Laurel

Laureate™ Pulse Input Batch Controller

(With three relay outputs for automated batch control)
Features
Standard Counter
  • 6-digit display scalable to ±999,999
  • Single 10 A relay for batch total, with settable delay between cycles.
  • Count up from 0 to preset or down from preset to 0.
  • Signals from turbine flowmeters, magnetic pickups, NPN or PNP transistors, digital logic, or AC from 12 mV to 250 Vac.
  • Isolated 5, 10 or 24 Vdc excitation supply to power sensors.
  • Optional RS-232/485 I/O
  • Selectable display of batch total, grand total or number of batches, and rate.
  • Two optional additional relays assignable to batch total for prewarn, grand total or number of batches, and rate.
  • Frequency input from 0 Hz to 1 MHz.
  • Selectable "count by" of 10 or 100 with rounding.
  • NEMA-4X (IP-65) front panel, 1/8 DIN case.
  • Certified to UL 3101-1, CAN/CSA-C22.2, EN 61010-1 (CE Mark)
Description
The Laureate batch controller is a powerful and highly accurate production workhorse in the form of a compact 1/8 DIN panel meter. It can display the current batch total (Item #1), grand total or number of batches (Item #2), and flow rate (Item #3). All displayed values are scaled to engineering units of volume or flow.

The batch controller utilizes the Extended counter main board and FR dual channel signal conditioner board to accept a wide range of pulse signals, in particular those from turbine flowmeters. The same signal is applied in parallel to the A and B channels

A 10 A contact relay serves as the batch relay to control repetitive fill operations. It repeats the batch cycles continually with a programmable delay from 10 ms to 199.99 sec, or based on an external control input. The batch total (Item #1) can be set up to count up from zero to a preset limit, or down from a preset limit to zero. The single-relay board fits in the slot which would otherwise be available for the analog output board.

An optional dual relay board (10 A contact or 0.12 A AC/DC solid state relays) is normally used. Either relay can be assigned to the batch total (Item #1) to serve as a pre-warn to slow down filling near the setpoint, to the grand total or number of batches (Item #2), or to flow rate (Item #3).

An optional RS-232 or RS-485 board allows the batch controller to transmit Items #1, #2 and #3, as well as peak for #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 dual relays for alarm or control.
Fast, High Accuracy Measurement
The A and B channels of the FR dual-channel signal conditioner are used independently. Either channel can accept pulse rates from 0.005 Hz to 250 kHz, which exceeds the working range of turbine flowmeters.

Channel A is used for totalizing. The measured total is scaled mathematically for control and display in engineering units, such as liters

Channel B is used for rate. The pulse frequency is determined by timing an integral number of periods over a specified gate time (plus 30 ms and 0-2 periods), and then taking the inverse of period. The inverse period approach allows much greater accuracy and faster update times than conventional rate meters which count signal pulses over a specified time interval. Update times can be as high as 25/sec. Rate in engineering units, such as liters per second, is obtained by multiplying the input by a scale factor.

For either total or rate, displayed values can be up to six digits (999,999) with a selectable decimal point.

Flowmeter Signal Conditioner
The FR dual-channel signal conditioner accepts pulses from all types of turbine flowmeters and most industrial transducers with a pulse output such as proximity switches with PNP or NPN output, TTL or CMOS logic, magnetic pickup pulses down to 12 mV, as well as AC inputs up to 250 Vac.

