Dimensions Unlimited 12X16B3R4T Owner'S Manual Download Page 16

 

 

 

Dimensions Unlimited 

16 

Operation and Troubleshooting 

 

7.1  Operation 

 

 

 

The battery voltage must be higher than 9 volts for the SPS to operate.

 

 

7.1.1  Setting the Battery Size and Type:

 The battery selector switch located at 

the right side of the chassis must be set according to the type and size of the battery 

bank the SPS is connected to as shown in table II below. 

 

TABLE II: BATTERY SELECTOR SWITCH POSITION 

DEEP CYCLE BATTERY TYPE 

BATTERY BANK SIZE 

(Amp-Hour) 

SEALED LEAD ACID 

WET LEAD ACID 

More than 400  

Less than 400  

 

TABLE III: BATTERY CHARGER VOLTAGES  

WET CELL BATTERIES 

SEALED BATERIES 

BATTERY 

TEMPERATURE 

°F 

°C 

ACCEPT 

(Volts) 

FLOAT

(Volts)

CONDITIONING

(Volts) 

ACCEPT

(Volts) 

FLOAT 

(Volts) 

CONDITIONING

(Volts) 

78 

25 

14.6 

13.2  14.9 to 15 max.

14.2 

13.2  14.4 to 15 max.

 

TABLE IV: BATTERY CHARGER TIME PERIODS 

WET CELL TYPE BATTERIES 

SEALED TYPE BATTERIES 

BATTERY BANK SIZE 

(Amp-Hour) 

BULK 

(max.) 

ACCEPT

(max.) 

CONDITIONING

(max.) 

BULK 

(max.) 

ACCEPT 

(max.) 

CONDITIONING

(max.) 

Less than 400 

6-hrs. 

2-hrs. 

3-hrs. 

6-hrs. 

2-hrs. 

3-hrs. 

Greater than 400 

8-hrs. 

3-hrs. 

6-hrs. 

8-hrs. 

3-hrs. 

4-hrs. 

 

 

 

If  the  bulk  mode  times-out  the  charging  process  will  go  to  the  float  mode 

immediately bypassing the acceptance mode. 

 

7.1.2  Turning  the  SPS  ON:

  After  correct  installation,  the  built-in  transfer  relay 

automatically switches the SPS to “external power” mode activating the battery charger 

any  time  a  proper  external  AC  voltage  source  is  present.  Setting  the  charger  current 

draw to zero with the LCD Remote Control/Status Panel can turn off the battery charger. 

See figure 2, item (4) page 8. 

 

The “inverter mode” can only be activated when there is no proper voltage external AC 

power  source.  The  inverter  is  turned  ON  or  OFF  by  the  LCD  Remote  Control/Status 

Panel.  See  figure  2,  item  (3)  page  8.  The  inverter  can  be  left  ON  and  the  SPS  will 

automatically cycle back and forth between the battery charger and inverter. However, 

there is a one to two amps draw on the batteries when the inverter is ON and there are 

no AC loads which could discharge the battery(s).  

 

Summary of Contents for 12X16B3R4T

Page 1: ...d Company Dimensions Unlimited Inc DC to AC Standby Power Systems Owners Manual for Models 12X16B3R4T 12X20B3R4T 12X25B3R4T 12X30B3R4T 12X36B3R4T Including Options R1 LCD Remote Control Status Panel w...

Page 2: ...llation 9 5 1 Tools Needed for Installation 9 5 2 System Components 9 5 3 Mounting the SPS 9 5 3 1 Chassis Bonding Lug 9 5 3 2 Temperature Compensation Sense Probe 9 5 3 3 Connecting the LCD Remote Co...

Page 3: ...ounted in a location that may be exposed to rain or spray The Standby Power Systems should not be installed in a zero clearance enclosure Damage to the Standby Power Systems will occur if correct pola...

Page 4: ...RELAY T Fail safe shore power Transfer Relay Current Rating Amps AC 30 Transfer Time milliseconds Less than 16 typical Output Voltage VAC 120 RMS 5 Output Frequency 60 Hz 0 05 Output Waveform Quasi si...

