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Related Manuals for elv 8500-2 Expert
Summary of Contents for elv 8500-2 Expert
- Page 1 Battery Charging Centre ALC 8500-2 Expert Operating Instructions...
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Page 2: Table Of Contents
Contents: Introduction ........................32 The essential performance features of the ALC 8500-2 Expert ........32 Proper use ........................34 Safety Notes ........................34 Controls, display elements .................... 36 Charge processes, charge outputs ................37 Battery capacities, charge power, currents ..............38 Battery Ri measurement function ................. -
Page 3: Introduction
(NC), Nickel-Metal-Hydride (NiMH), Lead-Gel, Lead-Acid, Lithium-Ion (Li-Ion) and Lithium-Polymer (LiPo). The firmware of the forward-looking ALC 8500-2 Expert can be updated at any time due to the use of flash memory. This means that the software can be expanded and the charger updated to cope with new or changing battery technologies. - Page 4 • Data retention if mains supply fails; automatic program start when the mains supply is res- tored • USB PC interface for controlling the ALC 8500-2 Expert; also for reading out the data logger (galvanically isolated) • Display of cell voltage, charge current, discharge current, charged-in capacity, discharged capacity •...
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Page 5: Proper Use
2 Safety Notes – The ALC 8500-2 Expert is designed to operate on a mains voltage of 220 - 240 V AC, 50 Hz. For this reason it must be handled with exactly the same amount of care as any other mains-powered piece of equipment. - Page 6 Important: charging multiple batteries simultaneously The negative terminals of the ALC 8500-2 Expert’s four charge outputs are not interconnected inter- nally, and therefore are not at the same voltage potential. For this reason it is not permissible to connect batteries to different charge outputs whose negative or positive terminals are connected to each other externally.
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Page 7: Controls, Display Elements
3 Controls, display elements Multi-function LCD screen Mains switch OK / Menu button Cursor button, fl Cursor button, ‡ Battery positive terminal sockets Battery negative terminal sockets Charge output 1 Charge output 2 Charge output 3 Charge output 4 Channel LEDs LED lead-acid activator function Power indicator USB interface (back panel) -
Page 8: Charge Processes, Charge Outputs
To dissipate waste heat during discharge processes the ALC 8500-2 Expert is equipped with an in- ternal heat-sink / cooling fan assembly, and a temperature monitor operates constantly at the output stages to protect the charger from overloading in every situation. -
Page 9: Battery Capacities, Charge Power, Currents
200 mAh to 200 Ah, while charge channels 3 and 4 can work with nominal capacities of 40 mAh to 200 Ah. The essential performance data relating to the ALC 8500-2 Expert is summarised in Table 1 (Chapter 1.1), but please note that the specified performance for NC and NiMH batteries is not based on the nominal battery voltage, but on a cell voltage of 1.5 V. - Page 10 However, these transfer resistances generally remain unchanged relative to each other. For this reason it is always worthwhile carrying out an optimisation process in any high-current application. This invol- ves eliminating unnecessary connectors, and using short cables of generous cross-section wherever possible.