Nine hysteresis and input levels are jumper selectable for reliable measurements at different signal levels. A 1600 Hz low-pass rolloff filter for noise reduction is selectable

A built-in isolated 5, 10, or 24 Vdc excitation supply can power proximity switches and other sensors, and eliminate the need for an external power supply.
Other Features
Laureate meters and counters meet NEMA 4X (IP-65) standards from the front for high pressure washdown when panel mounted. All power and signal connections are via UL / VDE / CSA rated screw clamp plugs, which are standard

Specifications

Display Excitation Output
Readout 6 digits, 7-segment, 14.2 mm (.56") 5 Vdc 5 Vdc ±5%, 100 mA max
Color Red or green LED 10 Vdc 10 Vdc ±5%, 120 mA max
Range -99999 to +99999 XXXXEX scientific notation beyond 999999 24 Vdc 24 Vdc ±5%, 50 mA max
Indicators  4 red LED lamps Output isolation 50 Vdc to meter ground
Accuracy Electrical Connections
Time Base Crystal calibrated to ±2 ppm
Span Tempco ±1 ppm/°C (typ)
Long-term Drift ±5 ppm/year
Conversion Power
Frequency Technique Inverse period Voltage, std.
85-264 Vac and 90-370 Vdc
Conversion Time Gate time + 30 ms+ 0-2 signal periods Frequency
DC or 49-440 Hz
Gate Time Selectable 10 ms to 199.99 s Voltage, opt. 8-28 Vac and 9-37 Vdc
Timeout
Selectable 10 ms to 199.99 s
Power isolation Safety-rated to 250 Vac, meter ground to earth ground,
DC to 60 Hz, 4.2 kVp per High Voltage Test
Output & Display Updates Same as conversion time
Inputs
Types
Pulses from NPN, PNP transistors, contact closures, magnetic pickups, AC Selectable Hysteresis (-12 mV to +12 mV), (+30 mV to +60 mV),
(-30 mV to -20 mV), (-150 mV to +150 mV),
(+350 mV to +600 mV), (-600 mV to -350 mV),
(-1.15 V to +1.15 V), (+1.25 V to +2.1 V),
Signal ground Common ground for channels A & B
Channel A Frequency 0 Hz to 1 MHz (totalizing), 0.005 Hz to 1 MHz (rate) Rolloff Filter (-2.1 V to -1.25 V)
Channel B Frequency 0 Hz to 250 kHz (totalizing), 0.005 Hz to 250 kHz (rate Debounce Time Selectable, none or 1600 Hz
Selectable 0, 3, 50 ms
Environmental Rate Conversion
Operating Temperature 0°C to 55°C Frequency Technique Inverse period
Storage Temperature -40°C to 85°C Delay between batch cycles Selectable 10 ms to 199.99 s
Relative Humidity  95% at 40°C, non-condensing Display Update Time Same as conversion time
Protection NEMA-4X (IP-65) when panel mounted Output Update Time Same as conversion time

Typical Applications

Counters
Drum Filling Application Utilizing Three Relay Outputs
In this drum filling application, the Laureate utilizes its maximum of three relays to control the pump.

The Prewarn relay slows down the pump near the preset to avoid overshoot. The Batch relay stops the pump at the preset. The Grand Total relay stops the filling operation once a predetermined number of drums have been filled.

Counters
Multiple Laureate batch controllers can be used in combination to control the mixing of materials in the proper ratio. Each feed line is equipped with its own pump, flowmeter, and Laureate.

Controller setup and monitoring of the mixing operation are facilitated by optional serial communications. RS-485 allows a single data line to handle multiple controllers.

Counters
Up-Counting Batch Control
In up-counting batch control, the Laureate counts up from zero to a preset maximum. A prewarn level is available to slow down filling near the preset to avoid overshoot. A time delay can be programmed from the end of each batch to the start of the next batch.
Counters
Down-Counting Batch Control
In down-counting batch control, the Laureate counts down from the preset maximum to zero. A prewarn level is available to slow down filling or emptying near zero. Again, a time delay can be programmed from the end of each batch to the start of the next batch.
Counters
Discrete Filling and Batch Counting
The Laureate batch controller is ideal for discrete manufacturing as well as repetitive fill operations. In this example, the Laureate counts bottles which it then groups into sixpacks. Its Grand Total capability can be used to track bottles or sixpacks.
Purchase
5672 Bolsa Avenue Huntington Beach, CA 92649 - USA - Ph (714) 622-2000 - Fax (714) 622-2001