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Transcript
3720 ACM I.C. Installation Instructions (EPROM & PROM) Danger During normal operation of this device, hazardous voltages are present which can cause severe injury or death. These voltages are present on the terminal strips of the device and throughout the connected potential transformer (PT), current transformer (CT), status input, relay, and control power circuits. Installation and servicing should be performed only by qualified, properly trained personnel. See the Installation and Operation Manual for the specific device for additional warnings. Warning This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance with the instructions manual, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A computing device pursuant to Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment. Operation of this equipment in a residential area may cause interference in which case the operator will be required to take whatever measures may be required to correct the interference. Limitation of Liability Power Measurement Limited reserves the right to make changes in the devices or the device specifications identified in this Retrofit Installation Instructions without notice. Power Measurement Limited advises customers to obtain the latest version of device specifications before placing orders to verify that the information being relied upon by the customer is current. In the absence of written agreement to the contrary Power Measurement Limited assumes no liability for Power Measurement Limited applications assistance, customer's system design, or infringement of patents or copyrights of third parties by or arising from the use of devices described herein. Nor does Power Measurement Limited warrant or represent that any license, either expressed or implied, is granted under any patent right, copyright, or other intellectual property right of Power Measurement Limited covering or relating to any combination, machine, or process in which such device might be used. For further information or technical assistance, please contact your local Power Measurement representative, or Customer Service at one of the following locations: World Wide Web www.pml.com E-Mail [email protected] Worldwide Headquarters POWER MEASUREMENT LTD. 2195 Keating Cross Rd., Saanichton, B.C., Canada V8M 2A5 Tel:1-250-652-7101 Fax:1-250-652-0411 Europe & Middle East POWER MEASUREMENT EUROPE Bayreuther Str. 6 D-91301 Forchheim Germany Tel: 49-9191-7005-25 Fax: 49-9191-7005-20 Asia & Pacific POWER MEASUREMENT AUSTRALIA Unit 7/16 Ledgar Road, Balcatta, Perth, Western Australia 6021 Tel:61-89-345-3866 Fax:61-89-345-3899 EXCEPT TO THE EXTENT PROHIBITED BY APPLICABLE LAW, UNDER NO CIRCUMSTANCES SHALL POWER MEASUREMENT LIMITED BE LIABLE FOR CONSEQUENTIAL DAMAGES SUSTAINED IN CONNECTION WITH SAID PRODUCT AND POWER MEASUREMENT LIMITED NEITHER ASSUMES NOR AUTHORIZES ANY REPRESENTATIVE OR OTHER PERSON TO ASSUME FOR IT ANY OBLIGATION OR LIABILITY OTHER THAN SUCH AS IS EXPRESSLY SET FORTH HEREIN. ISO 9002-94 Registration Cert # 002188 Revision Date: June 8, 2000 © 2000 Power Measurement Ltd. All rights reserved Printed in Canada 70050-0017-01 1. INTRODUCTION This document provides step-by-step instructions for the upgrade or replacement of the EPROM and PROM integrated circuits in the 3720 ACM. An integrated circuit, sometimes referred to as an I.C. or chip, is a small electronic part which resides on the main circuit board inside the 3720 ACM. The EPROM and PROM I.C.s of the 3720 ACM can be replaced in the field for the purpose of feature upgrades. This document describes the procedure for replacement of either or both of these I.C.s. PROM The PROM (Programmable Read Only Memory) is a 20-pin type I.C. which the 3720 ACM uses to perform other operational functions. In some cases, a firmware upgrade performed on a 3720 ACM unit will require the replacement of both the EPROM and the PROM I.C.'s. The need to replace the PROM will be dependent on the level of firmware upgrade being performed. 3. VERIFYING FIRMWARE VERSIONS & I.C. TYPES CAUTION ! It is important that all instructions provided in this document are performed exactly as described to ensure the 3720 ACM is protected from any damage. It is recommended that installation be performed by a trained technician or personnel familiar with I.C. installation procedures. 2. REASONS FOR I.C. REPLACEMENT EPROM The 3720 ACM uses an on-board microprocessor to perform all its measurement and calculation tasks. The microprocessor operates by following the program of instructions stored in an integrated circuit called an EPROM (Erasable Programmable Read Only Memory). This I.C. is either a 28-pin or 32-pin type. During the life of the 3720 ACM, PML may design new performance or functional enhancements into the program which runs the unit's microprocessor. These features will be made available to the user and may be incorporated into any existing unit through the simple replacement of the unit's EPROM. It is important that the technician verifies that the replacement I.C.