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Summary of Contents for AEC Star T3
- Page 1 Service Manual Star T3/T3R UPS 1kVA~3kVA 220VAC www.allis.com.tw...
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Page 2: Table Of Contents
ST3 1-3kVA Service Manual Rev.1 Content 1. PSDR Introduction..........................1 1.1 1 kVA PSDR ..........................1 1.2 2/3 kVA PSDR ......................... 1 2. Fault and Warning ..........................2 3. Troubleshooting..........................3 3.1 Quick Start..........................3 3.2 PFC Analysis:.......................... 4 3.3 Boost Analysis......................... 5 3.4 Inverter Analysis........................ -
Page 3: St3 1-3Kva Service Manual Rev
ST3 1-3kVA Service Manual Rev.1 1. PSDR Introduction 1.1 1 kVA PSDR 1.2 2/3 kVA PSDR 1. Charger Module 2. Fan driver 3. Inverter IGBT Driver Module 4. PFC IGBT Driver Module 5. PFC Control Module 6. Boost IGBT Driver Module 7. -
Page 4: Fault And Warning
ST3 1-3kVA Service Manual Rev.1 2. Fault and Warning LCD & LED Status / Possible Cause Action Audible Alarms 1. Fan fail. Replace the fan. AC: OK BATT: OK 2. Temperature is Reduce ambient TEMP Fail higher than temperature or O/P load. Fault Warning Normal... -
Page 5: Troubleshooting
ST3 1-3kVA Service Manual Rev.1 3. Troubleshooting 3.1 Quick Start Before any check of UPS, please check the components as listed in the following table. This action could help you find problem quickly and make sure these components good or not first. Possible Circuit Block Coded Components Description... -
Page 6: Pfc Analysis
ST3 1-3kVA Service Manual Rev.1 3. Troubleshooting 3.2 PFC Analysis: In this section, some components you could check to see if failure occurs on PFC Correction circuit as shown below. Be aware of F3 fuse open indicates failure of this block. Please replace all faulty components before re-start the UPS. 1kVA-PFC 2/3kVA-PFC Step... -
Page 7: Boost Analysis
ST3 1-3kVA Service Manual Rev.1 3. Troubleshooting 3.3 Boost Analysis General speaking, the most distinct phenomenon of failure on this section is F1 and F2. Open finding this will be very helpful to repair them. 1kVA-Boost 2/3kVA-Boost Step Checked components Instrument Reference Failure Mode... -
Page 8: Inverter Analysis
ST3 1-3kVA Service Manual Rev.1 3. Troubleshooting 3.4 Inverter Analysis 1kVA-Inverter 2/3kVA-Inverter Step Checked components Instrument Reference Failure Mode function Value 2k/3k:Q14,Q13,Q16,Q15 (G,S) Ω 23.5kΩ Short or open 1k:Q12,Q13 (G,S) 2k/3k: D30,D31,D32,D33 Ω Short or open D21,D22 46.6 Action ltem: If fail condition stated in resistance R110, R106, R117 and R119 of 2/3kVA and R53 and R37 of 1kVA, there is high possibility that the corresponding photo couplers are damaged, change the Inverter IGBT driver module Allis Electric... -
Page 9: Sps Module Analysis
ST3 1-3kVA Service Manual Rev.1 3. Troubleshooting 3.5 SPS Module Analysis 1 kVA-SPS Module 2/3 kVA-SPS Module Step Checked components Instrument Reference Failure Mode function Value Q201(S,D) DIODE 0.42 Short or open U01 (3845) PIN 5-6 Ω 46.7K Too low PIN 5-7 PIN 5-8 4.31K... -
Page 10: Charger Module Analysis
ST3 1-3kVA Service Manual Rev.1 3. Troubleshooting 3.6 1A Charger Module Analysis 1 kVA-Charger Module 2/3 kVA-Charger Module Step Checked components Instrument Reference Failure Mode function Value Q2(S,D) DIODE 0.45 Short or open U07 (3845) PIN 5-6 Too low PIN 5-7 Ω... -
Page 11: Igbt Driver Module Analysis
ST3 1-3kVA Service Manual Rev.1 3. Troubleshooting 3.7 PFC / Boost / Inverter IGBT Driver Module Analysis 1 kVA- IGBT Driver Module 2/3 kVA- IGBT Driver Module Step Checked components Instrument Reference Failure Mode function Value U701.PIN2/PIN3 DIODE 0.54 Short or open Q702(E.B,E.C) DIODE 0.64,1.00... -
Page 12: Final Testing
ST3 1-3kVA Service Manual Rev.1 4. Final testing After you have replaced all defective components on power stage (PSDR), please follow the steps as below. Step 1. Connect with control board. Step 2. Re-plug fan wires into connector FAN1 and FAN2. 1 kVA Step 1 Step 2... -
Page 13: Final Testing
ST3 1-3kVA Service Manual Rev.1 4. Final testing Do not connect with AC power source yet. Step 3. Supply DC voltage (96-110Vdc/3 Amp (limited current) for 2/3kVA, 36~41Vdc/3Amp for 1k) with DC power supply via BAT(+) and BAT(-). Press the switch on front panel for more than 3 seconds, you will see "current limit" for a short time on the DC power supply for about only 2 seconds, then UPS should be DC start (If UPS does not start successfully, and LCD display off, replace the above procedure). -
Page 14: Step
ST3 1-3kVA Service Manual Rev.1 4. Final testing 2/3 kVA DC_BUS: + 340~365VDC Output Voltage: 220/230/240 +/-2% DC_BUS: - 340~365VDC Step 5. Connect with AC power source, then follow the step3 and step4 to check the DC_BUS and output voltage again. If UPS fails to start up for several times, there must be some defective components exist.
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