04 มิถุนายน 2567
ผู้ชม 203 ผู้ชม
The main operating features of indicator MC 302 are Batch-in of up to 12 ingredients or Batch-out of 1 ingredient.
The main operating features of indicator MC 302 are Batch-in of up to 12 ingredients or Batch-out of 1 ingredient. The batching sequences can be programmed by the operator. The storage of up to 50 different recipes eliminates the need to constantly change set-point values when producing multiple products. It features in-flight correction, tolerance checking and individual accumulators. Both the ingredients and the recipes can be totalised individually. The system configuration provides for the following optional installations analog output, alibi memory, BCD output through an external card, Profibus-DP output through an external module for DIN guide.
Technical specification
| Power supply | 230 Vac 50/60 Hz (115 Vac optional) |
| Power consumption | 15 VA |
| Insulation | Class II |
| Installation category | Cat. II |
| Operating temperature | -10°C - +40°C (max. humidity 85% without condensation) |
| Storage temperature | -20°C - +50°C |
| Weight display | 7 digits red LED’s, 7 segments (14 mm high) |
| Status LED’s | 7 red LED, ∅3 mm |
| Keyboard | Membrane keyboard with 14 keys and buzzer |
| Overall dimensions | 144 x 72 x120 mm (l x h x d) (DIN43700) |
| Panel cut-out | 139 x 67 mm |
| Case | Fireproof Noryl (UL 94 V1) |
| Front panel protection level | IP54 |
| Connections | Pull-out terminal blocks pitch 5.08 (power supply pitch 7.5 mm), |
| serial ports on 9 poles SUB-D connector. | |
| Load cell excitation | 5 Vdc / 120 mA (max. 8x350Ω load cells) short circuit proof |
| Input sensitivity | 0.02 µV min. |
| Linearity | < 0.01% of the full scale |
| Temperature drift | < 0.0003% of the full scale / ºC |
| A/D converter resolution | 24 bit |
| Displayed weight resolution | Up to 600,000 divisions on the total capacity (10,000 divisions in |
| case of “legal for trade”) | |
| mV/V input signal range | From -3.9 to +3.9 mV/V |
| Weight acquisition frequency | 6 Hz - 160 Hz |
| Digital filter | Programmable from 0.2 Hz to 50 Hz |
| Weight decimal digits | 0 to 4 decimal digits |
| Zero and full scale calibration | Data-sheet or Dead-load calibration |
| Logic outputs | 6 relays (NA contact) max 115 Vac/30 Vdc, 0.5 A each |
| Optional: Up to 2 external 8-relay modules. Features as above | |
| Logic inputs | 8 opto-isolated 12 Vdc / 24 Vdc PNP |
| Serial ports (2) | COM1: Rs232c half duplex |
| COM2: Rs422/Rs485 half duplex. | |
| Maximum cable length | 15m (Rs232c) and 1000m (Rs422 and Rs485) |
| Serial protocols | ASCII, Modbus RTU, EPSON or Alfapanel Printers |
| Baud rate | 1200, 2400, 4800, 9600, 19200, 38400, 115000 selectable |
| Programme code memory | 128 Kbytes FLASH resettable on board by RS232 |
| Data memory | 8 Kbytes extendable to 36 Kbytes |
| Optional alibi memory | 1 Mbyte (up to 160,000 weighing procedures recorded) |
| Clock / calendar | On mother board with buffer battery |
| Analog output | Voltage: 0 - 10 V / 0 - 5 V Current: 0 - 20 mA / 4 - 20 mA |
| Resolution | 16 bits |
| Calibration | Digital via keyboard |
| Impedance | Voltage: minimum 10KΩ Current: maximum 300Ω |
| Linearity | 0.03% of the full scale |
| Temperature drift | 0.001% of the full scale / ºC |
| Conformity to Standards | EN50081-1, EN50082-2, EN61010-1, EN45501 |
