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Elmo SSA-12/55 User Manual

Elmo SSA-12/55
43 pages
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SSA - Rev 6/98
Rev 6/98
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Elmo SSA-12/55 Specifications

General IconGeneral
Channels2
Impedance8 ohms
Frequency Response20Hz - 20kHz
Signal-to-Noise Ratio80dB
Input Impedance47k ohms
Power Output12W per channel

Summary

SSA - SAFETY INSTRUCTIONS

INTRODUCTION

Contains information, cautions, and warnings for safe operation and retention of instrument condition.

WARNINGS

Highlights hazards related to parts removal, live adjustments, and conductor interruption.

1. DESCRIPTION

3. Technical specifications

4. Operation of the servo control

4.6 Protective functions

Covers amplifier protection mechanisms: short circuit, under/over voltage, and temperature faults.

4.6.1 Short circuit protection

Details MOSFET capability for short circuit protection and inhibit indication.

4.6.2 Under/Over voltage protection

Explains amplifier inhibition when DC bus voltage exceeds specified limits.

4.6.3 Temperature protection

Describes amplifier inhibition due to heatsink temp >90°C, with auto-restart.

5. Terminal Description

5.1 Terminals of the basic SSA

Lists power stage (Vs, M1, M2, G) and control stage (1-12) terminals with their functions.

6. Installation procedures

6.2 Wiring

Offers techniques for proper wiring, grounding, and shielding for servo operation and performance.

7. Start - Up Procedures

8. Amplifier adjustment and diagnostics

8.1 Balance adjustment

Instructions for adjusting balance trimmer (T2) to stop motor when the command signal is zero.

8.2 Verifying the static current limits

Details measuring current limits using a load and terminal 7 current monitor with its scale.

Service Centers and Warranty

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