Subscribe to Our Youtube Channel
Related Manuals for Xtreme Power Conversion P91
Summary of Contents for Xtreme Power Conversion P91
- Page 1 P91, TX91, TX91L, TXVR Service Manual www.xpcc.com | © 2019 Xtreme Power Conversion Corporation. All rights reserved. (Rev 4/26/19)
-
Page 2: Table Of Contents
P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply Table of Contents 1 General Information..................3 1.1 Getting Started...........................3 1.2 Important Safefty Instructions....................3 2 Specifications....................4 3 Functional Block..................7 4 Working Principle of the Major Functional Block...........8 4.1 Switch Power Supply........................8 4.2 PFC/Booster..........................9 4.3 Inverter............................9... -
Page 3: General Information
1 General Information 1.1 Getting start This manual is for P91, TX91, TX91L, TXVR tower and R/T UPS. It can help service person perform the basic main- tenance and repair service. This manual only focuses on the service section, so you should get the basic operation of the UPS from the user manual, and make sure you had read and understood the user manual before reading the manual. -
Page 4: Specifications
P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 2. Specifications P91-5K P91-6K P91-10K MODEL NUMBER CAPACITY Power rating 5kVA (5kW) 6kVA (6kW) 10kVA (10kW) INPUT Voltage 110–300VAC* Frequency 50/60Hz OUTPUT Voltage 200/208/220/230/240VAC (208/120V or 240/120V with optional transformer) Frequency 50/60Hz ±... - Page 5 P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply TX91-3.8K TX91-5K TX91-6K TX91-10K MODEL NUMBER CAPACITY Power rating 3.8kVA (3.8kW) 5kVA (5kW) 6kVA (6kW) 10kVA (10kW) INPUT Voltage (nominal) 208VAC (200VAC, 220VAC, 230VAC, 240VAC optional) Voltage range 110-300VAC Frequency 46–64Hz auto-sensing...
- Page 6 P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply TX91L-3.8K TX91L-5K TX91L-6K TX91L-10K MODEL NUMBER CAPACITY Power rating 3.8kVA (3.8kW) 5kVA (5kW) 6kVA (6kW) 10kVA (10kW) INPUT Voltage (nominal) 208VAC (200VAC, 220VAC, 230VAC, 240VAC optional) Voltage range 110-300VAC Frequency 46–64Hz auto-sensing...
-
Page 7: Functional Block
P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 3. Functional Block As a true online UPS, the product applies a double conversion topology, comprising functional blocks as shown in Figure 3.1 Figure 3.1 Function block Diagram The CNTL block controls the action of the UPS system. It also provides the communication interface for receiving and executing command from users via the panel or other communication protocol. -
Page 8: Working Principle Of The Major Functional Block
P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply The Rectifier and PFC blocks are the input stage of the UPS. The blocks convert AC input power into two stable DC power stored in the BUS capacitor. In the meantime, PFC (Power Factor Correction) will be executed and allows input current tracking the input voltage waveform. -
Page 9: Pfc/Booster
P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply Figure 4.1 is a flyback converter. When Q1 is on, all rectifier diodes (D1/D2/D3) are on open status and all out- put capacitors (C1/C2/C3) supply currents to the load. The primary coil of the transformer will become a pure inductor and the primary current will linearly increase to store energy in the coil. -
Page 10: Charger
P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 4.4 Charger The function of charger is to charge and maintain the batteries at fully charged condition. The charger charges the batteries with a constant current at initial stage. At the same time, the battery voltage keeps increasing until reaching the constant charge voltage point. -
Page 11: Function Explanations For Each Pcb
P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 5 Function explanations for each PCB Table 5.1 PCB information Item PCB Name PCB serial number Q u a n - Remark tity SPS-Charger 71-302390-XXG CNTL 72-300211-XXG / 71-301569-XXG Communication 72-300294-XXG/71-302389-XXG... -
Page 12: Control Board
P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 5.2 CNTL board (Control Board) The CNTL board is the core of the UPS system. It controls the actions of the semiconductors and other mechani- cal switches, the display of the LED/LCD, the sound of the buzzer, the communication with the computer, and other important tasks. -
Page 13: Main Power Board
P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 5.5 Main Power board The Main converts the AC/DC power to a pure sine waveform. And then it converts the DC/AC power. There are many semiconductors and easy-failure components on the board, so it’s required to pay more attention when UPS is abnormal. -
Page 14: Para Board
P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 5.6 Para board The Para(A) board and Para(B) board is used for parallel communication when the UPS system is running in paral- lel mode. Board 1 Board 2 Board 3 Xtreme Power Conversion Corporation... -
Page 15: O/P Relay Board
P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 5.7 O/P Relay board The O/P Relay board should be installed for parallel system. For single system, it can be removed. The board can disconnect the UPS from the output (parallel system). -
Page 16: Lcd Display
P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 6.2 LCD Display Figure 6.1 LCD Display 6.3 LCD Display Icon Display Function Backup time information Indicates the backup time in pie chart. ● Indicates the backup time in numbers. H: hours, M: minutes, S: seconds ●... - Page 17 P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply Indicates overload. Indicates the load or the output is short. Mode operation information Indicates the UPS connects to the utility. Indicates the battery is working. Indicates the bypass circuit is working.
