The load limiter LC 330 is an electronic instrument compact and reliable, compliant to the safety regulations EN 13849-1 PL d / EN 62061 SIL 2, designed for to prevent overloads and to ensure the safety of the operators. It is equipped with: 2 inputs independent for load cells (single or dual bridge). Display LCD backlit to 2 lines x 16 characters. Keypad to 4 mechanical keys for calibration and configuration quick. Terminal blocks extractable for to simplify wiring and maintenance. Function adder up to 4 units connected (via RS485 or RF optional). Relay of safety to contacts guided for blocking and alarms. PWS: 08/2025
Technical Specifications in PDF
| Measuring range: -3,9 ÷ +3,9 mV/V |
| Internal Resolution: 24 bit |
| Linearity: <0,01% full Scale |
| Gain drift: <0,002% FS / °C |
| Filter: 0,25 ÷ 3 Hz selezionabile |
| Display: LCD display with backlight 2 x 16 character |
| Keyboard: 4 mechanical keys |
| Number of connectable load cells: Max 8 cells from 350 Ohm (single/dual bridge) |
| Voltage power cell: 4 Vdc short-circuit protected |
| Logic inputs: 2 optoisolated inputs |
| Logic output: 1 safety interlock relay, 2 limit relays, 1 alarm relay |
| Rated load RL: 2A – 30Vdc/250Vac |
| Analog optional output: 0–10 V / 0–5 V o 0–20 mA / 4–20 mA, 16 bit |
| Output linearity: 0,03 % full scale |
| Temperature drift analog output: <0,002 % full scale/°C |
| Communication interfaces: RS232, RS485, Optional RF (868 MHz) |
| Flash memory: 128 KB Flash + 32 KB EEPROM (expandable to 256 KB) |
| Microcontroller: ARM Cortex M0+ 32 bit |
| Power supply: 20 ÷ 50 Vac/Vdc, 6 VA |
| Isolation: Class III |
| Power consumption: 6 VA |
| Temperature range: -10 ÷ +50°C (max 85% humidity without condensation) |
| Storage temperature: -20 ÷ +60°C |
| Material: Polyamide 6.6 UL 94V-0 flame retardant |
| Electrical connection: Removable screw terminals with 5.08mm pitch and RJ45, USB A and B communication ports |
| Dimensions: 140 × 93 × 65 mm (Enclosure) / 90 × 72 mm (Circuit board) |
| Mounting type: Fixing with 4 screws or on support for DIN bar or OMEGA bar 35 mm |
| Regulatory compliance: EN61010-1, EN61000-6-2, EN61000-6-3, EN13849-1, EN62061 SIL |
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