rtd UPS25 Operation & User’s Manual

Text of rtd UPS25 User Guide:

• rtd UPS25, UPS25 17 RTD Embedded Technologies, Inc Fig. 3-1 UPS25 integrated in a RTD PC/104 cpuModule stack together with a HPWR104 power supply module Note: For full output power performance, install your UPS25 toward the top of your PC/104 system, make sure adequate cooling is provided.

• rtd UPS25, UPS25 36 RTD Embedded Technologies, Inc Example on Interrupt vector table setup in C-code: void far _interrupt new_IRQ1_handler(void ); /* ISR function prototype */ #define IRQ1_VECTOR 7 /* Name for selected IRQ*/ void (interrupt far *old_IRQ1_dispatcher) (es,ds,di,si,bp,sp,bx,dx,cx,ax,ip,cs,flags); /* Variable to store old IRQ_Vector */ void far _interrupt new_IRQ1_handler(void ); /*---------------------------------------------------------------------- | Function: init_irq_handlers | Inputs: Nothing | Returns: Nothing | Purpose: Set the pointers in the

• UPS25 34 RTD Embedded Technologies, Inc The second major concern when writing ISRs is to make them as short as possible in term of execution time. Spending long times in interrupt service routines may mean that other important interrupts are not serviced. Also, if you spend too long in your ISR, it may be called again before you have exited. This will lead to your computer h

• rtd UPS25, UPS25 3 RTD Embedded Technologies, Inc Revision History 10/08/2000 HW Release 1.0 10/07/2001 Name of company corrected Rev A New manual naming convention Rev B Removed reference to EFAN; Included hot-swap warning Rev C Removed information about J12 Published by: RTD Embedded Technologies, Inc. 103 Innovation Blvd. State College, PA 16803-0906 Copyright 1999, 2002, 2003, 2004, 2005 by RTD Embedded Technologies, Inc. All rights reserved Printed in U.S.A. The RTD Logo is a registered trademark of RTD Embedded Technologies. cpuModule and utilit

• rtd UPS25, UPS25 8 RTD Embedded Technologies, Inc Power supply unit The UPS25 uninterruptible power supply unit is designed to provide a complete backup system for your embedded computer and its peripherals. Battery charging power is generated using a wide input voltage range (8 to 40V DC) step down converter with a maximum charging output power of 25W. Battery charging power is converted from this output using a second step-up DC/DC converter. This scheme will enable charging of the batteries at +12V, while operati

• rtd UPS25, UPS25 19 RTD Embedded Technologies, Inc Connector descriptions: • VIN: Raw input power to the UPS25. Input voltage ranges 10-40V DC This input is fed to the power supply through the UPS25 in normal operation mode (no backup from the battery pack). Note: The module input power may be 5 Amp peak, this will require a cable wire diameter of 1,5 sq. mm. Make sure this input wire is kept as short as possible to reduce voltage drops and interference. • Batt: Connect your external 8 AA-size 1500mAh Ni-MH or 1000mAh Ni-Cd battery pack here. Batt- is c

• rtd UPS25, UPS25 31 RTD Embedded Technologies, Inc Interrupt request lines To allow different peripheral devices to generate interrupts on the same computer, the PC AT bus has interrupt request channels (IRQs). A rising edge transition on one of these lines will be latched into the interrupt controller. The interrupt controller checks to see if the interrupts are to be acknowledged from that IRQ and, if another interrupt is being processed, it decides if the new request should supercede the one in progress or if it has to wait until the one in progress has been completed. The priority level of th

• rtd UPS25, UPS25 7 RTD Embedded Technologies, Inc Chapter 1 - INTRODUCTION This user’s manual describes the operation of the UPS25 versatile uninterruptible power supply unit for automotive and industrial applications. Features Some of the key features of the UPS25 include: • Compatible with RTD power supplies • Wide input voltage range 10-40V DC • Battery currents to 5 Amps • Maximum 20W charge power with adequate cooling 75% total efficiency • -40 to +85C ambient operating temperature • Battery backup �

• rtd UPS25, UPS25 25 RTD Embedded Technologies, Inc If top off mode is enabled the charger will pulse charge for a period of 5 seconds and rest for 30 seconds. This mode will ensure that maximum charging capacity is reached. For long term maintaining of the charge of the backup battery a special trickle mode is supported by the UPS25. This state is entered after all other charge modes are complete. In the trickle mode the battery is charged with a constant C/36 current if the charger circuitry is powered with a Ni-MH conf

• rtd UPS25, UPS25 23 RTD Embedded Technologies, Inc Ni-Mh\Ni-Cd battery charger To ensure long battery life and reliable charging a special battery charger circuitry is used based on the BQ2003 versatile battery charger chip. This chip is used in “gated charge mode” where the charger disconnects the supply from the battery based on the current state of the charging algorithm. State output of the charger chip can be monitored using LED labeled L3 or by interrogating the charger status register bit #2. Below is a table illustrating the different states indicated by the “charger status” LED L3. Charge Action State Charge status LOW Charge status HIG

• rtd UPS25, UPS25 24 RTD Embedded Technologies, Inc Discharging can also be initiated by setting the discharge bit #1 in the control register to a high, and bringing this bit to low again. Care must be taken not to overheat your system since the discharged battery power is converted to heat directly into the metal heat sink. Only discharge when the ambient temperature is low enough, or when adequate cooling is present. In any case Ni-MH batteries do not require as critically periodical discharging a

• UPS25 14 RTD Embedded Technologies, Inc BASE ADDRESS JUMPER SETTINGS UPS25 Base address Hex Jumper settings A8 A7 A6 200 0 0 0 240 0 0 1 280 0 1 0 2C0 0 1 1 300 1 0 0 340 1 0 1 380 1 1 0 3C0 1 1 1 0 = JUMPER OFF 1 = JUMPER CLOSED Table 2-2 Base address jumper s

