Rockwell Automation 1395 Digital DC Drive FRN 5-10.10/9.30 - Manual (Page 191)

Chapter 7
Programming Parameters
7-25
Parameter 150 – Logic Command 1 [Logic Cmd 1]
Internal units : None
Programming Terminal units: Bit Field
Description : This is a word of fast data used to control drive logic
operation. The information is contained in binary (boolean) form. If
a bit is set, the associated function is enabled, otherwise the function
is disabled (inactive).
The functions contained in Logic Command 1 are similar to those in
Logic Command 2 and 3. The software checks the state of this signal
in Logic Command 3. It then checks to see if the Command Enable
Signal is present in Logic CMD 1 before making the selection of
Logic Command 1 or 2. In Logic Command 2, the command enable
bit is ignored. Regardless of the selected Logic Command word (1, 2,
or 3), a Stop request from any Logic Command word will be honored.
The bits in the Logic Command words are defined as follows:
Run Reference Select A
Run Reference Select B
Run Reference Select C
MOP Increment
MOP Decrement
Ramp Disable
MOP Rate 1
MOP Rate 2
Command Enable
Jog 2
Jog 1
Normal Stop
Start
Close Contactor
Clear Fault
Process Trim Enable
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit #
DEFINITIONS
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
In addition to the basic bit definitions provided above, several bits are
used together for the purpose of selection. Bits 0,1,2 are grouped to
determine which speed reference is used for input to the velocity
control. Bits 6 and 7 are used to determine which MOP Accel/Decel
rates are in effect. Bit usage is defined in tables 7.B and 7.C.
Run Reference Select (bits 0,1,2) : These three bits select the velocity
reference for the motor. The Start input in the logic command will
close the contactor and the drive will run the motor at the velocity
selected by these run reference select bits. For each run reference
select combination, there corresponds a speed reference parameter.