User manual ELECTRO-VOICE 665 DATASHEET

[. . . ] Use of a mains separator transformer is mandatory during maintenance while the appliance is opened, needs to be operated and is connected to the mains 3. Switch off the power before retrofitting any extensions, changing the mains voltage or the output voltage. The minimum distance between parts carrying mains voltage and any accessible metal piece (metal enclosure), respectively between the mains poles has to be 3 mm and needs to be minded at all times. The minimum distance between parts carrying mains voltage and any switches or breakers that are not connected to the mains (secondary parts) has to be 6 mm and needs to be minded at all times. [. . . ] Do not use any sprays to clean the unit, as these can damage it, perhaps causing it to ignite suddenly. 3. Before commissioning Before connecting the unit to the mains, the following connections must be made: · The D-sub connector socket BATTERY CONTROL (9) of the charging unit ist to be connected with the D-sub connector BATTERY CONTROL of the battery module (also see Figure 1 and Section 3. 1). · The CHARGE OUTPUT (8) of the charging unit is to be connected with the charging input CHARGE CURRENT of the battery module. Please observe correct polarity (see Figure 1). The cross-section of the line between the charging unit and the battery module must be at least 2. 5mm2. Insulated AMP flat-pin sleeves 6. 3x0. 8 mm must be used for the connections. The line length must not exceed 2 m. · Another device can be connected at the mains connector MAINS OUTPUT (5), if its power consumption does not exceed 4 A. The mains connector MAINS OUTPUT (5) is protected against overloading by a fuse (4) with the rating T4A. A fuse rating above T4A is not admissible. · lf all connections have been made correctly, the unit can be connected with the mains by means of the supplied power cable. The mains cable is connected at the 3-pole mains connector socket (7) on the unit Attention: The unit is wired to 2 30V AC by the factory. Switching over to 115 V AC is possible via wire jumpers inside the unit, (see Section 4). 17 Fig. 1 Connection of the battery to the charging unit 3. 1 Control connector BATTERY CONTROL Various control input/outputs are available at the 15-pole D-sub pin connector BATTERY CONTROL (9): (Also see Figure 2): - Input temperature sensor +TEMP/-TEMP - Output exhaustive discharge relay +LVR/-LVR - Failure signal output FAILURE Fig. Batteries connected in parallel cannot be monitored. Attention: The charging circuit fuses CHARGE FUSES of the battery modules DEM 315 and DEM 316 must be exchanged for 7. 5 A fuses if the charging unit 665 is used. In the event of a faulty fuse, no charging current flows and the green LED (3) CHARGE CURRENT does not light up. 19 - max. value 5. 2 Charging of other batteries DYNACORD battery modules DEM 316, DEM 317 or other maintenance - free 24V lead-acid batteries with a rated capacity up to 65 Ah can be charged with the charging unit 665. To do so, the charging output CHARGE OUTPUT + (8) is to be connected with the plus pole and the charging output CHARGE OUTPUT - (8) with the negative pole of the battery respectively. For temperature tracking of Ihe charging voltage in standby mode, the temperature sensor (retrofitting kit NRS 90200) must be installed according to the retrofitting instructions and is to be connected with the charging unit (see also Figures 1, 2 and Sections 3. 1, 6. 9). In order to prevent exhaustive discharging of the battery, suitable relays must be used which are to be connected with the charging unit according to Figure 1 or Figure 2. The total coil resistance of the relays may not be below 70 ohms. Attention: VDE 0510 is to be observed for the installation of the batteries. The exhaustive discharge protection only works with the battery modules DEM 315, DEM 316 and DEM 317 (also see Sections 5. 1 and 5. 2). 6. 5 CHARGE CURRENT monitoring This monitors the function of the battery circuit (e. g. lf the battery charging current falls below the adjusted value of approx. 10 mA, the green LE D (3) CHARGE CURRENT goes out and an error message is activated. lf there is no load connected to the battery, the battery charging current may fall below this limiting value. In such cases it is advisable to connect a resistor of 2200 ohms to the battery output. 6. 6 Reverse voltage and short-circuit protection Reverse volltage protection prevents damage which may be caused by possible polarisation errors when the battery is connected to the charging unit. [. . . ] Glossary: - Continuous battery power supply (standby operation) In this mode, the battery is constantly kept at full charge. It only gives off current if the DC source supplied by the mains fails. - Nominal capacity: The nominal capacity is the value in ampere-hours for a 20-hour even, uninterrupted discharge with up to the cutoff voltage of 1. 75 V/cell at a temperature of 22°C. - Capacity: The capacity of a battery is the amount of electricity which can be extracted under the condlitions in question. [. . . ]