• rtd UPS25, UPS25 37 RTD Embedded Technologies, Inc Chapter 6 - UPS25 SPECIFICATIONS Host interface 16-bit PC/104 bus Power supply specifications Input voltage range 10-40V DC Output charge Power 25W continuous Efficiency 75% aggregate efficiency Reverse voltage protection -40V DC Over voltage clamp voltage +39V DC Charger and batteries Battery technology Ni-MH part # UPS25-1 Ni-Cd part # UPS25-2 Required cell count 8 Nominal batte

• rtd UPS25, UPS25 Uninterruptible power supply and Ni-Mh/Ni-Cd charger unit User’s Manual BDM-610020008 Rev. C I I S S O O 9 9 0 0 0 0 1 1 a a n n d d A A S S 9 9 1 1 0 0 0 0 C C e e r r t t i i f f i i e e d d

• rtd UPS25, UPS25 9 RTD Embedded Technologies, Inc What comes with your board Your UPS25 package contains the following items: • UPS25 board with mating connectors for the supported power connections • User's manual Note: Software and drivers can be downloaded from our website. If any item is missing or damaged, please send an EMAIL to RTD Embedded Systems, Inc. sales service department at <[email protected] >.

• UPS25 35 RTD Embedded Technologies, Inc Before you install your ISR, temporarily mask out the IRQ you will be using. This prevents the IRQ from requesting an interrupt while you are installing and initializing your ISR. To mask the IRQ, read the current IMR at I/O port 21h, and set the bit that corresponds to the IRQ. The IMR is arranged so that bit 0 is for IRQ0 and bit 7 is fo

• UPS25 15 RTD Embedded Technologies, Inc Host interrupt (Factory setting: Not Connected) The header connector, shown in Figure 2-3 below, lets you connect the onboard control logic interrupt outputs to one of the interrupt channels available on the host computer XT/AT bus. Fig. 2-3 Interrupt jumpers from left to right: IRQ 2,5,7,10,11,12,15

• rtd UPS25, UPS25 10 RTD Embedded Technologies, Inc Using this manual This manual is intended to help you install your new UPS25 module and get it working quickly, while also providing enough detail about the board and it's functions so that you can enjoy maximum use of it's features even in the most demanding applications. When you need help This manual and all the example programs will provide you with enough information to fully utilize all the features on this board. If you have any problems installing or using this board, contact our Technical Support department at <tec

• rtd UPS25, UPS25 40 RTD Embedded Technologies, Inc LIMITED WARRANTY RTD Embedded Technologies, Inc. warrants the hardware and software products it manufactures and produces to be free from defects in materials and workmanship for one year following the date of shipment from RTD Embedded Technologies, INC. This warranty is limited to the original purchaser of product and is not transferable. During the one-year warranty period, RTD Embedded Technologies will repair or replace, at its option, any defective products or parts at no additional charge, provided that the product is returned, shipping prepaid, to RTD Embedded Technologie

• rtd UPS25, UPS25 38 RTD Embedded Technologies, Inc Chapter 7 - RETURN POLICY AND WARRANTY Return Policy If you wish to return a product to the factory for service, please follow this procedure: Read the Limited Warranty to become familiar with our warranty policy. Contact the factory for a Return Merchandise Authorization (RMA) number. Please have the following available: • Complete board name • Board serial number • A detailed description of the board’s behavior List the name of a contact person, familiar with the technical details of the problem or situation, along with their phone and fax numbers, address, and e-mail address (if available). List your shipping

• rtd UPS25, UPS25 11 RTD Embedded Technologies, Inc Chapter 2 - BOARD SETTINGS The UPS25 board has jumper settings, which can be changed to suit your application and host computer configuration. The factory settings are listed and shown in the diagram at the beginning of this chapter. Make sure you completely study and understand this chapter before making changed to these settings. Factory-Configured Jumper Settings

• rtd UPS25, UPS25 4 RTD Embedded Technologies, Inc TABLE OF CONTENTS CHAPTER 1 - INTRODUCTION ............................................................................... 7 Features........................................................................................................................................................................7 Some of the key features of the UPS25 include: ...................................................................................................7 Power supply unit.................

• rtd UPS25, UPS25 26 RTD Embedded Technologies, Inc Voltage monitors There are two independent voltage monitors on the UPS25. One continuously monitors for the presence/level of the main supply VIN. If the main supply drops under 10V the UPS25 stops charging and enters backup mode. In case the interrupt output of the control logic is enabled an IRQ is asserted to the host indicating low or failing power. This bit can also be interrogated from the charger status register bit #0 The other voltage

• rtd UPS25, UPS25 13 RTD Embedded Technologies, Inc Base address jumper (Factory setting: 300h) The UPS25 is I/O mapped into the memory space of your host computer. The board occupies a consecutive memory window of 2 bytes starting from the base address. The most common cause of failure when you are first setting up your module is address contention. Some of your computers I/O space is already occupied by other devices and memory resident programs. When the UPS25 attempts to use it's own reserved memory addresses (which are being already used by another peripheral device) erratic performance

• rtd UPS25, UPS25 28 RTD Embedded Technologies, Inc Chapter 5 - BOARD OPERATION AND PROGRAMMING This chapter shows you how to program and use your UPS25. It provides a complete detailed description of the I/O map and a detailed discussion of programming operations to aid you in programming. Defining the Memory Map The memory map of the UPS25 occupies two bytes of host PC I/O space. This window is freely selectable by the user as described in Chapter 2, Table 2-2. After setting the base address you ha

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