Section 2
Expansion Board Description
Introduction
Resolver to Digital Interface Expansion Board
Catalog No. EXB009A01
Group 1 Expansion Board
The Resolver to Digital Interface expansion board provides closed loop operation for the Baldor Series 18H, 19H, 20H and 22H controls. The Resolver to Digital Interface can also be used for PID control.
Note: When a Resolver to Digital Interface is used in a process control application, an encoder should be used to provide velocity feedback to the control.
Specifications
The Resolver to Digital interface is used with a motor mounted resolver. This provides the correct feedback signals for the Baldor Control. The control can then monitor and control shaft position. The Buffered Encoder Output (Retransmit) signals are still available from the control.
Resolver to Digital interface
Resolver Reference Supply | 4 Volts, 25 mA maximum |
| (@ 10KHz) |
DIgital Resolution | 10, 12, 14, 16 bits (selectable) |
Resolver Input Channels | ± Sine, ± Cosine |
Resolver Impedance | 160 Ohms @ 10KHz minimum |
Resolver Return Voltage | 2 Volts minimum |
Resolver Transformation Ratio | 2:1 (0.5 TR) |
Resolver Speeds | 1:128 (selectable) |
Connector | Screw Terminals |
Description