Super User 505-BC04 Analogue Input Batch Controller for Mass Flow Meters by Contrec The Contrec 505 BC04 application is a dual stage batch controller for Mass Analogue Flow Meters that offers reliable measurement of preset quantities using a mass analog input. It can be used as a single or dual stage contoller it is suitable for fast batch applications providing the operator with a clear local readout and can be controlled via communications in more automated systems. When authorised there is quick access to commonly used preset values directly from the front panel. Automatic overrun compensation caters for system delays such as valve closure for precise volumes. The analog input can be scaled as well as having filtering, square law or non-linear correction and cutoff points applied to the signal. 505 BC04 Analogue Input Batch Controller for Mass Flow Meters features Tailored for mass analog flow input Single or Dual stage control Quick access to common batch quantities No-flow, leakage and overflow error detection Remote RUN/STOP/RESET Allows for square law and non- linear correction Storage of 100 transactions with time and date stamp Selection of second language and user tags Selectable protocols on serial ports including Modbus RTU and Printer output Backlit display with LCD backup Displayed Information The front panel display shows the current values of the input variables and the results of the calculations. A list of the variables for this application and their type (total or rate) is shown at the end of this document. The instrument can be supplied with a real-time clock for storage of up to 100 transactions with time and date stamps. Communications There are two communication ports available as follows: RS-232 port RS-485 port The ports are available for remote data reading, printouts and for initial application loading of the instrument. Retransmission & Control Outputs The instrument can retransmit any main menu variable. The digital outputs can retransmit totals as pulses or operate as logic levels for control or error outputs. If the instrument has the advanced option, it outputs rates as a 4-20 mA signal. Relay Outputs The relay outputs 1 and 2 are used to control the flow of product for each delivery. These contacts are normally open and can be used to drive external relays, valves, pump circuits etc. Software Configuration The instrument can be further tailored to suit specific application needs including units of measurement, custom tags, second language or access levels. A distributor can configure these requirements before delivery. Instrument parameters including units of measurement can be programmed in the field, according to the user access levels assigned to parameters by the distributor. All set-up parameters, totals and logged data are stored in non-volatile memorty with at least 30 years retention. Calculations for the 505 BC04 Batch Controller To derive the flow rate, the analog input is normalised to a value (A) between 0 and 1. volumeflow = (Vf max – Vf min)A + Vf min volume = ∫( volumeflow × Dt) Automatic overrun compensation calculates the new valve closure point to ensure correct delivery by averaging the overrun amount from the last three complete batches. The overrun compensation value is valid for a new preset value provided the stored overrun is less than 20% of the new preset. 505 BC04 Specifications Operating Environment Temperature 0°c to +60°c (conforma coating) +5°c to +40°c (no coating) Humidity 0 to 95% non condensing (conformal coating) 5% to 85% non condensing (no coating) Power Supply 95 - 135V AC or 190 - 260V AC or 12 - 28V DC Consumption 6W (typical) Protection Sealed to IP65 (Nema 4X) when panel mounted Dimensions 147mm (w) X 74mm (h) X 167mm (d) Display Type Backlit LCD with 7 digit numeric display and 11 character alphanumeric display Digits 15.5mm high Characters 6mm high LDC Backup Last data visible for 15 minutes after power down Update Rate 0.3 second Non-volatile Memory Rentention > 30 years Data Stored Setup, Totals and Logs Approvals Interface CE compliance Data Stored IECEx, ATEX and CSA approved enclosures available for hazardous area Real Time Clock (optional) Battery Type 3 volts lithium button cell (CR2032) Battery Life 5 years (typical) 4-20mA Input Overcurrent 100mA absolute maximum rating Impedence 250 Ohms (to common signal ground) Accuracy 0.1% typical full scale (20°c) 0.2% (full temperature range) Non-linearity Up to 20 correction points (flow inputs) Remote Logic Inputs Signal Type Voltage free contact, open collector Relay Output No. of Outputs 2 relays Voltage 250 volts, AC, 30 volts DC maximum Current 3A maximum Communication Ports Ports RS-232 port RS-485 port Baud Rate 2400 to 19200 baud Parity Odd, even or none Stop Bits 1 or 2 Data Bits 8 Protocols Modbus, RTU, Printer* Transducer Supply Voltage 8 to 24 volts DC, programmable Current 70mA @ 24V, 120mA @ 12V maximum Protection Power limited output Pulse/Digital Output Signal Type Open collector, non-isolated Switching 200mA, 30 volts DC maximum Saturation 0.8 volts maximum Pulse Width Programmable: 10, 20, 50, 100, 200 or 500ms 4-20mA Output (optional) Supply 24 volts DC internal, non-isolated Resolution 0.05% full scale Accuracy 0.1% (full temperature range, typical) Important: Specifications are subject to change without notice *Printer protocoal is available only if RTC option is installed. 505 BC04 Drawings for product dimensions
