The GM9907-L5 is a bulk scale controller designed for discontinuous automatic accumulation scales. It features a full English touchscreen display for intuitive and simple operation, making it suitable for use in chemical, grain, port, and other industries requiring bulk metering equipment.
Function Description:
The controller offers comprehensive control over the weighing process, including coarse and fine material feeding, and discharge. It supports two working modes: Receipt mode and Delivery mode. In Receipt mode, the controller continuously receives material until an external "E-stop" or "STOP" signal is received. In Delivery mode, a target ACUM quantity is set, and the controller stops after delivering the specified amount. The controller also includes a "Fill control function" for connecting with front filling devices.
Important Technical Specifications:
- I/O Function: 28 I/O control points (12 inputs / 16 outputs), with customizable input and output port locations.
- Recipes: Stores up to 20 recipes for different weighing capacities and material packaging ranges.
- Data Management: Convenient USB port for input and output of historical data.
- Filtering: Multiple digital filtering functions for improved accuracy.
- Zeroing: Automatic zero tracking function.
- Time/Date: Built-in time and date function.
- User Permissions: 3-level user permission setting (operators, administrators, and system administrators) to prevent incorrect operations.
- Serial Ports: Dual serial ports for connecting with printers, computers, and secondary displays, supporting MODBUS, Continuous Send, and Command modes.
- Ethernet Communication: Single Ethernet communication function for easy connection with a host computer.
- Load Cell Interface:
- Input impedance: 10MΩ
- Zero adjustment range: 0.002 ~ 15.625mV (when load cell is 3mV/V)
- Input sensitivity: 0.02uV/d
- Input range: 0.002 ~ 15.625mV
- Conversion: Sigma-Delta
- A/D Conversion rate: 120, 240, 480, 960 Times/second
- Non-linear: 0.01% F.S
- Gain drift: 10PPM/°C
- Maximum display accuracy: 1/100000
- Load cell power supply: DC5V 125mA (MAX)
- Digital Part:
- Display: 7-inch resistance touch screen
- Negative display: "-"
- Overload Indication: "Over Capacity / Loadcell Input Under"
- Decimal point position: 5 options
- General Specifications:
- Power supply: DC24V
- Power filter: Included
- Operating temperature: -10 ~ 40°C
- Maximum humidity: 90% RH without dew
- Power consumption: about 15W
- Dimensions: 190mm ×124mm ×48mm
Usage Features:
- User Interface: The touchscreen interface provides user information (ID, system time, recipe ID, target value, total ACUM, batch), weight status (value, unit, status, shortcut I/O function), packaging information (target flowrate, total stock in/out, ACUM data), and function parameters.
- Recipe Management: Users can switch recipe IDs, set parameters like target value, coarse fill remain, and free fall. Time-related delay timers (Filling PreDelay Timer, Result Waiting Timer, DISC Delay Timer, COMP. Inhibit Timer) can be configured for precise control during feeding and discharge.
- Over/Under Control: Parameters for over/under alarms can be set, including check activation, pause on alarm, and alarm timers.
- Flowrate Function: The controller can enable/disable target flowrate adjustment, set a target flowrate value, and configure low flowrate alarms with trigger counts and auto-adjustment.
- Weight Parameters: Settings for flowrate calculation window, feeding mode (COMB/SOLO), power-up zero, manual DISC add to ACUM, and result holding. Digital filters (AD Digital filter, Feeding Filter, DISC Filter, Result Waiting Filter) can be adjusted for different stages of operation. Stable Judge Timer and Range, Zero Trace Timer and Range, and Zero Range are also configurable.
- Calibration: The device supports both zero calibration (automatic acquisition or manual input) and weight calibration. Calibration requires administrator login and password (default: 0000) to prevent misoperation.
- Serial Port Communication: Configurable COM ID, Protocol (MODBUS-RTU, Print, Continuous Send, Response Modes), Baudrate, and Data format.
- Ethernet Communication: Configurable Port No., IP address, and MAC address.
- Printing: Auto print function for packaging details, ACUM reports, and user ACUM reports, with options for 24 or 32 columns and English/Chinese language.
- I/O Function Test: Allows users to test input and output interfaces to verify proper connection to external devices.
- Motor Control: Parameters for feed gate drive mode (air drive, motor drive single limit), motor group ID, feed gate open timers (coarse and fine), feed gate close overtime, and DISC gate control.
- Supplement Control: Supports triple, double, and single supplement control logic based on material level signals (Full, OK, Empty) to optimize feeding and prevent interruptions.
Maintenance Features:
- User Permissions: System administrators have full control, while operators and administrators have restricted access to prevent unintended changes. Permission exit time and multi-user login can be configured.
- Parameter Backup/Recovery: Allows for parameter backup and recovery, including all parameters, recipe parameters, weight parameters, motor parameters, calibration parameters, I/O function parameters, and COM parameters.
- Factory Reset: Option to reset all parameters back to factory defaults.
- Software Update: Supports U disk update for software, including background upgrades and boot interface updates.
- History Record: View time, target, and actual weight of each scale in history, with export to U disk.
- ACUM Management: Clear ACUM data (total, current recipe, all recipe, current user, all user) and in&out ACUM data.
- System Information: Check controller software version and scan QR code for user manual download.
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