If there is not any keypad operation in one minute and it’s not in the processes of ‘F2 Calibration’ & ‘F6 Factory Adj.’, the controller will return to ‘Main Display Interface’ automatically.

Menu Operation
Key Name	Description
【MENU】 (【ESC】)	Enter Main Menu. Exit.
【ENT】	Enter/Save.
【▲】	Cursor shifts up or left. Display the previous interface or option.
【▼】	Cursor shifts down or right. Display the next interface or option.
【0~9】	Digit Input.
Quick Operation
【LOCK】	Key-locking. Key-unlocking.
【F1】	Return to the initial display interface.
【SET】	Flow Set Value Setting.
【ADJ-】	Control Current -1mA.
【ADJ+】	Control Current +1mA.
【AUTO】	‘Manual/Auto’ Control Mode Selection.
【EXT】	‘Internal/External’ Flow Set Mode Selection.
【ZERO】	Zero Calibration.
【CAL】	Dynamic Span Calibration.
【CLS】	Clear Screen: Clear display value of Totalized Weight.
【REC】	Query and print Weight Record.
【PRINT】	Print.

Technical Specification

Executing Standard

CMC GB/T 7724-2008PRC National Standard.

² OMIL R50:1997International Recommendation.

² Accuracy Grade: 0.5.

² Accuracy of Flow Control: 0.5%~1.0%.

Display

128×64 LCD display screen with 7 background colors for English display.
Display Refreshing Time: Setting Range 0.1~2.0s.

Kaypad

16-key English keypad.
Menu&Shortcut operation with key tone.

Loadcell Interface

Excitation Voltage/Max. Current: DC10V/250mA [8-350Ω loadcells].
Signal Input Range: 0~25mV.
∑-△ADC: 24-bit, 100,000 internal code used.
Sampling Frequency: 200Hz.
Zero Drift: ±0.1μV/℃ RTI (Relative to Input).
Gain Drift: ±5ppm/℃.
Non-linearity: 0.005%FS.

Speed Sensor Interface

Output Voltage/Max. Current: DC12V/100mA.
Speed Pulse Input Range: 0.5~3000Hz.

Switch Signal Interface

3 Normally Open Switch Inputs [DI].
4 Normally Open Relay Switch Outputs [DO]: AC250V/DC24V, 1A.
1 ‘Totalized Weight High-speed Pulse’ Output [PO]: 100mA, DC5~24V; Weight per Pulse and Pulse Width can be preset.

Analog Signal Interface

Max.3 Definable ‘Flow/Control Current /…’ Analog Signal Outputs [AO]: 4~20mA, Non-linearity: 0.05%FS; AO3 is optional.
1 Optional ‘Flow Setpoint’ Analog Signal Input [AI]: 4~20mA, Non-linearity: 0.05%FS.

Digital Communication Interface

COM1: Optional RS232/RS485/RS422/Profibus-DP/Ethernet modules.
COM2: RS232.
Connectable: IPC/PLC, LED Remote Display, Serial Printer and Wireless Module.

Report Print

Weight Records per shift/day/month of a year can be queried and printed.

Operating Specification

Operating Voltage: DC24±20%.
Max. Power Consumption: 10W.
Outline Size: 288×95×189mm [W×H×D].
Panel Cut-out Size: 281×88mm [W×H].
Operating Temperature: -25℃ to +45℃.
Storage Temperature: -30℃ to +60℃.
Relative Humidity: Max. 85%RH.
Protection Level of Front Panel: IP65.
Weight: Approx. 1.4kg.

Pictures

Operation Interface Diagram

State Indication

LED Lamp	Description
[RUN]	ON: Weighing state. OFF: Stopping state.
[AUTO]	Feeding control mode: ON: Auto [PID]. OFF: Manual.
[EXT]	Flow Set Mode: ON: External [AI: 4~20mA]. OFF: Internal.
[ALARM]	Alarm.
[LOCK]	ON: Key-locked. OFF: Key-unlocked.

Installation

Operation Procedure

Ration Flow Auto-Feeding System

Product Tags:

rs232 weighing scale

digital weighing balance specifications

weighbridge calibration

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