(s) received from PML are the correct type(s) for the product being upgraded. The following sections describe this procedure. 3.1 EPROM VERIFICATION EPROM Labelling If the user is performing a firmware upgrade, the enclosed replacement EPROM I.C. will be labelled as follows: 3720 ACM V X.X.X.X where V = standard or custom firmware (V indicates standard firmware. Any other prefix indicates custom firmware or special software options) X.X.X.X = firmware version (4-digit number indicates the specific version of the program contained in the EPROM) Power Measurement 3720 ACM I.C. Installation Instructions 1 Firmware Version 3.2 PROM VERIFICATION The technician must ensure that the firmware version number of the replacement EPROM is greater than that of the currently installed EPROM. For example, a version V1.0.0.1 would replace a version V1.0.0.0. Upgrade Level As described above, if an EPROM I.C. replacement is being performed on a 3720 ACM, the level of firmware upgrade will determine whether the PROM I.C. must also be replaced. IMPORTANT NOTE Do not under any circumstances install a new EPROM that is not labelled with a greater firmware version number. The technician can view the current revision of firmware in one of two ways: 1. 2. Figure 1 lists the firmware upgrades that also require a PROM replacement, and the new PROM revision number required. If a PROM I.C. replacement is required, PML will automatically ship the required PROM with the EPROM upgrade kit. If, for any reason, the required PROM has not been supplied, contact PML for a replacement. PROM Labelling From the front panel display in programming mode (refer to the Operation Manual for the 3720 ACM). Each PROM is labelled as follows: Directly from the label on the EPROM once the rear panel of the unit has been removed. This is described later in this document. 3720 ACM PCB X.X Rev Y.Y where If the EPROM supplied does not have a greater revision number, contact PML or your local PML sales representative to acquire the correct firmware revision. X.X = printed circuit board version (2-digit number indicates the 3720 ACM circuit board version. This number can be ignored.) Y.Y = PROM revision (2-digit number indicates the the specific version of the program contained in the PROM.) Check the PROM revision number against the numbers listed in Figure 1 to ensure the correct replacement PROM has been supplied. Old Firmware (EPROM) Revision Required PROM Upgrade Revision 1.0.X.X 1.1.X.X Rev 1.0 1.1.X.X 1.2.X.X Rev 2.0 1.2.X.X or 1.3.X.X 1.4.X.X Rev 4.0 1.X.X.X 1.5.X.X Rev 5.0 Figure 1 2 New (upgraded) Firmware Revision Required PROM Revisions for 3720 ACM Firmware Upgrades Power Measurement 3720 ACM I.C. Installation Instructions 4. INSTALLATION PROCEDURE 4.1 REQUIRED TOOLS 4.3 BEFORE PROCEDING The technician will require the following tools to perform the installation: 1) Medium Phillips head screwdriver. 2) Anti-static wrist strap or equivalent protection. 3) I.C. extraction tool, or small flat-head screwdriver. 4) I.C. insertion tool. Use of an I.C. insertion tool is strongly recommended but not necessary. This tool must be pin and row spacing compatible with the type of integrated circuit being installed. EPROMs are 32pin at 0.6" spacing. PROMs are 20-pin at 0.3" spacing. 4.2 PREPARING THE 3720 ACM DANGER During normal operation of this device, hazardous voltages are present which can cause severe injury or death. These voltages are present on the terminal strips of the device and throughout the connected potential transformer (PT), current transformer (CT), status input, relay, and control power circuits. Installation and servicing should be performed only by qualified, properly trained personnel. 1. Open all PT fuses (or direct voltage input fuses) and close all CT shorting blocks. 2. Turn off power to the 3720 ACM and disconnect the Line and Neutral (or DC power) wires from the POWER inputs to the unit. 3. Disconnect (or power off) all other wiring which may present potentially hazardous voltage levels to the unit, such as connections to the relay outputs, status inputs, etc. 4. REMOVING THE REAR COVER The components inside the 3720 ACM are extremely sensitive to static-electric discharge. To prevent damage to the unit, an anti-static wrist strap (or equivalent) must be worn at all times when working inside the unit enclosure. Before executing the following instructions, attach a wrist strap to either wrist, and connect the wrist strap cable to the closest earth ground point. The rear cover of the 3720 ACM can be removed while the unit is still mounted in its switchgear panel (or other mounting location). First remove the four chassis screws of the 3720 ACM. Then remove the cover by pulling the cover straight away from the chassis. This communications card installed in the device will cause some resistance to be felt as the connector which connects the card to the main circuit board is disconnected when the rear cover is pulled away from the chassis. This is normal, and should not cause concern. 