C 2 Power Options 977995 ZonicBook618E Users Manual Internal switch SW2 is

C 2 power options 977995 zonicbook618e users manual

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C-2 Power Options 977995 ZonicBook/618E User’s Manual
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Internal switch SW2 is located on the printed circuit board, near the front center of the unit. To change or verify the mode: 1. Remove DBK30A’s cover by removing one screw and sliding the cover forward until it separates from the module. 2. Look near the front center of the circuit board and locate slide switch SW2. 3. Check SW2’s selection. The silkscreen indicates the 14 and 28 VDC positions. 4. Change the selection, if required. If you do not need 28 V, SW2 should be in the default position (14 VDC). 5. Replace the top cover, and secure with screw. Power Connection. The figure shows the pinout for the POWER OUT DIN5 connector. The 28 V pin is only active in the 28 VDC mode; however, the 14 V pin is active regardless of the mode selected. The CA-115 cable connects to DBK30A’s POWER OUT connector and to the ZonicBook/618E’s POWER IN connector. The cable can be used to daisy-chain a DBK30A unit to a WBK expansion module. DIN5 Power Out +14 V +28 V GND 28 VDC Mode. The primary purpose of the 28 VDC mode is to provide power for external loop transmitters. The hookup is simple, as shown below. WaveBook 2-Wire T/C XMTR 2-Wire Flow XMTR T/C 4-20 mA 4-20 mA COM + + 250 250 N N Connecting Loop Transmitters Another use of the 28 VDC mode is to provide excitation for bridge-type sensors, such as load cells (strain gages) and other devices that may be attached to 5B modules inside a WBK15 module. Excitation voltage from DBK30A is not regulated by the unit, and must therefore be regulated externally. For most load cells, excitation voltage should be regulated to 10 V. Charging To charge the DBK30A batteries: 1. Connect the adapter to DBK30A’s POWER IN connector. 2. Plug the adapter into the AC power receptacle. Note that the charge cycle will begin automatically whenever AC power is applied after an interruption. The charge cycle will automatically end when the batteries are fully charged. Charging DBK30A’s Batteries Appendix C 977995 Power Options C-3
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3. To manually initiate a charge cycle, press the START CHARGE momentary rocker-arm switch. Note that subsequent charge cycles applied to a fully-charged DBK30A will have no ill effect. The module will sense the fully-charged status and revert to the trickle-charge state within a few minutes. Three LEDs on the DBK30A provide status information on the charging process or the external load. LED Indicators & Descriptions POWER IN Indicates the charger is connected to a source of AC power and to the battery module. BATTERY CHARGING Steady Light - Indicates the battery is in the high-current (2 A) charge mode. Flashing - One or two flashes at a time indicates the batteries are fully charged. POWER OUT Indicates power is flowing out to an external device, such as a ZonicBook/618E. Periodically, fully discharge the DBK30A to inhibit “lazy chemistry” (memory) in the nickel-cadmium cells. To manually discharge a battery pack, you can connect a ZonicBook/618E to the pack and leave it powered-on until the indicator lights go out.
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