Curtis Instruments 1351 User Manual

3 — PROGRAMMABLE PARAMETERS
Curtis Model 1351 – December 2018
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pg. 50
Encoder Input
e 1351 can connect and process two dierent position encoders. ey can be either Quadrature,
Sine/Cosine, or Sawtooth encoders (sensors). The two encoders can be a different type. Each
encoder requires its own independent wiring input and setup parameters. Both provide independent
0-360 position, Total Rotations and Speed measurement. See Chapter 2, Encoder Inputs, for more
information on these encoder/sensor types and 1351 usage.
The type of encoder wired to each 1351 input must be selected and setup using the following
parameters. e specic encoder parameter menus are context enabled, thus they are visible in
CSS/1313 HHP based upon the “Type” selection.
INPUTS — ENCODER INPUT
PARAMETER ALLOWABLE RANGE DEFAULT DESCRIPTION
RPM
Encoder_X_RPM
Variable’s CAN Index by RPM:
1 = 0x3410 0x00
2 = 0x3412 0x00
0 – 12,000 rpm
−2147483648 –
2147483647
−2147483648 –
2147483647
{i.e., -(2
31
) – [(2
31
)-1]}
Read Only Encoder X’s speed in revolutions per minute (rpm).
Motor speed based only on encoder channel A pulses
X = 1 or 2 for the RPM: Encoder_X_RPM
Positive RPM = Forward rotation
Negative RPM = Reverse rotation
See the Direction parameter, below.
Type
Encoder_X_Type
Parameter’s CAN Index by Type:
1 = 0x3220 0x00
2 = 0x3230 0x00
None
Quadrature
Sin/Cos
Sawtooth
0
1
2
3
None
0
Set this parameter to the type of position feedback device
connected to the input pins.
The selections is Enumeration CSS/1313:
None = 0
Quadrature = 1
Sin/Cos = 2
Sawtooth = 3
X = 1 or 2 for the Type: Encoder_X_Type
Note, When an encoder is used for these inputs, the high-
speed input options are not available, as described in the
previous High Speed Digital Inputs section.
Direction
Encoder_X_Dir
Parameter’s CAN Index by Direction:
1 = 0x3222 0x00
2 = 0x3232 0x00
A before B
B before A
0
1
A before B
0
Congure the positive direction of motion.
X = 1 or 2 for the Type: Encoder_X_Dir
The selection is Enumeration CSS/1313:
The rising edge on A before B is forward (positive rotation) = 0
The rising edge of B before A is forward (positive rotation) = 1
Quadrature Encoder This menu is Context Enabled: It is visible when Type = Quadrature Encoder
Pull Up Enable
Encoder_1_Pull_Up
0x322D 0x00
Note, Encoder 2 VCL name:
Switch_13_14_Open_State
0x31FC 0x00
0 – 1/
Pull Down – Pull Up
0 – 1
0 Enables the encoder channels A and B 2k pull-up resistors
to +5V. Used to interface with encoders with open collector
outputs.
0 = Off = Pull Down (not pulled up to +5V)
1 = On = Pull Up (pulled-up to +5V w/2k pull-up resistor)
Steps
Encoder_X_PPR
Parameter’s CAN Index by Steps:
1 = 0x3221 0x00
2 = 0x3231 0x00
12 – 1024
12 - 1024
60 Sets the number of encoder pulses per revolution. This
parameter must be set to match the quadrature encoder.
X = 1 or 2 for the Type: Encoder_X_PPR

Curtis Instruments 1351 Specifications

General

Brand	Curtis Instruments
Model	1351
Category	I/O Systems
Language	English