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Summary of Contents for Sens F3 SERIES
- Page 1 SERIES CASE SIZE 3A FILTERED BATTERY CHARGER OPERATION & MAINTENANCE MANUAL SENS part no.: 101146 Document revision: DCN number 103681 Date 8/16/01 1840 Industrial Circle Longmont, CO 80501 Fax: (303) 678-7504 Tel: (303) 678-7500...
- Page 2 F3 Series Charger Manual Installation or Service problems? Call SENS at (800) 742-2326 between 8:00 am and 5:00 pm Mountain time Monday through Friday...
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Page 3: Important Safety Instructions
• To reduce risk of electric shock, de-energize and disconnect the AC input and the battery from the charger before attempting maintenance or cleaning. • Use of an accessory not recommended or sold by SENS may result in a risk of fire, electric shock or personal injury. -
Page 4: Installation
F3 Series Charger Manual charger. If you have any doubts about adjusting, maintaining or servicing the equipment, contact SENS service department. Changing factory-set potentiometers voids the warranty. Contact the factory if you believe that the settings on your charger are incorrect.Before determining that the charger is not working correctly, check the following: 1. -
Page 5: Power Connections
F3 Series Charger Manual WHEN INSTALLING DO NOT LIFT UNIT FROM MIDDLE OF LOWER COVER - THE COVER WILL BEND. USE A SPREADER PLATE EQUIVALENT TO 1" THICK PLYWOOD ACROSS THE BOTTOM OF THE UNIT WHEN LIFTING The charger can be mounted either on a wall or in a standard 23”... - Page 6 F3 Series Charger Manual DC OUTPUT AC INPUT ØA ØB ØC Connection should be made by a qualified installer in accordance with national and local electrical codes. The installer should determine the gauge of wire to be used based on the length of cable run and the ampere requirements of the charger.
- Page 7 F3 Series Charger Manual F3 chargers are supplied with one of three following alarms configurations: TABLE 2.3 Charger Part Number Suffix and Alarms Configuration Second digit of part number suffix (e.g. "F5E2") Alarms “0” Alarms “5” Alarms “6” < Alarm system code...
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Page 8: Operation
The SENS remote sensor is optional. The control board automatically selects the remote sensor over the local sensor. If the remote sensor is damaged or disconnected temperature sensing automatically reverts to local. - Page 9 If all of the above appear to be in order, contact SENS at the toll-free service number on the front of this document for assistance in troubleshooting. 3.2...
- Page 10 F3 Series Charger Manual Alarm Indications NOTE: Chargers are equipped with a “dead-front” panel. Alarm LEDs are behind the dead front panel and will be visible when they illuminate due to an alarm condition, or when the TEST button is pressed. See Figure 3.5 for the location of LED indicators.
- Page 11 F3 Series Charger Manual FIGURE 3.4 LED Indicators on Charger Front Panel LAMP TEST AC ON AC FAIL CHGR FAIL + GROUND LOW DC - GROUND BOOST HIGH DC FLOAT SHUTDOWN AC ON Indicates that AC power is being supplied to the charger.
- Page 12 To adjust the charger for a different type of battery (e.g. from lead-acid to nickel-cadmium) c) If your battery is consistently being over-charged or under-charged NOTE: Unless authorized by SENS, any charger adjustment, including output voltage adjustment, voids the warranty.
- Page 13 F3 Series Charger Manual Adjustment of the BOOST voltage is similar to adjustment of FLOAT, except that you adjust the BOOST pot instead of the FLOAT pot. Be sure that the charger front panel mode switch is in BOOST when you make adjustments.
- Page 14 F3 Series Charger Manual 2.55 VRLA Float VRLA Boost 2.45 Flooded Float 2.35 Flooded Boost 2.25 HV Alm VRLA 2.15 HV Shtdn VRLA 1.85 HV Alm Flooded 1.75 HV Shtdn Flooded Low DC Alarm Degrees C...
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Page 15: Troubleshooting Table
F3 Series Charger Manual Forced Load Sharing Chargers can be set up for forced load sharing when used in parallel with units of the same current rating. Forced load sharing causes the chargers to share the load from light loading to full load except when either charger is in BOOST mode (whether activated manually or via the AUTOBOOST system) or if either charger is operating in current limit. - Page 16 F3 Series Charger Manual Check for vertical mounting of Mount charger vertically charger Verity that room temperature is Reduce room temperature less than 50 C Verity that AC input voltage is Contact utility company not higher than charger's specified operating range...
- Page 17 F3 Series Charger Manual Using a digital multimeter set to the diode testing function, measure the junction voltage across the diode. A reading of between 0.4 volt and 0.8 volt in the forward polarity direction and infinity in the reverse polarity direction indicates a good diode.
- Page 18 F3 Series Charger Manual INSERT DIAGRAM OF SCR/DIODE POWER MODULE TROUBLESHOOTING INSTEAD OF THIS PAGE...
- Page 19 F3 Series Charger Manual Introduction Theory of This section provides information on operation, setup and adjustment of the SENS three phase, six Operation- pulse battery charger control circuit. Schematics are included in the back of the manual to assist the reader in understanding the circuits as they are discussed.
- Page 20 F3 Series Charger Manual SCR Firing Circuits - Detail Each power phase requires a firing circuit to fire the rectifying SCRs at precisely the right time for rectification and output control. Since all firing circuits are identical, one phase will be discussed.
- Page 21 F3 Series Charger Manual by switching in resistance, thus changing the gain of the reference voltage op-amp. When the charger is in AUTOBOOST, the current signal is monitored by an op-amp. When output current rises above 70% of the charger’s rating, the charger switches to boost mode where until output demand drops below 50% of rated current.
- Page 22 F3 Series Charger Manual As an added safety feature, the -0.18% temperature compensation slope automatically adjusts to zero slope at approximately 10 degrees C. This clamps the output voltage at the appropriate temperature compensated level to avoid excessive output voltage. This is accomplished by coupling an op-amp tracking circuit to the float/boost reference voltage.
- Page 23 F3 Series Charger Manual Introduction Theory of The alarm/display circuit monitors battery voltage and charger performance. The alarm circuitry Operation-Alarm/ consists of up to eight separate circuits: AC Fail, Charge Fail, High DC, Low DC, Low Voltage Load Disconnect, Ground Fault, Option, and Summary. Note that some of the alarm relays utilize time delays Display of approximately 25 seconds.
- Page 24 F3 Series Charger Manual the fail position. Option Alarm (optional) The Option Alarm has three possible applications depending on how jumper holes A-E are configured. By jumpering B-D and C-E and adjusting potentiometer R34, the alarm will activate above a specified voltage just like the High DC alarm.
- Page 25 F3 Series Charger Manual 7.13 AC On, Float and Boost LED's The AC On LED will light whenever +12 V is sent from the control board through J2 pin 3. Current is sent through R46 thus lighting DN1. The float and boost indicators are controlled by a signal sent from the control board. When this signal is at +12 V, the charger is in float.
- Page 26 F3 Series Charger Manual Appendix Diagram of Automatic Boost Operation (Optional Feature) Boost voltage Float voltage Battery voltage Point at which charger changes from current limit to voltage limit Volts Point at which AUTOBOOST returns charger to float voltage 100% charger...
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