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OWNER’S MANUAL
CHARGING UNIT DEM 313
Features
— fully automatic charging unit 24V/4A for constant I/U battery charging in continuous battery power
supply mode
— regulation of charging voltage with high-efficiency primary switched chopper regulator
— charging output with short-circuit and reverse voltage protection
— integrated battery monitoring module with overvoltage protection, exhaustive discharge protection,
mains voltage monitoring, battery voltage monitoring, charging circuit monitorin
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IMPORTANT SAFETY INSTRUCTIONS The lightning flash with arrowhead symbol, within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintance (servicing) instructions in the literature accompanying the a
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1 3-digit LC display for charging voltage or charging current 2 LC display switch showing the charging voltage in V or the charging current in A 3 LED function and failure indications: Failure indication for overvoltage OVERVOLTAGE Failure indication for low voltage LOW VOLTAGE Function indication for mains voltage LINE VOLTAGE Function indication for battery voltage BATTERY VOLTAGE Function indication for charging current CHARGE CURRENT 4. Fuse for mains output socket 5 Mains output socket MA
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LIST OF CONTENTS SAFETY INSTRUCTIONS / SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 1. Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2. Installation instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3. Before commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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1. Application The charging unit DEM 313 was especially designed for fully automatic charging and monitoring of batteries in the emergency power supplies of alarm devices. In conjunction with the battery modules DEM 316 with 38 Ah or DEM 317 with 65 Ah rated capacity, this combination results in a reliable and failsafe emergency power source for continuous battery power supply operation. The integrated monitoring module ensures permanent battery monitoring. 2. Installation instructions The airf
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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. 2 Connections of the BATTERY CONTROL pin connector Note The switch rating of the failure signal output amounts to max. 30V dc / 0.IA . The contacts 2, 3 and 13 ar
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F 503 S 504 S 503 S 502 S 501 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)
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- max. value - rated value - min. 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 DEM 313. 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
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6.1 OVERVOLTAGE protection This circuit monitors the value of the output voltage of the charging unit. lf the output voltage exceeds the pre-set upper threshold, the red LED OVERVOLTAGE lights up, the charging unit is disconnected from battery and consumers automatically, activating the error message. Thereby the battery remains connec- ted to the consumer, supplying it until the failure has been remedied. This proection circuit prevents an inadmissible increase of the battery voltage and the r
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6.8 Volt-/Amperemeter A 3-digit LC display (1) with toggle switch (2) is provided for measurement of the battery voltage or the charging current. With the switch V/A at the front panel in position V, the battery vollage is shown. Likewise the charging current is shown with the switch in position A. 6.9 Temperature tracking The charging voltage requires battery-adapted temperature tracking in conjunction with operation under ambient temperatures between +5°C .. +40°C. The temperature is to be m
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9. Approvals and standards - The charging units correspond to the following standards: EN 55014-2 Immunity requirements for household appliances, electric tools and similar electrical appliances EN 50082-1 Basic standard for interference rejection; living area, business areas as well as small enterprises EN 60065 Safety requirements for mains-operated electronic appliances and related accessories for house hold use and similar general application EN 60742 Regulations for isolation transfor
