Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX - Manual (Page 10)

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links
A link is a software connection between two parameters that lets you transfer data from one parameter to the
other. The parameter that provides the information is called the source parameter. The parameter that receives
the data is called the destination parameter.
The 1336 IMPACT Drive lets you make up to 20 links. You can only program links when the drive is not running.
Links are stored in EE and established at power up and/or system reset.
There are two types of links:
• User link — A user link is a software connection that you establish. You can change these links as needed.
• Default link — A default link is a software connection between two parameters that is made when the drive is
initialized. You can change the default links as needed after initialization. Default links are sometimes called
pre-defined links.
The default links are as follows:
The links are made from the destination side, and the data transfer occurs in the opposite direction.
For additional information about links, refer to Chapter 6, Starting Up Your System.
maintained start
With a maintained start, the drive runs as long as you are commanding a start. The drive stops when you
remove the start input (for example, if you remove your finger from the start button). This type of start is also
referred to as an unlatched start.
mask parameters
Through the SCANport interface, up to six different SCANport adapters and the L Option board can control the
1336 IMPACT drive. With this flexibility, conflicts are inherent. The 1336 IMPACT drive lets you make functional
masks. At each port, you can selectively lock out functions such as start, jog, and drive direction as well as
many fault interlocks by using mask parameters to select the allowable functions for each port.
momentary start
With a momentary start, the drive continues running until a stop is commanded, even after you remove the start
input. This type of start is also referred to as a latched start.
non-volatile memory
Non-volatile memory is data memory in the drive that retains the values of all data even when power is
disconnected from the drive. An EE (Electrically Erasable) chip is used for the non-volatile memory to store the
drive parameters, links, and user text.
owner parameters
The 1336 IMPACT drive lets one or more control devices or adapters own start, jog, direction, and other control
functions. To avoid conflict, some owners are exclusive. For example, only one device can issue a forward
direction speed command. Others have multiple control. For example, all devices can jog the drive. Devices
can, for example, jog the drive in the forward direction only if the jog mask parameter allows for it.
parameter A parameter is a memory location used to store drive data. Each parameter is assigned a number and a name.
per-unit numbering
Per-unit numbering is a numbering system that defines a specific numeric value as representing 100% of a
particular quantity being measured. The number 4096 is used in many places in the drive to represent one per
unit.
precharge Precharge limits the current into the drive when the incoming power is first applied.
radians per second Radians per second are the units used to measure bandwidth. ω = 2πf, where f is Hz or cycles per second.
ridethrough
Ridethrough automatically turns off the drive and starts a precharge when a power interrupt occurs. If the
power returns within two seconds, the drive automatically starts.
SCANport device
A SCANport device is a generic term that is used to refer to any device that you can connect to the SCANport
communications network.
source parameter (read-only
parameters)
Source parameters provide realtime information that is available for other devices to use. These devices can
include PLC controllers, operator interface devices, and programming terminals. throughout this manual, the
following symbol indicates a source parameter:
This term: Has the following definition:
Source To Destination
SP An In1 Value 134 To 29 Speed Ref 1
An In 1 Value 96 To 31 Speed Ref 2
Motor Speed 81 To 105 An Out 1 Value
Motor Power 90 To 108 An Out 2 Value
Motor Speed 81 To 139 SP An Output