-
Page 18: Troubleshooting
P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 7. Troubleshooting This section describes how to find the troubles when UPS is abnormal. We suggest you to follow the service procedure below: 1. Check the UPS status via LED and LCD display, the sound of the buzzer, or listen to the description of end users. - Page 19 P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 7.1.2 Trouble shooting for fault codes in LCD display When the UPS is fault, it will transfer to Fault mode. Code LCD icon Fault Event Description Action None BUS soft start failure When the bus voltage can’t reach the...
- Page 20 P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply Code LCD icon Fault Event Description Action Output short When INV output voltage remains Remove all the loads. Turn off the circuited lower than 50V and output current UPS. Check whether the output of keeps lower than 20A for over 3 peri- UPS and loads are short circuited.
- Page 21 P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply Code LCD icon Fault Event Description Action None No communication No communication fault Check if the parallel wire is con- fault nected well. None Over temperature Detecting NTC temperature more Check if UPS is overloaded, air than 90°C...
- Page 22 P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply Warning code Warning event Battery unconnected Over charge Low battery Overload Fan failure EPO enable Over temperature Charger failure Failure on parallel redundancy L1 IP fuse broken Line situations are different in parallel system...
-
Page 23: Repair
P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 7.1.3 Troubleshooting Problem Possible cause Action Battery backup time is short Battery not yet been fully Keep UPS connected to utility power continuously charged. for more than 10 hours to recharge the batteries. - Page 24 P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 7.2.3 Configuration of the charger current on the LCD or by command Set charger current on LCD: There are two parameter 2 and parameter 3, you can set charger current form 1A/2A/3A/4A by setting param- eter 2.
- Page 25 P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 7.2.5 Regulation of the system Parameter Setting Method: 1. Connect the RS232 port of the UPS to the RS232 port of the computer with RS232 cable. Open Communication Test Tool software. You will see software interface as shown in Figure 7.2.
- Page 26 P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply Regulation Process for Single UPS 1. BUS voltage regulation: When the UPS runs in AC mode, measure ±BUS voltage with the multimeter, and then regulate ±BUS voltages to 360±0.5V by using BUS regulation command. (BUS voltage can be regulated about 0.1V every point by using BUS regulation command).
- Page 27 P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 6k Main Power Section Circuit Block Checked components Component Type Failure condition FUSE F3,F4 Fuse Open Rectifier Q17, Q18, Q21 A-K Short or open D33, D35 Diode Short or open Q22, Q23...
-
Page 28: Test Step
P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 8. Test Step After replacing all defected components, follow this flow Repair the UPS according to the chart to verify the repair result and the reliability of the trouble shooting UPS. -
Page 29: Appendix
P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 9. Appendix 9.1 Reference Waveforms Below are some waveform charts to show normal UPS operation. It’s a very useful reference to verify the test result in section 8. CH1: IP SCR driver... - Page 30 P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply CH1: INV voltage CH1: INV voltage CH2: IP voltage CH2: Battery voltage CH3: -BUS voltage CH3: -BUS voltage CH4: +BUS voltage CH4: +BUS voltage AC mode (transfer from Bypass mode) Battery mode Figure 9.2 Turn on the UPS...
- Page 31 P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply CH1: INV voltage CH2: IP voltage CH3: VGE-(INV PWM-) CH4: VGE+(INV PWM+) Figure 9.4 INV PWM 9.2 Basic communication command In this section, we will show you some basic communication commands that will help you debug or regulate the UPS system.
- Page 32 P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply Data Description Notes Start byte MMM.M Input voltage M is an Integer number 0 to 9. The units is V. HH.H Input frequency H is an Integer number 0 to 9. The units is Hz.
- Page 33 P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 9.2.2 V<n> This command is to set the nominal output voltage. The format is: Computer: V<n><Enter> UPS: (ACK or (NAK* *: If UPS accepts this command, responds ACK. Otherwise, responds NAK Output Voltage: <n>. n is 208,220,230,240.
- Page 34 P91, TX91, TX91L, TXVR Service Manual Uninterruptible Power Supply 9. 2.6 VB±<n> This command is to adjust the UPS sampled battery voltage value (the battery voltage displayed on LCD) to match the battery voltage you measure with a multimeter. The format is: Computer: VB±<n><Enter>...
Need help?
Do you have a question about the P91 and is the answer not in the manual?
Questions and answers