Caen ELS SY3634 Troubleshooting Manual

Bipolar power supply heterogeneous system

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SY3634 – SY3634T

Bipolar Power Supply

Heterogeneous System

Troubleshooting Guide

Rev. 2 – August 2024

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Summary of Contents for Caen ELS SY3634

Page 2 This product is licensed by Elettra-Sincrotrone Trieste S.C.p.A. This product is certified. CAEN ELS s.r.l. Via Karl Ludwig Von Bruck 32– 34144 Trieste (TS) Italy Mail: info@caenels.com Web: www.caenels.com...
Page 3: Table Of Contents
Table Of Contents FAULTS ........................ 8 DC-L ................9 NDER VOLTAGE ................12 XTERNAL NTERLOCKS ................14 ROTECTION ............... 16 URRENT ROTECTION ..................18 EGULATION AULT ................20 UXILIARY ARTH AULT ....................22 ARTH AULT MOSFET O ..............24 EMPERATURE ................
Page 4 Document Revision Date Comment July13 2011 First Release February 27 2012 Some information added - e.g. ripple and regulation threshold November 3 2014 Manual graphics changed August 8 2024 Updated address and revision numbering...
Page 5: Safety Information - Warnings
SY3634 Troubleshooting Guide Faults Safety information - Warnings CAENels will repair or replace any product within the guarantee period if the Guarantor declares that the product is defective due to workmanship or materials and has not been caused by mishandling, negligence on behalf of the User, accident or any abnormal conditions or operations.
Page 6 Faults SY3634 Troubleshooting Guide Read over the instruction manual carefully before using the instrument. The following precautions should be strictly observed before using the SY3634: • Do not use this product in any manner not WARNING specified by the manufacturer. The protective features of this product may be impaired if it is used in a manner not specified in this manual.
Page 7 SY3634 Troubleshooting Guide Faults The following table shows the general environmental requirements for a correct operation of the instrument: Environmental Conditions Requirements Operating Temperature 5°C to 45°C Operating Humidity 30% to 85% RH (non-condensing) Storage Temperature -10°C to 60°C Storage Humidity...
Page 8: Faults
The aim of this troubleshooting guide is to give users information and hints on how to solve possible problems on the SY3634 system, the A3636 auxiliary power supply, the external bulk power supply unit, the Hardware Sentinel Key (HSK) and the A36xxBS modules –...
Page 9: Dc-Link Under-Voltage
SY3634 User’s Guide for further details). When a switch ON command is sent to the bulk unit, it should imply the feeding of the 24V DC-Link to the SY3634 crate; if this does not happen, a DC-Link under-voltage fault is triggered.
Page 10 • Replace fuses CAUTION: This operation can be done by expert personnel only. WARNING: removing the first A36xxBS module installed in the SY3634 crate, next to the A3636 auxiliary power converter, can cause a shock hazard. Switch OFF the general mains before extracting the board from the crate.
Page 11 A severe hardware problem has occurred and the module needs to be sent to assistance. WARNING: removing the first A36xxBS module installed in the SY3634 crate, next to the A3636 auxiliary power converter, can cause a shock hazard. Switch OFF the general mains before extracting the board from...
Page 12: External Interlocks
Faults SY3634 Troubleshooting Guide 1.2 External Interlocks Each channel/power supply is equipped with 8 external configurable faults; each external interlock name can be changed by storing the desired string in the respective EEPROM cell Fields (accessible with the commands “MRF:” and “MWF:”);...
Page 13 A severe hardware problem has occurred and the module needs to be sent to assistance. WARNING: removing the first A36xxBS module installed in the SY3634 crate, next to the A3636 auxiliary power converter, can cause a shock hazard. Switch OFF the general mains before extracting the board from...
Page 14: Crow-Bar Protection
Faults SY3634 Troubleshooting Guide 1.3 Crow-Bar Protection The Crow-Bar circuit shorts the A36xxBS output terminals by switching on a TRIAC if the output voltage exceeds a fixed threshold, thus triggering the respective fault that consequently switches off the A36xxBS power supply module.
Page 15 A severe hardware problem has occurred and the module needs to be sent to assistance. WARNING: removing the first A36xxBS module installed in the SY3634 crate, next to the A3636 auxiliary power converter, can cause a shock hazard. Switch OFF the general mains before extracting the board from...
Page 16: Over-Current Protection
Faults SY3634 Troubleshooting Guide 1.4 Over-Current Protection The Over-Current protection circuit measures the module input DC-Link current by means of a surface-mounted Hall-effect sensor that switches OFF the output MOSFET drivers when the current exceeds a fixed threshold (note that this threshold is lower than input fuses rating –...
