ZF2/ZF3 SCR Power Controller
Troubleshooting
Rev 3
Ametek HDR Power Systems
23
CHAPTER 7 – Troubleshooting
7.1
Customer-Service Program
Although service is seldom necessary, because of the inherent long-term reliability of solid-state
components and conservative design, Ametek HDR Power Systems emphasizes customer satisfaction
by maintaining a rapid-response and cooperative customer-service. If operational difficulties occur,
Ametek HDR Power Systems will provide replacement parts or units quickly, courteously and
efficiently. If servicing problems arise that are not within the scope of the following troubleshooting
guide, service is readily available, as detailed in Chapter 7.
7.2
Troubleshooting Typical Symptoms
The ZF2/ZF3 is considered to be operating properly when its output voltage can be satisfactorily varied
from 0% to 97% of the available input voltage by a control signal. Improper operation of the unit is
usually indicated by one of the following symptoms:
a. No output.
b. Full output at all times, with no change resulting from a control signal change.
c. Output variable from some intermediate value to maximum, but cannot be brought to zero.
d. Output variable from zero to some intermediate value, but cannot be brought to maximum.
The symptoms listed may be caused by one or more of the following: an environmental problem,
faulty input-power or load connections, and the ZF2/ZF3 itself. These possible causes should be
investigated as described in Chapters 7.4 through 7.6.
7.3
Static Precautions when Servicing
Servicing should be performed by qualified personnel only, following procedures described herein.
If troubleshooting indicates a need to replace a component on a printed circuit board or possibly the
entire board, measures to prevent electrostatic discharge (ESD) damage must be taken.
a. ALWAYS wear a wrist strap connected to ground through a 1-megohm resistor when working on
printed circuit boards.
b. Use soldering iron with a grounded tip.
c. Use a non-static solder sucker (metallic) or solder removal braid.
d. Transport static sensitive components in static shielding bags or rails. A new printed circuit board
should be treated as a static sensitive device. A part completely installed on a board does not
make the part static-safe.
WARNING - ELECTRIC SHOCK CAN KILL
HAZARDOUS VOLTAGES
exist at the
exposed heat sinks and at the load
unless the line-source fused disconnect or circuit breaker is open or off.
This is true even when the SCRs are turned off. Always remove power and
properly lock out power to the unit before attempting any service.
ATTENTION
Printed circuit boards contain sensitive components that can be damaged
by electrostatic discharge (ESD). Observe precautions for handling
electrostatic sensitive devices.
Содержание ZF2 SCR Series
Страница 6: ...Table of Contents ZF2 ZF3 SCR Power Controller iv Ametek HDR Power Systems Rev 3...
Страница 8: ...Safety Instructions ZF2 ZF3 SCR Power Controller 2 Ametek HDR Power Systems Rev 3...
Страница 23: ...ZF2 ZF3 SCR Power Controller Operation Rev 3 Ametek HDR Power Systems 17 Figure 4 9 Unbalance Block Diagram...
Страница 24: ...Operation ZF2 ZF3 SCR Power Controller 18 Ametek HDR Power Systems Rev 3...
Страница 32: ...Troubleshooting ZF2 ZF3 SCR Power Controller 26 Ametek HDR Power Systems Rev 3...
Страница 42: ...Appendix ZF2 ZF3 SCR Power Controller 36 Ametek HDR Power Systems Rev 3 Appendix C ZF2 60 225 A Outline R...
Страница 43: ...ZF2 ZF3 SCR Power Controller Appendix Rev 3 Ametek HDR Power Systems 37 Appendix D ZF2 350 500 A Outline R...
Страница 44: ...Appendix ZF2 ZF3 SCR Power Controller 38 Ametek HDR Power Systems Rev 3 Appendix E ZF2 650 A Outline R...
Страница 45: ...ZF2 ZF3 SCR Power Controller Appendix Rev 3 Ametek HDR Power Systems 39 Appendix F ZF2 800 1200 A Outline R...
Страница 46: ...Appendix ZF2 ZF3 SCR Power Controller 40 Ametek HDR Power Systems Rev 3 Appendix G ZF3 60 225 A Outline R...
Страница 47: ...ZF2 ZF3 SCR Power Controller Appendix Rev 3 Ametek HDR Power Systems 41 Appendix H ZF3 350 500 A Outline R...
Страница 48: ...Appendix ZF2 ZF3 SCR Power Controller 42 Ametek HDR Power Systems Rev 3 Appendix I ZF3 650 A Outline...
Страница 49: ...ZF2 ZF3 SCR Power Controller Appendix Rev 3 Ametek HDR Power Systems 43 Appendix J ZF3 800 1200 A Outline R...
Страница 51: ...Notes...
Страница 52: ...503 Lakeview Plaza Blvd Ste C Worthington Ohio 43085 USA...