Page 5: ...the transformer which steps the voltage up to 120 volts The unit has a Digital System Processor DSP to control the output voltage and frequency as the DC input voltage and or output load varies The s...

Page 6: ...he plates of the battery cells The SPS has an automatic power sharing feature that automatically decreases the battery charger output so that the total AC input current draw by the SPS for both the AC...

Page 7: ...put Output lead wires and DC field wiring compartment 3 Remote Control Panel Connector Connects to the LCD Remote Control Status Panel 4 Temperature Compensation Sensor Connector Connects to the remot...

Page 8: ...ery charger 5 LCD Display Shows system status battery voltage and electrical current in both inverter and external power mode as well as shut down conditions 6 DC Master Disconnect switch control wire...

Page 9: ...eing in the same airtight compartment If mounting the SPS on a vertical surface it is recommended that the front panel be pointing down whenever possible Locate the mounting holes on the chassis flang...

Page 10: ...inches Heatsinks are available with the U option only or any 3600 watt inverter Front of the unit is to the right Heatsinks Figure 4 LCD Control panel footprint Assemblies 141255 2 or 141315 1 5 25 3...

Page 11: ...model on table I cross reference the wire gauge and fuse size Table I Wire and Fusing Guide for 12VDC systems at 5 Voltage Drop at Full Output Figure 5 Inverter cable assembly 6 1 2 Charge Cable This...

Page 12: ...f the battery bank a one time spark will occur when this final DC connection is made To determine the fuse size refer to section 6 1 1 6 1 3 Deep Cycle Batteries Do not use vehicle starting batteries...

Page 13: ...recommended is Hubbell GFR 5352XX 20A or GFR 5252XX 15A Do not connect another source of AC power directly to the output of the SPS This will result in damage to the SPS that is not covered under warr...

Page 14: ...put Under the hood Remote Temp Sense Red Black Charge Cable Red Connect the charging cables directly to the vehicle alternator whenever possible or to the OEM starting engine battery 2 pin Connector R...

Page 15: ...tput Breaker AC Output AC Input 30A 20A Black wire Hot White wire Neutral Green wire Ground Black White Green Wire Wire Wire Hot Neutral Ground Install GFCI outlets Hubbell GFR 5352XX 20A or Hubbell G...

Page 16: ...NDITIONING max BULK max ACCEPT max CONDITIONING max Less than 400 6 hrs 2 hrs 3 hrs 6 hrs 2 hrs 3 hrs Greater than 400 8 hrs 3 hrs 6 hrs 8 hrs 3 hrs 4 hrs If the bulk mode times out the charging proce...

Page 17: ...the SPS The inverter is also turned OFF c When external AC power is connected to the SPS the three stage battery charger may be activated This indicates that the charge current limit has been set to 0...

Page 18: ...n while the inverter is OFF and there is no external power connected to the SPS Pressing this button again will turn the inverter ON and message a will appear j This message is displayed when you pres...

Page 19: ...troubleshooting table 7 2 1 Troubleshooting Chart MESSAGE PROBLEM POSSIBLE CAUSE 1 The SPS is not connected to the batteries or the battery voltage is below 9 volts DC Check the in line fuses for con...

Page 20: ...battery Make sure that the DC cable connections are tight and clean and not shorted and that the proper wire gauge is used 9 Indicates that the charger has shut off due to high battery temperature 47...

Page 21: ...verter On INVERTER xx xx WATT BATT xx x VOLTs CHGR OFF NO INPT INVERTER OFF Start battery charger Pass AC to loads No Yes No Yes No Yes Is current limit set at 0 amp CHGR OFF 0 AMP LIMIT SET Start bul...

Page 22: ...D MODE xx x VOLT xxx AMP Has condition timer finished Stay in voltage conditioning Yes No Yes No Stay in acceptance mode CHGR ACCEPT MODE xx x VOLT xxx AMP No Yes Continued from previous page Has acce...

Page 23: ...se that the goods or any component thereof manufactured by Dimensions Unlimited will be free from defects in workmanship from the date of purchase for the period listed on the product label provided s...

Page 24: ...appliances and components found on RVs was something that I always had a desire to create I hope this resource makes your RV repairs easier as it has mine but please be careful and follow proper safe...

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