Installation Guide Instruction Manual
Table Of Contents
- Chapter 1: Safety Information
- Chapter 2: Introduction
- Chapter 3: Installation
- 3.1. Before You Begin
- 3.2. Unpacking the Drive Components
- 3.3. Assembling the Heatsink
- 3.4. Mounting the Harmonica
- 3.5. Connecting the Cables
- 3.5.1. Wiring the Harmonica
- 3.5.2. Connecting the Power Cables (J8)
- 3.5.3. Special Note about Disconnecting Molex Connectors
- 3.5.4. Connecting the Auxiliary Power Cable (J4)
- 3.5.5. Connecting the Feedback and Control Cables
- 3.5.5.1. Main Feedback (Feedback A) Cable (Port J3)
- 3.5.5.2. Communication Cable (Port J1)
- 3.5.5.3. I/O Cables
- 3.5.5.4. Auxiliary Feedback (Port J2)
- 3.5.5.4.a Auxiliary Feedback: Main Encoder Buffered Output or Emulated Encoder Output Option (Port J2)
- 3.5.5.4.b Auxiliary Feedback: Differential Encoder Input Option (Port J2)
- 3.5.5.4.c Auxiliary Feedback: Single-Ended Encoder Input Option (Port J2)
- 3.5.5.4.d Auxiliary Feedback: Pulse-and-Direction Input Option (Port J2)
- 3.6. Powering Up
- 3.7. Initializing the System
- Chapter 4: Technical Specifications
- 4.1. Features
- 4.2. Harmonica Dimensions
- 4.3. Power Ratings
- 4.4. Environmental Conditions
- 4.5. Harmonica Connectors
- 4.6. Auxiliary Power Supply (J4)
- 4.7. Control Specifications
- 4.8. Feedback
- 4.9. I/Os
- 4.10. Communications
- 4.11. Pulse-Width Modulation (PWM)
- 4.12. Heatsink Specifications
- 4.13. Compliance with Standards

Harmonica Installation Guide Installation
MAN-HARIG (Ver. 1.902)
www.elmomc.com
26
Connect the main feedback cable from the motor to the J3 port on the front of the Harmonica,
using a 12-pin, Molex plug.
Notes for connecting the J3 cable:
• Use 24 or 26 AWG twisted-pair shielded cables. For best results, the shield should have
aluminum foil covered by copper braid.
• Connect the drain wire to pin 4.
The drain wire is a non-insulated wire that is in contact with parts of the cable, usually the
shield. It is used to terminate the shield and as a grounding connection.
• Ground the shield to the motor chassis (except on resolver cables).
Figure 11: The Feedback (J3) Cable
Incremental
Encoder
Interpolated Analog
(Sine/Cosine)
Encoder
Resolver Tachometer and
Potentiometer
HAR-XX/YYY_ HAR-XX/YYYI HAR-XX/YYYR HAR-XX/YYYT
Pin
(J3)
Signal Function Signal Function Signal Function Signal Function
1 HC Hall sensor C input HC Hall sensor C input NC - HC Hall sensor C input
2 HB Hall sensor B input HB Hall sensor B input NC - HB Hall sensor B input
3 HA Hall sensor A input HA Hall sensor A input NC - HA Hall sensor A input
4 SUPRET Supply return SUPRET Supply return SUPRET Supply return SUPRET Supply return
5 SUPRET Supply return SUPRET Supply return SUPRET Supply return SUPRET Supply return
6 +5V Encoder/Hall
+5 V supply
voltage,
5 V @ 200 mA
maximum
+5V Encoder/Hall
+5 V supply voltage,
5 V @ 200 mA
maximum
NC - +5V Encoder/Hall
+5 V supply
voltage
Drain Wire