4.4 LOCATING AND IDENTIFYING THE EPROM, PROM & NVRAM The I.C.'s to be replaced can be found along the edge of the main circuit board inside the chassis. Figure 2 illustrates the locations of the EPROM and PROM. Each I.C. is installed in an I.C. socket. Note that each pin of the I.C. fits into an individual pin contact. If the technician did not previously check the currently installed firmware revision number from the front panel of the unit, this can be determined from the label on the EPROM. 4.5 I.C. ORIENTATION Note the orientation of each I.C. in its socket. The notched end of each I.C. faces the outside edge of the circuit board (see Figures 2 and 3). Double check to ensure all cables still connected to the 3720 ACM are not live. IMPORTANT - READ THIS Power Measurement 3720 ACM I.C. Installation Instructions 3 EPROM U04 1.1 PROM U07 Figure 2 3720 ACM Main Circuit Board EPROM Side View of Pins EPROM Installation PROM Installation Notch Notch Notch 32-pin EPROM in 32-pin socket 20-pin PROM in a 20-pin socket Pins Figure 3 4.6 I.C. Installation I.C. REMOVAL Find the I.C. on the main board that is to be replaced. Using an I.C. extraction tool, or a small flat-head screwdriver, carefully remove the I.C. from its socket as follows: a) Extraction Tool Method. The I.C. should be pulled evenly from each end to ensure its pins are not bent when removed from the socket. 4 Power Measurement 3720 ACM I.C. Installation Instructions b) Screwdriver Method. Insert the screwdriver between the socket and I.C. at one end and pry up a small amount to ensure pins are not bent. Repeat this at each end until the I.C. is dislodged. Once removed, place the I.C. immediately into an antistatic tube or in anti-static foam for shipping. 4.7 into each contact of the socket. Ensure the I.C. is seated evenly and fully down in the socket when complete. I.C. INSERTION The new EPROM or PROM I.C. can now be installed into its corresponding socket. 3. Make a close visual inspection of each pin of the I.C. to check if any pins were bent on installation. Note that if an I.C. has been installed incorrectly, some pins can sometimes be bent inwards underneath the I.C. and may be difficult to see. 4. Check again that the I.C. is oriented correctly. IMPORTANT The I.C. must be installed in the same orientation as described in Section 4.5 above. 4.8 Using an I.C. Insertion Tool FINAL STEPS 1. It is highly recommended that the new I.C. be installed using an I.C. insertion tool. This will ease installation and ensure that no I.C. pins are bent when the I.C. is inserted into its socket. Instructions for using an insertion tool should be supplied with the tool itself. The installer should check that all I.C. pins are aligned and straight prior to using the insertion tool to install the I.C. Reinstall the rear cover of the 3720 ACM. It is important to keep the cover aligned as it is mated to the chassis. This will help to align the communications card connector to its mating connector on the main board. Some resistance will be felt as the card connector is reconnected. 2. Reinstall all four chassis screws with their lockwashers. Inserting an I.C. without an Insertion Tool 3. Reinstall the Line and Neutral (or DC power) wiring to the POWER inputs of the unit. The I.C. may also be installed without the use of an insertion tool; however, the following procedure should be used to ensure that no pins are bent: 4. Turn on power, and verify that the display initiates correctly, and/or the unit communicates with the Master Display Station. If not, recheck the I.C. installation(s). 5. Close the PT fuses (or direct voltage input fuses) and open the CT shorting blocks. 6. Reconnect (or re-enable) all other wiring and verify the correct operation of the unit. 1. 2. Check that all pins are straight, then position the I.C. over the socket and check if both rows of pins align with the contacts of the socket. If the pins do not align, carefully bend either row of pins evenly inwards by a small amount by pressing against a flat surface (eg. tabletop). Recheck pin alignment with the socket, check for correct orientation, then press firmly and evenly down on the top of the I.C.. Using a slight rocking motion (end-to-end) will aid in aligning and pushing the pins The new firmware revision number can be viewed from the front panel display in programming mode (refer to the Operation Manual for the 3720 ACM). Power Measurement 3720 ACM I.C. Installation Instructions 5 |70050-0017-01s~ Revision date: June 8, 2000