Feedback Device Parameter; Position Feedback Device - Curtis 1222 Manual

3 — PROGRAMMABLE PARAMETERS: Position Feedback
ALLOWABLE
PARAMETER

Position Feedback Device

0x4005 0x00
Supervision Feedback Device 0 – 4
0x40E5 0x00
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2 9 J A N U A R Y 2 0 1 3 D R A F T

FEEDBACK DEVICE PARAMETER

RANGE
n
•
0 – 3 These parameters define which inputs will be used to determine the primary
0 – 3 and supervisory steer position feedback.
n
•
0 = Steer pot position feedback, where Analog 5 and Analog 6 inputs
0 – 4
required.
It is best practice to wire the primary and supervisory input sig-
nals in an "X" configuration (0–5V and 5V–0). However, the 1222
has independent maps and will support redundant signals that
move in the same direction.
1 = Encoder position feedback, where Encoder 3 and Encoder 4
Parameters
DESCRIPTION
are connected to two potentiometers as redundant feedback pots.
When analog position feedback is used, two channels are
NAME PIN FUNCTION
Analog 5 16 Primary analog feedback
Analog 6 17 Supervisory analog feedback
are connected to two quadrature encoders as redundant inputs.
When encoder position feedback is used, two quadrature
encoders are required. In the table below, "+" and "-" indicate
encoder phase differences ("-" being some amount of phase shift
from "+"). This means that the primary and supervisory encoders
do not have to have the same alignment.
NAME PIN FUNCTION
Encoder 3A 31 Primary quadrature encoder feedback A
Encoder 3B 32 Primary quadrature encoder feedback B
Encoder 4A 26 Supervisory quadrature encoder feedback A
Encoder 4B 27 Supervisory quadrature encoder feedback B
Curtis 1222 Manual,
os 15