Laurel Pulse Input or Analog Input Batch Controller

The Laurel batch controller is a low cost, powerful and highly accurate batching controller for repetitive fill operations. It can use the Laureate FR dual channel pulse input signal conditioner for use with turbine flow meters, or the Laureate V-to-F analog signal conditioner for use with 4-20 mA, 0-1 mA or 0-10V conditioned flow meter signals. Relay control can be provided by two or four 8A contact relays, or by two or four 130 mA AC/DC solid state relays. Fill operations are repeated continually with a programmable delay from 10 ms to 199.99 sec, or based on an external control input.

Three items are tracked by the batch control software. These can each be scaled to engineering units of total or flow rate and displayed by the controller's six-digit LED display:

• Item #1 is the current batch total, which can be set up to count up from zero to a preset limit, or down from a preset limit to zero.
• Item #2 can be assigned to grand total or number of batches.
• Item #3 is the flow rate.

Two or four relays can be used. Relay #1 is assigned to batch total to control the filling operation. Relays #2, #3 and #4 can each be assigned by the user to Items #1, #2 or #3. For example, Relay #2 can be assigned to Item #1 (batch total) with a lower setpoint to serve as a pre-warn and slow down the fill rate near the batch setpoint, and Relay #3 can be assigned to the total number of batches to terminate the batching when a present number of bottles have been filled.

An optional serial communications board allows the batch controller to transmit Items #1, #2 and #3, as well as peak for item #3 (rate). If required, all four items can be displayed simultaneously by augmenting the batch controller with up to three Laureate remote displays. Each of these can have its own analog output and relays for alarm or control.

• Provides automatic control for repetitive liquid fill operations
• Accepts turbine flow meter pulse signals from 0 Hz to 1 MHz
• Accepts 4-20 mA, 0-1 mA or 0-10V analog flow meter signals
• 6-digit display scalable to ±999,999
• Counts up from 0 to preset or down from preset to 0
• Dual 8A relays for control with settable delay between cycles
• Selectable display of batch total, grand total, number of batches, or flow rate
• Isolated 5, 10 or 24 Vdc excitation supply
• Universal AC power, 85-264 Vac
• External controls for reset, meter hold and decimal points

• Serial communications: Ethernet Interface, Ethernet-to-RS485 server, USB Interface, USB-to-RS485 server, RS485 interface (dual RF11), RS485 Modbus interface (dual RJ45), RS232 interface.
• Low voltage power: 10-48 Vdc or 12-32 Vac
• Relay outputs: 2 or 4 relays, contact or solid state
• Analog output: isolated 4-20 mA, 0-20 mA, 0-10V, -10 to +10V