Programming troubleshooting, Factory reset, Lock out function – Flowline LC52 DataPoint User Manual

Page 6: Re-span the lc52, Offset, Span, Rly1, rly2a, rly2b, Setting values, Easycal calibration, Step eight step nine

Step Eight

Step Nine

PROGRAMMING

TROUBLESHOOTING

Factory Reset:

Returns the LC52 to its original factory set points,

including setting the OFFSET to 4 mA and the SPAN

to 20 mA. Hold both the 4/UP and 20/DWN buttons

when adding power to the LC52.

Factory Settings for the LC52 Controller

Lock Out Function:

Press both delay buttons and the DWN button to lock out all push

button functions on the LC52. Press both delay buttons and the UP

button to unlock all push button functions on the LC52.

Lock Out ON

Lock Out OFF

Re-Span the LC52:

Do a factory reset of the LC52 (holding the [4] and [20] buttons while

adding power to the unit). Next set the level transmitter to send a 20

mA current. On the LU30-5003, set the EC20 to the level the LU30 is

currently reading. While a 20 mA current is being sent to the LC52,

adjust the R23 potentiometer until the display reads 20.0. Once com-

pleted, repackage and program the LC52 and return the EC20 value

on the LU30 back to its correct setting. Note: the R23 Potentiometer

can be reached by removing the front label of the LC52 and using a

long jewelers screwdriver to reach it. R23 is located underneath the

red LED on the LED bar graph approximately halfway down the

PCB. Use extreme caution when adjusting R23.

OFFSET:

Equivalent to the 4 mA set point on the transmitter. Enter the value

you would like to see when the LC52 receives 4 mA.

SPAN:

Equivalent to the 20 mA set point on the transmitter. Enter the value

you would like to see when the LC52 receives 20 mA.

RLY1, RLY2A, RLY2B:

Set points for Relays. Values must be between OFFSET and SPAN.

Setting values:

With the Latch Off, ignore steps 9 and 10. RLY2B will not show dur-

ing the programming section with Latch Off.
1. Press the SET button once. Immediately, the LED bar

graph will begin to flash one Green bar next to

OFFSET.

2. Use UP / DWN buttons to change display to the desired

OFFSET value.

3. Press the SET button again. Immediately, the LED bar

graph will jump one Green bar to the right next to

SPAN.

4. Use UP / DWN buttons to change display to the desired

SPAN value.

5. Press the SET button again. Immediately, the LED bar

graph will jump one Green bar to the right next to

RLY1.

6. Use UP / DWN buttons to change display to the desired

RLY1 value.

7. Press the SET button again. Immediately, the LED bar

graph will jump one Green bar to the right next to

RLY2A.

8. Use UP / DWN buttons to change display to the desired

RLY2A value.

9. Press the SET button again. Immediately, the LED bar

graph will jump one Green bar to the right next to

RLY2B.

10. Use UP / DWN buttons to change display to the desired

RLY2B value.

11. Press the SET button again. Immediately, the LED bar

graph will return back to it normal operation of solid

bars.

EasyCal Calibration:

The Offset and Span points may be programmed directly to a specific

level in the tank. These are the EasyCal 4 (EC4) and EasyCal 20

(EC20) values. Note: the level of

the tank must physically be at its

desired level when using EasyCal.

If not, the EasyCal will accept the

level and the values on the display

will be incorrect. Use the factory

reset to start over if this occurs.
To calibrate EC4, set the tank to the

new Offset level. Press [4] button

once and [E] will appear in the

display. Press [4] button again and

[C] will appear in the display and

EC4 is set.
To calibrate EC20, set the tank to the new Span level. Press [20] but-

ton once and [E] will appear in the display. Press [20] button again

and [C] will appear in the display and EC20 is set.

EASY CAL

DOWN

SET

EC4 Level

EC20 Level

EASY CAL

DOWN

SET

EASY CAL

DOWN

SET

EC4 Level

EC20 Level

EASY CAL

DOWN

SET

EASY CAL

DOWN

SET

OFFSET

4.0

SPAN

20.0

RLY 1

6.0

RLY 2A

18.0

RLY 2B

8.0

RELAY 1

RELAY 2

EASY CAL

INVERT

DELAY

INVERT

DELAY

DOWN

SET

INPUT

100%

RELAY 1

RELAY 2

EASY CAL

INVERT

DELAY

INVERT

DELAY

DOWN

SET

INPUT

100%