AS37-H39B BOARDCOM | Alldatasheet
Document overview
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Technical content
Features
39-bit resolution: 16-bit battery backup multi-turn and 23-bit optical single-turn Built-in communication protocol (option): BiSS C mode, SSI mode and RS-485 half-duplex Overall encoder outer diameter Ø37 mm and typical mounting height 28 mm Supporting standard hollow taper shaft, short hollow taper shaft and ¼ inch, 6-mm and 8-mm diameter of the hollow blind shaft options. Benefits High resolution with higher measurement accuracy and better speed ripple control. Immediate position detection upon power up without the need of system homing. Hollow taper shaft design for China Servo motor market. Short hollow taper shaft option for low height application. Small OD and low height for ease of integration to small size motor.
Applications
Robotics Factory automation CNC machine tool NOTE Broadcom encoders are not recommended for use in safety critical applications, e.g., ABS braking systems, power steering, life support systems, and critical care medical equipment. Contact a sales representative if more clarification is needed. AS37-H39B Series 39-Bit Battery Backup Multi-Turn Absolute Encoder Data Sheet
- 2 - AS37-H39B Series Data Sheet Product Specifications Electrical Specifications Note: Normal mode: Encoder operates on encoder main power supply. Battery mode: Encoder operates in "OFF" State, while multi-turn data is tracked by battery circuitry Mechanical Specifications Environmental Specifications Parameter Conditions Min. Typ. Max. Unit Current Consumption Without load, Tamb = 25°C — 115 — mA Supply Voltage — 4.5 5 5.5 V Electrically Permissible Speed — — — 6,000 min Electrically Permissible Acceleration Normal mode — — 8.0 x 104 rad/s2 Battery mode — — 4.0 x 104 External Battery Supply Voltage — — 3.6 4.5 V Battery Mode Current Consumption Tamb = 25°C — 95 — μA Parameter Conditions Min. Typ. Max. Unit System Accuracy With electrical correction, Tamb = 25°C —± 8 0— A r c - s e c Mechanical Permissible Speed — — — 6,000 min–1 Shaft Radial Play — — — ±0.05 mm Shaft Axial Play — — — ±0.1 mm Starting Torque Tamb = 25°C — — 9.8 x 10 –3 N.m Parameter Conditions Min. Typ. Max. Unit Storage Temperature — –20 — 105 °C Operating Temperature — –20 — 105 °C Relative Air Humidity (Non-Condensing) Tamb = 40˚C — 90 — RH% Protection — — IP40 — Vibration Per IEC 60068-2-6 — — 10G; 10~2000 Hz Shock Per IEC 60068-2-27 — — 6ms; Half Sine; 200G
- 3 - AS37-H39B Series Data Sheet Encoder Specifications Figure 1 Shaft Rotation NOTE Exposure to absolute maximum rating conditions for extended periods might affect reliability. Parameter Remarks Resolution Single-turn 23-bit (8388607 coun ts) and Multi-turn 16-bit (65535 counts). Counting Direction Increase with Counter Clockwise (CCW) shaft rotation, view from coupling end ( Figure 1). Initialization Time 500 ms.
