AW Gear Meters LLC-BA - Manual (Page 10)

LLC-BA Batch Unit
Operation and Programming Manual
9
Input and Output Wiring Connections
Make all connections to the LLC-BA from the back of the unit. A plug-in connector from the wall plug-
type power supply, normally supplied with the unit, delivers power. If necessary, any standard AC wall
plug unit providing 13-17VAC/250mA. or 15-24VDC/250mA. may be used. A standard female plug
(2.1mm I.D. x 5.5mm O.D.) supplies AC or DC power to the LLC-BA. The factory recommends tying one of
the DC COMMON terminals to earth ground, especially for DC operation.
Make all other connections through two terminal connectors. Called the “upper” and “lower”
connectors, they are removable and have ten connections each. A label on each connector shows
connection information. Refer to the Connection Diagram on page 12 for details and typical batch
application connections.
Upper Connector Terminal Designations
TERM 1 +15VDC Power supply for the transmitter. Approximately 15VDC (power supply
dependant), approximately 20mA maximum. 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 to control the high flow solenoid valve in a two valve system with slow
start/stop function. See Connection Diagram page 12 for solenoid connection details. See
table on page 7 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 to control the low flow solenoid valve in a two valve system with slow
start/stop function. See Connection Diagram page 12 for solenoid connection details. See
table on page 7 for relay contact ratings.
Notice