Rockwell Automation 1336F PLUS II User Manual - Firmware 1.xxx-6.xxx - Manual (Page 134)

6–52 Programming
Encoder Feedback
[Encoder Counts]
Displays the scaled encoder count value. The value is in-
cremented in the forward direction and decremented in the
reverse direction. Requires a quadrature (dual channel)
encoder and a value in [Enc Count Scale].
Parameter Number 283
Parameter Type Read and Write
Display Units / Drive Units 1 Count / Counts
Factory Default 0
Minimum Value –32767
Maximum Value +32767
[Enc Count Scale]
Sets the scale factor for the incoming encoder pulse count.
Parameter Number 282
Parameter Type Read and Write
Display Units / Drive Units
Factory Default
1000
Minimum Value 1
Maximum Value 4096
[Encoder Loss Sel]
Selects the drive action when a missing or incorrect en-
coder signal is detected.
Important: Encoder loss detection requires the use of a
1336-L7E, L8E or L9E Interface Option Board and
quadrature (dual channel) encoder wired differentially
(see page
2–30 ). In addition, selection of “Encoder” in
[Freq Select 1/2], [PI Reference], [PI Feedback] or “En-
coder Fdbk” in [Speed Control] must be made.
If a 1336-L4E, L5E or L6E board is used, a pulse (single
channel) encoder is used or a dual channel encoder is
wired single-ended, this feature will not operate.
Parameter Number 284
Parameter Type Read and Write
Factory Default “Disabled”
Units Display Drive
“Disable” 0 After 200ms of encoder loss, a
warning will be issued.
“Enable” 1 After 200ms of encoder loss, an
alarm and an F60 fault will be
issued.
[Encoder Freq]
This parameter displays the frequency command present
at encoder input terminals of TB3. This value is displayed
whether or not this is the active frequency command.
Parameter Number 63
Parameter Type Read Only
Display Units / Drive Units 0.01 Hertz / 32767 = Maximum Freq
Factory Default None
Minimum Value –400.00 Hz
Maximum Value +400.00 Hz
[Max Enc Counts]
Sets the trip point for the “Enc Cnt Max” alarm. The alarm
is high (1) when [Encoder Counts] has exceeded [Max Enc
Counts].
Parameter Number 328
Parameter Type Read and Write
Display Units / Drive Units 1 Count /Counts
Factory Default 0
Minimum Value 0
Maximum Value 32767
ATTENTION: To guard against possible machine damage and/or personal
injury, be aware that the maximum encoder count value in either direction is
±
32767. No roll-over will occur and the value will be frozen at this maximum
value until manually reset or decremented below maximum (via opposite
counts).
!
[Encoder Counts] =
Number of Incoming Pulses
[Enc Count Scale]
Frequency
Displayed
Incoming Encoder Pulse Rate
[Encoder PPR]
=