36 Direction Control
4. Controlled by the Network
This configuration is used when it is desired to control the digital outputs over
network communications instead of a drive related function. In this case,
[Digital Out x Sel] is set to “Param Cntl,” in which case the bit value of [DigOut
Setpt], parameter 379 energizes the respective digital output. Bit 0 corresponds
to output 1. Bit 1 corresponds to output 2, and so on. To complete the
configuration for control over a network, a datalink must be established with
[Digital Out Setpt], parameter 379.
Example
Digital Output 2 controlled by Data In B1.
Setup
− [Data In B1], parameter 302 = 379 ([Dig Out Setpt] as the Data In target)
− [Digital Out2 Sel], parameter 384 = 30 “Param Cntl”
When Bit 1 of Data In B1 =1 Digital Out 2 will be energized.
Direction Control Direction control of the drive is an exclusive ownership function. Only one device
can command direction at a time. Direction is defined as the forward (+) or reverse
(–) control of the drive output frequency, not motor rotation
. Motor wiring and
phasing determines its CW or CCW rotation. Direction of the drive is controlled in
one of four ways:
1. 2-Wire digital input selection such as Run Forward or Run Reverse.
2. 3-Wire digital input selection such as Forward/Reverse, Forward or Reverse.
3. Control Word bit manipulation from a DPI device such as a communications
interface. Bits 4 & 5 control direction. Refer to the Logic Command Word
information in Appendix A of the PowerFlex 70 or 700 User Manual.
4. The sign (+/-) of a reference signal, such as a bipolar analog input or the 16th bit
of a network reference.
Direction commands by various devices can be controlled using the [Direction
Mask]. See page 49
for details on masks.
Refer to "Digital Inputs" on page 26
and "Analog Inputs" on page 4 for more detail
on the configuration and operating rules for direction control.
70EC
700VC
700H
✔✔
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