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FEBC Operation 

Page 5 

 

Relay Output Bypass  

 
When switch #8 is selected at power-up, the air-gap relay drivers will be disabled. Analog outputs will continue to 
operate. 
 

3.4 Input Line Voltage 

 
The FEBC is strappable for 115V and 230V 50/60Hz operation. A 1 Amp Slo-blo line fuse is attached to the PCB. 
 
The PCB is fabricated with the 115V operation enabled. To convert to 230V operation, cut both traces at E1 and E2, 
then solder a wire jumper at E3. Use a wire gage of #24 or larger for this jumper. 
 
 

4.0 DEVICES SUPPORTED 

 
The FEBC will support any analog control device which will accept a 0V to 12 Vdc (adjustable maximum) input 
source. The maximum amount of current supplied will not exceed 20mA and therefore the number of analog loads 
must take into account line impedance and output loading. 
 
The FEBC has been tested for use with the following electronic ballasts: 
 

ADVANCE MARK VII - Cat. No. RDC-140-TP (single)  
ADVANCE MARK VII - Cat. No. RDC-240-TP (dual) 

 
The FEBC is also capable of driving other analog loads. However, the, product is not tested with anything other than 
the above ballasts. 
 
 

5.0 CALIBRATION 
 

The FEBC may be adjusted to meet voltage requirements for up to 12Vdc full scale. 
 

5.1 Calibration Procedure 

 
A.  Insure that there is nothing connected to the analog Outputs of the FEBC which may be damaged by voltages 

up to 15Vdc. 

 
B.  Set the option dipswitch to CALIBRATE function. This is switch position #7 On S4. 
 
C.  Supply power to the FEBC. If power was already on when the dipswitch was changed, cycle power off and on 

again to put FEBC into calibrate mode.. All analog outputs go to full levels and the relays Wilt turn on in this 
mode. 

 
D.  Connect a voltmeter between the AN1 terminal and any RET terminal on connector P4. Adjust Potentiometer 

R19 for the desired full-scalce output voltage. 

 
For MARK VII ballasts the Output setting should be approximately 9.0 Vdc. 
 

Summary of Contents for FEBC

Page 1: ...TECHNICAL MEMO Operation Fluorescent Electronic Ballast Controller FEBC Copyright Arpil 2005 Leviton Manufacturing Co Inc Original Document January 1993...

Page 2: ...witche s located at the edge of the card 4 consecutive dimmer values are sampled from the optoisolated DMX512 or CMX serial signal and processed by the FEBC s microcontroller Analog outputs represent...

Page 3: ...Therefor the receiver and transmitter shield wires are not connected togethler transmitter shield wire is connected to the digital ground in the FEBC If it is desired to connect the input shield to t...

Page 4: ...are law output drives the analog voltage output differently than lineair output When data is received by the FEBC it is converted into the Square law output It is theorized that square law compensatio...

Page 5: ...he following electronic ballasts ADVANCE MARK VII Cat No RDC 140 TP single ADVANCE MARK VII Cat No RDC 240 TP dual The FEBC is also capable of driving other analog loads However the product is not tes...

Page 6: ...4 Adjust Potentiometer R21 for the desired full scale output voltage G Connect a voltmeter between the AN4 terminal and any RET terminal on connector P4 Adjust Potentiometer R22 for the desired full s...

Page 7: ...Input DMX512 CMX Serial Data RS485 compatible Analog Signal Output Source Current 20 mA 12 Vdc short circuit protected Sink Current Advance ballasts use this parameter 20 mA 2 Vdc Contactor Drivers O...

Page 8: ...FEBC Operation Page 8...

Page 9: ...Percent Light Level Percent Light Output Percent Light Output 0 0 0 10 10 1 20 20 4 30 30 9 40 40 16 50 50 25 60 60 36 70 70 49 80 80 64 90 90 81 100 100 100 Linear Scale Square Law Scale Figure 2 Co...

Page 10: ......

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