ETA Smart Arms: Encoder Options

About Encoder Accuracy

There are many factors that affect fastener location accuracy. Some of the common factors are bit or socket extension wiggle, tool spindle compliance and spring loaded spindle collapse, component dimensional consistency, accuracy of the component location in the fixture, and of course, repeatability and accuracy of the smart-arm encoders. These factors are not usually critical unless the fastener locations are very close together (almost touching). When all of the physical location issues are optimized, then typically

your controls should be able to read our encoder outputs to differentiate between fasteners within approximately 1/8” (3mm).

ENCODER IDENTIFICATION EL-815-UV-__SA	GCSA	AVSA	AMSA	IOSA	XXSA
SMART ARM MODEL CONFIGURATION EXAMPLE	EL815-UV-GCSA	EL815-UV-AVSA	EL815-UV-AMSA	EL815-UV-IOSA	EL815-UV-XXSA
OUTPUT	Parallel Gray Code NPN open Collector Negative Logic (active low)	Analog 0.1 to 10.0 VDC	Analog 4 to 20 mA	IO-Link Spec V1.1 to IEC 61131-9, Smart Sensor Profile. Programmable Parameters for Zero point offset, averaging and rotational direction.	N/A
ENCODER CONNECTIONS PER X/Y SMART-ARM	[2] cables 55" (140 cm) long with flying leads having 13 conductors each + shield	[2] short cables (150 mm long) with M12, 4 Pin Male Connectors	[2] short cables (150 mm long) with M12, 4 Pin Male Connectors	[2] short cables (150 mm long) with M12, 4 Pin Male Connectors	N/A
MECHANICAL DESCRIPTION	Mechanical rotary encoders coupled to smart-arm shafts by an alignment coupler. Long Life	Hall Effect - Encoder. No moving sensor parts. Mechanically Decoupled from Tool Arm Shafts (No shaft coupler). Unlimited life.	Hall Effect - Encoder. No moving sensor parts. Mechanically Decoupled from Tool Arm Shafts (No shaft coupler). Unlimited life.	Hall Effect - Encoder. No moving sensor parts. Mechanically Decoupled from Tool Arm Shafts (No shaft coupler). Unlimited life.	Encoder Ready Arm with 8mm Ø x .375" L shaft extensions and 10-32 tapped holes for your bracket and encoders.
PLC I/O REQUIREMENT	11 inputs per encoder	1 input per encoder	1 input per encoder	1 input per encoder	N/A
ABSOLUTE RESOLUTION	11 bit (2048)	12 bit (4096)	12 bit (4096)	14 bit (16,384)	N/A
REPEATABILITY (Each Encoder)	0.09⁰	0.10⁰	0.10⁰	0.10⁰	N/A
MEASURING RANGE	360⁰	360⁰	360⁰	360⁰	N/A
INPUT SUPPLY VOLTAGE (24 VDC Nominal)	11 - 26 VDC	18 - 30 VDC	18 - 30 VDC	18 - 30 VDC	N/A
INPUT SUPPLY CURRENT	70mA per Encoder 140 mA total	15mA per Encoder, 30 mA total	15mA per Encoder, 30 mA total	Follow IO-Link Standards	N/A
CONTROLLER LOAD	Sinking current 32mA max \| Residual voltage 0.4 V max @ ≤16mA \| 1.5V max @ >16mA to 32mA	10kΩ or greater	burden 500 Ω Max	N/A - Use a certified IO-Link Master	N/A
PIN OUT	Blue wire - 0V	Pin 1, 24 V DC in	Pin 1, 24 V DC in	Pin 1, 24 V DC in	N/A
	Brown wire - 24V	Pin 2, 0.1 - 10 V out	Pin 2, 4 - 20 mA out	Pin 2, not connected
	Black wire - bit 0	Pin 3, GROUND	Pin 3, GROUND	Pin 3, GROUND
	Red wire - bit 1	Pin 4, not connected	Pin 4, not connected	Pin 4, C/Q
	Orange wire - bit 2
	Yellow wire - bit 3
	Green wire - bit 4
	Purple wire - bit 5
	Gray wire - bit 6
	White wire - bit 7
	Black / White wire - bit 8
	Red / White wire - bit 9
	Orange / White wire - bit 10
	Shield - GROUND

DATA SHEETS:

GCSA Gray Code 11 bit Encoder

AVSA Analog Voltage Encoder

AMSA Analog Current Encoder

IOSA IO-Link Encoder

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