Stahl - Catalog - STAHL - #379

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4/3 4 Automation 17.04.2008 Digital Input Module NAMUR for Installation in Zone 1 Type 9470/22 Channel 14 and 15 as frequency input or counter Max. switching frequency 20 kHz (at frequencies > 1 kHz the maximum line length decreases, e. g. at 5 kHz to approx. 75 m) Min. pulse width 25 ms Frequency input Counter input Counter control signal Start, Stop, Reset Counter range 0 ... 65535 MTBF acc. MIL 46.9 years (at 40 °C) Settings Open-circuit and short-circuit monitoring ON, OFF (for each channel) Value at fieldbus during open-circuit / short-circuit ON, OFF, hold last value (all channels) Invert input value ON, OFF (for all channels) Pulse width extension 0 s, 0.6 s, 1.2 s, 2.4 s (for channel groups) Gate time for frequency measurement range 1 Hz ... 20 kHz 50 ms, 200 ms, 1 s Active edge for counter (channels 14, 15) positive (voltage ¤) negative (voltage ¥) Diagnostics Retrievable parameters Manufacturer, type, version, serial number Characteristic values for open circuit / short circuit detection Open circuit detection < 0.05 mA Short circuit detection < 100 O Note: For wire break / short circuit detection a circuit with 1.2 kÙ in series and 15 kÙ in parallel is required for contacts. Module faults • Internal primary bus fault • Internal redundant bus fault • No response • Dissimilar module configuration • Hardware fault Power supply Max. power consumption 5 W Max. power loss 5 W Construction setup Module enclosure Polyamide 6GF Fire protection class (UL 94) HB Degree of protection (IEC 60529) Modules IP 30 Connections IP 20 Electrical connections Ex i field signals Plug-in terminals 16 pin with catch, 2.5 mm2, screw or connectors Technical Data Measurement range 1 Hz ... 1 kHz 1 Hz ... 20 kHz Resolution 0.05 Hz 1 Hz Accuracy 0.02 % 0.02 % parameterizable for each channel