The LLC-BA Batch Unit provides accurate and repeatable batch control, stores up to nine
different programmable batch quantities, and is a rate, total or batch indicator. The LLC-BA
provides relay outputs to initiate and stop the flow. The relay outputs can be used to control two
solenoids with different flow rates to allow for a slow stop/start of the flow.
In batching operations, the LLC-BA activates the low flow solenoid on the START input and
after a programmed variable DELAY, the high flow solenoid is activated producing a
combined high flow rate. The high flow solenoid is deactivated before the batch amount has
been reached by means of the PRECUT variable reducing the flow for a slow stop. The low
flow solenoid is de-activated when the programmed batch amount is reached.
The LLC-BA compensates for a valve or fluid delay in the batch system with the Automatic Over-run Compensation feature. Any over-run is detected by the A.O.C. feature and the LLCBA anticipates and corrects for the delay on the next batch. This feature is always active and
adapting continuously to correct for long term changes in valves and fluid characteristics.
Features
* 87C51FB Microprocessor based design
* Dust-proof LEXAN front panel, resistant to chemicals compatible with LEXAN.
* 16 character alpha numeric LCD display, .35 inch character height
* All wiring via two rear mounted removable 10 pin screw terminals
* EEPROM variable storage with 5 year minimum life
All customer connections are made in the back of the unit. Power is delivered to the LLC-BA
unit through a plug-in connector from the wall plug type power supply normally supplied with
the unit. If necessary, any standard AC wall plug unit providing 12-16VAC/300 mA. or 1722VDC/300mA. to a standard female plug (2.1mm I.D. x 5.5mm O.D.) may be used.
All other connections are accomplished through the two 10 pin screw terminals that are
removable for ease of wiring. These are referred to as the upper and lower connectors.
Connection information is labeled on the connectors. See the LLC-BA Connection Diagram on
page 7 for connector detail and typical batch application connections.
The connections on the upper connector are as follows:
TERM 1 +15VDC Power supply for the transmitter. Approx. 15VDC (power supply
dependant), approx. 20mA.. max. Source for pull-up resistor if required.
TERM 2 GROUND (floating), power supply negative for the transmitter.
TERM 3 SIGNAL frequency input from the transmitter. 0-4KHz , 2 volts minimum,
10KOhm input impedance. A pull-up resistor is required for pickups with a
sinking output. Size resistor not to exceed rated output current of pickup.
Typical pull-up values range from 2.2Kohm to 5.1Kohm
TERM 4 RUN/PROG Input. Enables RUN-Mode and EXTERNAL functions when
connected to GROUND (TERM 2). When open, LLC-BA is in the
PROGRAM Mode. This input must be activated with a dry contact!
TERM 5 REL2COM is the common contact of Relay 2 (Form C). Relay 2 is used in
batching applications for control of the high flow solenoid valve in a two
valve system with slow start/stop function. See Connection Diagram page 7
for solenoid connection details. See Table 1 on page 4 for relay
contact ratings.
TERM 6 REL2NC is the normally closed contact for Relay 2.
TERM 7 REL2NO is the normally open contact for Relay 2.
TERM 8 REL1COM is the common contact of Relay 1 (Form C). Relay 1 is used in
batching applications for control of the low flow solenoid valve in a two
valve system with slow start/stop function. See Connection Diagram page 7
for solenoid connection details. See Table 1
contact ratings.
TERM 9 REL1NC is the normally closed contact for Relay 1.
TERM 10 REL1NO is the normally open contact for Relay 1.
on page 4 for relay
AW-Lake Company 8809 Industrial Drive, Franksville, WI 53126 web: www.aw-lake.com
The connections on the lower connector are as follows:
TERM 11 VOLTAGE SUPPLY OUTPUT - 15 VDC, 25 mA
TERM 12 GROUND for Batch External Function Inputs (Inputs 1-4)
TERM 13 ANALOG OUTPUT SELECT – Connect to TERM 11 to change the function of
the analog output from a Batch Progress Signal to a Batch Number Signal.
(Software revision 1.18 and above only)
TERM 14 INPUT1, START/STOP Input (momentary) for batching applications.
Start/Stop is accomplished by momentarily connecting INPUT1
(TERM14) to GROUND (TERM 12). Batch start will occur on rising edge of
signal as the connection is opened. If input is closed again before the batch
total has been reached, stop will occur on falling edge of the signal as the
connection is closed. Batch function will resume on the rising edge of the next
momentary closure of the STOP/START input. START/STOP function
is active in RUN mode.
TERM 15 INPUT2, BATCH RESET Input (momentary) for batching applications. Batch
Reset is accomplished by momentarily connecting INPUT2 (TERM15)
to GROUND (TERM 12). When connected, the batch operation
will be terminated and the batch totalizing value is reset to zero on the
falling edge of the signal as the connection is closed. Reset function is active
in RUN mode.
TERM 16 INPUT3, BATCH SELECT Input (momentary) for batching applications. Used
for selection of pre-programmed batch quantities (Batch 1- 9) while in
the RUN mode. Batch number is incremented and display indicates batch
selected and programmed batch quantity while the input is closed.
TERM 17 INPUT4, MODE CHANGE Input (momentary) for batching applications. Used
to select the display mode while operating in the RUN mode. Display
mode is incremented on each closure of the input.
TERM 18 NO CONNECTION
TERM 19 mA’s (+), Positive of mA’s output – this analog output is a batch progress signal
or with software revision 1.18 or higher can alternately indicate the currently
selected batch number. A Batch Progress Signal directly corresponds with the
progress of the batch where 4mA equals zero progress and 20mA is equal to the
full batch amount. A Batch Number Signal (Software revision 1.18 and above
only) indicates the currently selected batch number in 1 mA increments with 5 –
13mA representing batch numbers 1-9. To assign the output to the Batch
Number Signal function it is necessary to wire a jumper to the back of the LLC-
BA controller between lower connector terminal 11 and terminal 13.
TERM 20 mA’s (- ), Negative of mA’s output - see mA’s (+) above...
AW-Lake Company 8809 Industrial Drive, Franksville, WI 53126 web: www.aw-lake.com