background image

Fig. 3

PCB 85254 Location of the wire jumpers S501 - S504 for altering mains voltage and position
of the output fuse F503

5. Battery charging

5.1 Charging the batteries in the battery modules DEM 316 or DEM 317

Once the charging unit has been connected to the battery module correctly, (see Section 3) and the mains
voltage is present the green LEDs (3) LINE VOLTAGE, BATTERY VOLTAGE and CHARGE CURRENT
light up. The charging current is indicated on the LC display (1), if switch (2) is in position A.

The battery is charged with constant charging current of approx. 4 A. As charging is completed, the
charging current decreases rapidly with rising back-e.m.f. of the battery. At the end of charging, the
charging current falls to a small floating current of approx. 1 mA/Ah of the capacity of the battary to the
loaded, a value which is permanently compatible for the battery. This value can vary with older batteries
in particular, amounting to between 0.5 mA and 10 mA per Ah.

Note:

lf the connection is faulty, there is no charging current and the green LED (3) CHARGE
CURRENT does not light up. Please check all connections between the battery and the

charging unit, all fuses and the mains voltage.

The capacity retention of the battery takes place with a constant voltage of 27.3 V at 20

°

C. The charging

voltage is indicated by the LC display (1), if swith (2) is in position V. lf the ambient temperature deviates
from +20

°

C in standby mode, the charging voltage is adapted automatically, depending on the tempera-

ture. The temperature coefficient amounts to -40 mV/

°

C for a 24 V battery.

Note:

The charging unit is designed for the connection to one battery module. A parallel
connection of batteries is not recommended. 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 DEM 313 is used. In the
event of a faulty fuse, no charging current flows and the green LED (3) CHARGE

CURRENT does not light up.

F 503

S 504

S 503

S 502

S 501

19

Summary of Contents for Pro Matrix System DEM 313

Page 1: ...tegrated battery monitoring module with overvoltage protection exhaustive discharge protection mains voltage monitoring battery voltage monitoring charging circuit monitoring LED fault indicator collective failure information via floating contact integrated 3 digit LC display showing charging voltage and charging current temperature tracking of charging voltage in standby mode connector BATTERY CO...

Page 2: ...s been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 15 Do not expose this equipment to dripping or splashing and ensure that no objects filled with liquids such as vases are placed on the equipment 16 To completely disconnect this equipment from the AC Mains disconnect the power plug from the AC r...

Page 3: ...ecycling Disposal Instructions The Wheelie Bin symbol found on the product or in the manual indicates that this product must not be disposed of with other waste It is in our category the manufacturer s responsibility to properly dispose of their waste electrical and electronic equipment WEEE at the end of its life Due to the differences in each EU country s management of WEEE please contact your l...

Page 4: ...19 5 2 Charging other batteries 20 6 Description of function and operation 20 6 1 OVERVOLTAGE protection 21 6 2 LOW VOLTAGE monitoring 21 6 3 LINE VOLTAGE monitoring 21 6 4 BATTERY VOLTAGE monitoring 21 6 5 CHARGE CURRENT monitoring 21 6 6 Protection against reverse voltage and short circuit 21 6 7 Collective failure indication 21 6 8 Volt Ampere meter 22 6 9 Temperature tracking 22 7 Fuses 22 8 G...

Page 5: ...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 ...

Page 6: ...age to be performed by qualified personnel only Attention Before removing the top unit cover the device must have been disconnected from the mains for at least 2 minutes since the capacitors in the device carry hazardous voltage which needs to discharge first For 115V AC operation the mains powerfuse 6 must be replaced by a fuse 2A slo blo T2A A T2A label must be stuck over the T1 A marking above ...

Page 7: ...to between 0 5 mA and 10 mA per Ah Note lf the connection is faulty there is no charging current and the green LED 3 CHARGE CURRENT does not light up Please check all connections between the battery and the charging unit all fuses and the mains voltage The capacity retention of the battery takes place with a constant voltage of 27 3 V at 20 C The charging voltage is indicated by the LC display 1 i...

Page 8: ...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 Short circuit proof installation of battery cables must be observed in particular and precautions against the risk of explosion must be ...

Page 9: ...tion 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 is for monitoring the battery charge circuit Errors like broken wires or missing batteries are recognized When the battery charge current falls below the threshold of 150mA 25mA solder change able the battery charger briefly loads the battery to check whether a mini...

Page 10: ...mensions of all the fuses in the unit are 5 x 20 mm and must correspond with IEC 127 Fuse holder 4 mains power fuse for mains connector see page 2 T4A 250V Fuse holder 6 mains power fuse for 230V ac see page 2 T1A 250V Fuse holder 6 mains power fuse for 11 5V ac see page 2 T2A 250V PCB 85254 F503 output fuse CHARGE OUTPUT see Figure 3 T4A 250V 8 Glossary Continuous battery power supply standby ope...

Page 11: ...nt of the charging voltage 40 mV C Ripple at nominal operation 0 1 Static mains control at input deviations of l0 15 0 05 Nominal charging current 4 A Current limitation approx 4 A Standby current at power failure 110 mA Switching frequency 88 kHz l0 Efficiency approx 83 Failure detection OVERVOLTAGE 29 6 V Failure detection at battery LOW VOLTAGE 25 5 V operation mode charging Failure detection a...

Page 12: ...24 ...

Page 13: ...ng 45 D 94315 Straubing Germany Phone 49 9421 706 0 Fax 49 9421 706 265 Asia Pacific Rim Headquarter Asia Singapore Telex Communications SEA Pte Ltd 38C Jalan Pemimpin Singapore 577180 Tel 65 6319 0621 Fax 65 6319 0620 Japan EVI Audio Japan Ltd 5 3 8 Funabashi Setagaya Ku Tokyo Japan 156 0055 Phone 81 3 5316 5020 Fax 81 3 5316 5031 Hong Kong Telex EVI Audio HK Ltd Unit 5 1 F Topsail Plaza 11 On Sh...

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