Page 17 SY3634 Troubleshooting Guide Faults WARNING: removing the first A36xxBS module installed in the SY3634 crate, next to the A3636 auxiliary power converter, can cause a shock hazard. Switch OFF the general mains before extracting the board from the crate.
Page 18: Regulation Fault
Faults SY3634 Troubleshooting Guide 1.5 Regulation Fault The regulation fault diagnostics continuously compares the actual output current value with the current set and triggers a fault condition whenever their absolute difference exceeds by a user-defined fixed limit; this trigger switches off the A36xxBS power supply module.
Page 19 As the last check, you may try to read to content of the EEPROM "value" field cell #37; this value should be factory default 0.2 [A]. WARNING: removing the first A36xxBS module installed in the SY3634 crate, next to the A3636 auxiliary power converter, can cause a shock hazard.
Page 20: Auxiliary Earth Fault
1.6 Auxiliary Earth Fault When any output terminal of any of the A36xxBS power supply modules installed in a SY3634 system crate has a path to Earth, an undesired current entity flows through this path. If this current is relatively small – i.e. less 1A – the earth current DCCT detector installed on the corresponding A36xxBS module directly switches off the output H- Bridge, thus avoiding possible system damages.
Page 21 • Replace the fuses on A3636 auxiliary power converter WARNING: removing the first A36xxBS module installed in the SY3634 crate, next to the A3636 auxiliary power converter, can cause a shock hazard. Switch OFF the general mains before extracting the board from the crate.
Page 22: Earth Fault
Faults SY3634 Troubleshooting Guide 1.7 Earth Fault When any output terminal (either positive or negative) of the A36xxBS module has a direct path to earth, an undesired current flows through this path. The earth DCCT mounted on the module measures this current and compares its value to a configurable threshold: if the measured value its higher than the threshold a fault triggering condition takes place.
Page 23 SY3634 Troubleshooting Guide Faults WARNING: removing the first A36xxBS module installed in the SY3634 crate, next to the A3636 auxiliary power converter, can cause a shock hazard. Switch OFF the general mains before extracting the board from the crate.
Page 24: Mosfet Over-Temperature
Unscrew the screws that lock the fans to the front panel, unplug the cables connected to FAN_1 and FAN_2 connectors and replace fans with spare ones. WARNING: removing the first A36xxBS module installed in the SY3634 crate, next to the A3636 auxiliary power converter, can cause a...
Page 25 A severe hardware problem has occurred and the module needs to be sent to assistance. WARNING: removing the first A36xxBS module installed in the SY3634 crate, next to the A3636 auxiliary power converter, can cause a shock hazard. Switch OFF the general mains before extracting the board from the crate.
Page 26: Shunt Over-Temperature
FAN_1 and FAN_2 connectors and replace fans with spare ones. WARNING: removing the first A36xxBS module installed in the SY3634 crate, next to the A3636 auxiliary power converter, can cause a shock hazard. Switch OFF the general mains before extracting the board from the crate.
Page 27 A severe hardware problem has occurred and the module needs to be sent to assistance. WARNING: removing the first A36xxBS module installed in the SY3634 crate, next to the A3636 auxiliary power converter, can cause a shock hazard. Switch OFF the general mains before extracting the board from the crate.
Page 28: Bulk Redundancy
WARNING: removing the first A36xxBS module installed in the SY3634 crate, next to the A3636 auxiliary power converter, can cause a shock hazard. Switch OFF the general mains before extracting the board...
Page 29: Ripple Fault
PID compensator parameters as well by a too small threshold value. This threshold value can be found in EEPROM cell #39 (see SY3634 User's Manual for further details) and the default value is 1% of full scale - e.g. 50 mA for a A3605BS module.
Page 30 Figure 4: step responses for different PID parameters WARNING: removing the first A36xxBS module installed in the SY3634 crate, next to the A3636 auxiliary power converter, can cause a shock hazard. Switch OFF the general mains before extracting the board from...
Page 31: Ethernet Connection
SY3634 Troubleshooting Guide Faults 1.12 Ethernet Connection Flow Chart 12 may be used whenever a user is unable to remotely connect to an A36xxBS power supply module – neither by TCP/IP nor UDP. Ethernet connection not possible Check computer Subnet is the...
Page 32 Faults SY3634 Troubleshooting Guide Figure 5: XPort™ web-server interface Figure 6: Apply default Ethernet settings...
Page 33 WARNING: removing the first A36xxBS module installed in the SY3634 crate, next to the A3636 auxiliary power converter, can cause a shock hazard. Switch OFF the general mains before extracting the board from the crate.

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Sy3634t