed selects the negative MOP command velocity. For
the MOP function, the start input will cause the MOP forward/reverse
speed to be set to the MOP minimum speed (Parameter 650)
MOP increment (Bit 3): A 1 -bit field when set to 1, will cause the
MOP to increase speed by the rate selected in the MOP rate bits (6,7)
in the logic command. The MOP command velocity will continue to
increase until this bit is cleared or a speed limit is reached. This limit
can be the MOP Min Speed (Parameter 650) or the reverse speed
limit (Parameter 607).
Ramp Disable (Bit 5) : A 1-bit field that will disable the ramp
function in the Drive when set to 1. The ramp function limits the rate
of change of velocity command, or acceleration/deceleration, to the
rate set by the Accel Time and Decel Time parameters (Parameters
651 and 652). The ramp velocity reference (Parameter 103) becomes
the same value as the Pre Ramp Velocity reference (Parameter 102)
when the ramp disable is set to 1. Ramp disable will also cause the
MOP ramp to be bypassed when performing a stop function with a
MOP reference selected.
MOP rate 1, 2 (Bits 6,7): A 2-bit field, that will specify the accel and
decel rates to be used by the MOP controller. There are four possible
rates. Accel and Decel rates are separately adjustable by Parameters
641 to 648. The Table for this two bit field is shown in Table 7.C.