STI-N118
STI-N118 ratemeters in tight, wall mounted case (IP 67), are designed to control rotational speed (from 1,5 to 50000 rev/min) or its inversion (revolution period). Available parameters of divider and multiplier enable flexible scaling of measure and transformation into linear speed. On top of that, they enable operation in the frequency and period meter mode, what allows to show e.g. material linear speed, baking time, drying time, revolution period. The REL / OC control outputs can be programmed depending on the instantaneous value of rotational speed. Additionally the counter may be equipped with analogue outputs, according to the customer selection: active current output, passive isolated current output or active voltage output. The counter may be configured with no need to open the case, by using the remote controller or with free S-Config software via the RS-485 communication port.
Parameters
| Power supply | 19V ÷ 50V DC; 16V ÷ 35V AC or 85 ÷ 260V AC/DC, all separated |
|---|---|
| Measurement range | 0 ÷ 999999 + decimal point |
| Power consumption | for 85 ÷ 260V AC/DC and 16V ÷ 35V AC power supply: max. 5 VA; for 19V ÷ 50V DC power supply: max. 5 W |
| Input | pulse, fully isolated, with debouncing filter and pulse width control, max. input frequency 50.0 kHz |
| Data memory | non-volatile memory, EEPROM type |
| Communication interface | RS-485 / Modbus RTU (not galvanically isolated) |
| Analogue outputs | (available with 2 x REL or OC, see ordering): active current: operating range 0/4-20 mA (max. 0-24 mA), load resistance 700 Ω max., resolution 13 bit passive current: isolated, operating range 4-20 mA (max. 2,8-24 mA), load resistance 600 Ω@24VDC, resolution 13 bit; active voltage: operating range 0/1-5V, 0/2-10V (max. 0-11V), load resistance min. 2000 Ω, resolution 13 bit |
| Output | 0 or 2 relays 1A/250V AC (cos fi=1) or the OC 30mA/30VDC/100mW; transducer power supply output: 24V DC +5%, -10% / max. 100 mA, stabilized |
| Transmission parameters | 1200 ÷ 115200 bit/s, 8N1 and 8N2 |
| Storage temperature | -10°C ÷ +70°C or -20°C do +70°C (depending on version) |
| Operating temperature | 0°C ÷ +50°C (standard), -20°C ÷ +50°C (option) |
| Accuracy | ± 0.02% ± one digit (full temperature range) |
| Case | wall-mounted |
| Case dimensions | without glands: 110 x 80 x 67 mm; with glands: 110 x 105 x 67 mm |
| Protection class | IP 67 |
| Display | LED, red, 6 x 13 mm high, with 8-step adjustment of brightness |
| Rotational speed unit | revolutions per second (rps), per minute (rpm), per hour (rph) |
| Rotational speed accuracy | selected in the range 0 ÷ 0,00000 |
| Pulse waiting time | settable from 0,1 to 39,9 seconds |
