Multi counters module SLI-8 allows to counting of pulses delivered to 8 isolated binary inputs independently. All counters are 24 bit long and can be read and cleared by user at any time. Occurrence of HIGH state on particular input is signalled by green LEDs marked IN1 to IN8. Incrementation of counter occurs after falling edge on particular input (input state changes from HIGH to LOW). It is essential that pulses have fulfill some time restrictions. These restrictions depend on settings of implemented internal digital filter, which allows to eliminate signal oscillations corresponding to contacts bouncing (of mechanical sensors).
Parameters
Inputs | 8 binary; counters capacity: 4 294 967 295 (32 bits) |
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Current consumption | typ. 20 mA |
Protection class | IP 20 (housing and connection clips) |
Operating temperature | 0°C ÷ +50°C (standard), -20°C ÷ +50°C (option) |
Power supply | typ. 24V DC (16V DC ÷ 30V DC) |
Input levels | LOW state: 0V; HIGH state: 24V (min. 8V) |
Communication interface | RS-485 / Modbus RTU |
Breakdown voltage | all 8 inputs are galvanically isolated from module supply and RS-485 interface |
Storage temperature | -10°C ÷ +70°C or -20°C ÷ +70°C (with option 08) |
Humidity | max. 90%, non-condensing |
Data memory | non-volatile memory, EEPROM type |
Case dimensions | 101 x 22,5 x 80 mm |
Transmission parameters | 1200 ÷ 115200 bit/s. |
Number of modules in 1 network | max. 128 |
External fuse | T – type, max. 1 A (required) |
Mounting | on the 35 mm strip |