- 4 - AS37-H39B Series Data Sheet Interface Diagram The following are examples of the circuit diagram of full-duplex and half-duplex transceiver. Full-Duplex Transceiver (BiSS C Mode/SSI Mode Protocol) Figure 2 Circuit Diagram of Full-Duplex Transceiver Half-Duplex Transceiver (RS-485 Half-Duplex Protocol) Figure 3 Circuit Diagram of Half-Duplex Transceiver * Termination resistor, 120Ω and 220Ω are recommended but may depend on the characteristic impedance of cable used. NOTE Connect encoder chassis and cable shield to frame ground (FG) in application for enhanced noise immunity in harsh operating conditions. ControllerEncoder GND MA+ / SCL+ MA- / SCL- SLO+ / DOUT+ SLO- / DOUT- FG Transceivers (P/N: SN65LBC179Q) Transceivers(P/N: SN65LBC179Q) GND Vcc5V GND Vcc (5V) GND A B 0.1uF GND Y Z D R *120 GND 1.2k 1.2k Y Z A B GND 0.1uF R D *120 GND FG BATPWR GND3 4 Battery3.6V
10 Shield
*220 *220 GND FG RO DI DE RO /RE /RE DE DI Transceivers (P/N: ISL8485E) D D R RGND GND B/Z A/Y B/Z A/Y 0.1uF 0.1uF 1.2k 1.2k 1.2k1.2k FG 3.6V GND BATPWR GND Vcc5V GND Vcc (5V) GND Battery Transceivers (P/N: ISL8485E) Shield wire Shield wire
- 5 - AS37-H39B Series Data Sheet Connector Output Assignment NOTE Recommended mating connector: Hirose Part No: DF13-7S-1.25C for 7-pin connector and DF13-10S-1.25C for 10-pin connector (CL No.536-0006-8). Hirose (Terminal Pin for Wire 26~30AWG): DF13-2630SCF (CL No.536-0300-5). Pin AS37-H39B-Bxxx (BiSS-C) (Output: 10-Pin Connector) AS37-H39B-Sxxx (SSI) (Output: 10-Pin Connector) AS37-H39B-Kxxx (RS-485 Half-Duplex) (Output: 7-Pin Connector)
1 Vcc, Encoder Supply Vcc, Encoder Supply Vcc, Encoder Supply
2 GND, Ground GND, Ground GND, Ground
3 GND (External Battery) GND (Exter nal Battery) GND (External Battery)
4 BATPWR (External Battery) BATPWR (External Battery) BATPWR (External Battery)
5 MA+ SCL+ DATA+
6M A – S C L – D A T A –
7 SLO+ DOUT+ Cable Shield, Connect to Chassis
8S L O – D O U T – N / A
9 Cable Shield, Connect to Chassis Cable Shield, Connect to Chassis N/A
10 Cable Shield, Connect to Chassis Cable Shield, Connect to Chassis N/A
Figure 4 7- Pin Connector Pin Assignment Figure 5 10-Pin Connector Pin Assignment 1st pin 1st pin
- 6 - AS37-H39B Series Data Sheet Mechanical Outline Standard Hollow Taper Shaft Option (Φ9 to Φ7.5 mm; 1:10) Recommended Shaft and Mounting Requirement Notes: Dimensions are in millimeters. 3rd angle projection. Unless otherwise specified, all tolerances are within ±0.5 mm. Recommended to have a recess on motor mounting surface to prevent encoder shaft interference with motor base.
- 7 - AS37-H39B Series Data Sheet Short Hollow Taper Shaft Option (Φ9 to Φ7.65 mm; 1:10) Recommended Shaft and Mounting Requirement Notes: Dimensions are in millimeters. 3rd angle projection. Unless otherwise specified, all tolerances are within ±0.5 mm. Recommended to have a recess on motor mounting surface to prevent encoder shaft interference with motor base.
- 8 - AS37-H39B Series Data Sheet Hollow Blind Shaft Option (Φ8 mm) Recommended Shaft and Mounting Requirement Notes: Dimensions are in millimeters. 3rd angle projection. Unless otherwise specified, all tolerances are within ±0.5 mm. Recommended to have a recess on motor mounting surface to prevent encoder shaft interference with motor base.
- 9 - AS37-H39B Series Data Sheet
Ordering Information
NOTE Refer to the factory for sample order and lead time.
For product information and a complete list of distributors, please go to our web site: www.broadcom.com. Broadcom, the pulse logo, Connecting everything, Avago Technologies, Avago, and the A logo are among the trademarks of Broadcom in the United States, certain other countries and/or the EU. Copyright © 2017 Broadcom. All Rights Reserved. The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries. For more information, please visit www.broadcom.com. Broadcom reserves the right to make changes without further notice to any products or data herein to improve reliability, function, or design. Information furnished by Broadcom is believed to be accurate and reliable. However, Broadcom does not assume any liability arising out of the application or use of this information, nor the application or use of any product or circuit described herein, neither does it convey any license under its patent rights nor the rights of others. AS37-H39B-DS100 – March 31, 2017