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
34
3.5.5.2.b CAN Communication
Notes for connecting the CAN communication cable (J1 port):
• Use 26 or 28 AWG twisted pair shielded cables. For best results, the shield should have
aluminum foil and copper braid.
• Connect the shield to the ground of the host (PC). Usually, this connection is soldered
internally inside the connector at the PC end. You can use the drain wire to facilitate
connection.
• The male RJ plug must have a shield cover.
• Usually, the shield of the cable is soldered to the shield of the RJ plug. Ensure that it is
connected in this manner.
• Connect a termination 120-Ω resistor at each of the two ends of the network cable.
Pin Signal Function Pin Positions
1 CAN_H CAN_H busline (dominant high)
1
2 CAN_L CAN_L busline (dominant low)
3 CAN_GND CAN ground
4, 5 N/A —
6 N/A Shield, connected to the RJ plug cover
7, 8 N/A —
Table 7: CAN (J1) Cable Pin Assignments