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Page 11: Lead-Acid Activator (Reviver) Function
Sulphate deposits are the primary reason for the premature failure of lead-acid batteries. The Activator function can be set to switch in automatically if desired, as soon as the ALC 8500-2 Expert switches to trickle charge mode when charging a lead-acid battery Periodic pulses of peak current prevent the build-up of sulphate deposits on the lead plates. -
Page 12: Data Logger
10.1 Basic settings The ALC 8500-2 Expert is switched on by pressing the mains switch located at bottom left of the front panel. First a brief initialisation phase occurs, during which the top half of the screen displays all the available segments, while the bottom (graphic) area displays the ALC 8500-2 name and the current version of the firmware. - Page 13 The detailed information displayed is as follows: the battery technology (type) selected for the function currently running, the battery voltage, the charge current and the capacity of the selected channel. The bottom half of the screen continues to display the overall summary of all four channels. Channel not used Charge Charged (full)
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Page 14: Channel Windows
For example, an accurate time forecast for the Cycle function is impossible, as the ALC 8500-2 Expert cannot predict how many charge / discharge cycles have to be completed before the battery reaches its maximum capacity. -
Page 15: Main Menu
Fig. 8, you do not need to confirm your choice by pressing the “OK / Menu” button. The “B. Resist.” menu provides access to the battery Ri measurement function of the ALC 8500-2 Expert, while the configuration of the charger and the battery to be charged can be set in the “Conf.- Menu”;... -
Page 16: Conf. Bat. (Configuring Batteries)
C/20 C/10 Fig. 15: The fixed pre-set charge rates of the ALC 8500-2 Expert direct (Fig. 18). The battery data input process described above is not ne- cessary if you intend to charge a battery whose data is already stored in the database. -
Page 17: Charge Rates
Fig. 17: Entering the charge / discharge interval Fig. 18: Function select menu 12.3.1 Charge rates C/20: the battery is charged (or discharged) at a very low current corresponding to one twentieth of its nominal capacity. C/10: at this setting the battery is charged (or discharged) at a current corresponding to one tenth of its nominal capacity. -
Page 18: Function
(switched-on) charger for an indefinite period. 12.4.2 Discharge When this function is selected, the battery connected to the ALC 8500-2 Expert is discharged down to the final discharge voltage appropriate to the pack; the capacity removed from the battery is dis- played on the graphic screen. -
Page 19: Refresh
New batteries are not capable of providing their full performance from the very first charge cycle. For this reason the ALC 8500-2 Expert can be set to give a new pack a configurable number of initial charge / discharge cycles in order to bring it up to maximum capacity. The basic rule is that batteries are formed, or balanced, by charging them at reduced current;... -
Page 20: Resist. (Battery Ri Measurement Function)
These problems can be avoided by using pulses of current to measure the internal resis- tance. The current pulses with the ALC 8500-2 Expert are variable within the range 1 A to 10 A, although we recommend selecting as high a current as possible, otherwise - bearing in mind the typically Fig. - Page 21 The higher the internal resistance of the battery, the worse the voltage curve under load conditions, and the more dissipated power is con- verted into heat within the cell and at the parasitic transfer resistance points. At high currents parasitic resistances in the mOhm range can certainly cause considerable voltage losses at the motor or other consumer.
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Page 22: Conf. Menu
Fig. 25: Menu points in the “Conf.-Menu” 14.1 Database A particularly convenient feature of the ALC 8500-2 Expert is the ability to store the nominal data and charge parameters of particular batteries (those which are to be processed regularly) in the machine’s internal database. -
Page 23: Del. Bat
14.1.3 Del. Bat. This function is used to erase batteries which are stored in the database but no longer required. Call up the database, select the battery to be erased using the jog dial or the arrow buttons, then confirm your selection (“OK / Menu”... -
Page 24: Setup Alc
Return “Setup ALC” is a further sub-menu within the configuration menu of the ALC 8500-2 Expert. Confirm your selection with the “OK / Menu” button, and the menu points shown in Fig. 30 are available. -
Page 25: Display Of Charged-In / Discharged Capacity
16 Reading out the data logger on-screen The “ChargeProfessional” PC software is available as a convenient means of reading out the data logger. All the data stored in the ALC 8500-2 Expert’s flash data memory can also be displayed directly on the screen. -
Page 26: Supplementary Notes
The fuse must then be replaced, once you have disconnected the re- versed-polarity battery from the output. If the current delivered by the battery is not enough to blow the fuse, the ALC 8500-2 Expert emits a continuous audible alarm until such time as you disconnect the battery. -
Page 27: Error Messages
18.7 Error messages The ALC 8500-2 Expert incorporates a comprehensive set of safety functions, and automatically halts the current process if any important parameter strays outside the permissible range. After an automatic forced shut-down the screen displays an exclamation mark (“!”) in the overall view (main window). -
Page 28: Maintenance, Care
If the case gets very dirty the cloth can be slightly moistened. Remove all traces of moisture with a dry cloth before re-using the charger. Do not immerse the ALC 8500-2 Expert in water! Do not use solvent-based cleaning agents to clean the charger. -
Page 29: Specification
20 Specification No. of charge channels: ......................... 4 Nominal battery voltage: ........Channels 1 + 2 max. 24 V, channels 3 + 4 max. 12 V Charge current: ........... Channels 1 + 2 max. 5 A (charge power max. 40 VA total) Channels 3 + 4 max.