PRU MSYSTEM | Alldatasheet

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MODEL: PRU PRU SPECIFICATIONS ES-1375 Rev.15 Page 1/4 http://www.m-system.co.jp/ Plug-in Signal Conditioners M-UNIT PULSE SCALER (field-configurable) Functions & Features

  • Converting pulse rate into convenient engineering unit for display on a totalizing counter or meter
  • Excitation
  • Digital scaling accuracy
  • Scaling factor adjustable of 0.9999 × 100 to 0.0001 × 10–6
  • High-density mounting Typical Applications
  • Positive displacement flowmeters and turbine flowmeters
  • Magnetic tachometers (1 .97) 127 (5) (3.15) mm (inch) MODEL: PRU–[1][2]–[3][4]

ORDERING INFORMATION

  • Code number: PRU-[1][2]-[3][4] Specify a code from below for each of [1] through [4]. (e.g. PRU-11-B/Q)
  • Input frequency range (e.g. 0 – 356.7 Hz)
  • Output frequency range (e.g. 0 – 1.00 Hz)
  • Specify the specification for option code /Q (e.g. /C01/S01) [1] INPUT 1: Dry contact (Excitation 12 V @30 mA) 2: DISCONTINUED, replaced with code 8 Voltage pulse; square wave (Exitation 12 V @30 mA) 7: Sine wave (Excitation 12 V @30 mA) 8: Voltage pulse; square wave (Excitation 12 V @30 mA) [2] OUTPUT 1: Open collector (max. frequency 20 kHz) 2: 5 V pulse (max. frequency 20 kHz) 3: Relay contact (max. frequency 2 Hz) 4: 24 V pulse (max. frequency 20 Hz) [3] POWER INPUT AC Power B: 100 V AC C: 110 V AC D: 115 V AC F: 120 V AC G: 200 V AC H: 220 V AC J: 240 V AC DC Power S: 12 V DC R: 24 V DC V: 48 V DC [4] OPTIONS blank: none /Q: With options (specify the specification) SPECIFICATIONS OF OPTION: Q (multiple selections) COATING (For the detail, refer to M-System's web site.) /C01: Silicone coating /C02: Polyurethane coating /C03: Rubber coating TERMINAL SCREW MATERIAL /S01: Stainless steel CAUTION 1) This unit's output waveform is not uniform due to its scaling method. The user must be aware that it may be inconvenient for certain types of application. 2) This unit is designed to accept at the maximum of 100 kHz, which may cause errors due to chattering in the input pulses. Use input relays which do not cause chattering (e.g. mercury relays). Other relays could be used only with a CR filter, for 10 Hz at maximum. 3) Use M-System’s Model M2PRU instead of this unit in conjunction with the pulse output from M-System’s power transducers. Relay R C PULSE SCALER C = 1 µF R = 10kΩ GENERAL SPECIFICATIONS Construction: Plug-in Connection: M3.5 screw terminals Screw terminal: Chromated steel (standard) or stainless steel

MODEL: PRU PRU SPECIFICATIONS ES-1375 Rev.15 Page 2/4 http://www.m-system.co.jp/ Housing material: Flame-resistant resin (black) Isolation: Input to output to power Input pulse sensing: Capacitor coupled; detecting pulse rise Sensitivity adjustment: For voltage pulse input, sine wave input, adjustable between 25 mVp-p – 5 Vp-p (front) Scaling factor adjustment: 0.9999 × 100 – 0.0001 × 10–6 (front 10-position rotary switch) Output pulse width adjustment: (front)

  • Open collector, 5 V pulse: 40 μsec. - 0.8 msec.
  • Relay contact, 24 V pulse: 40 msec. - 0.8 sec. INPUT SPECIFICATIONS Excitation: 12 V DC @30 mA; shortcircuit protection ■ Dry Contact: Mechanical contact or open collector Max. frequency: 100 kHz Pulse width time requirement: 5 μsec. min. (20 msec. min. for frequencies ≤ 10 Hz) Sensing: Approx. 7.5 V DC @ 1 mA ON/OFF level: ≤ 20 kΩ for ON, ≥ 100 kΩ for OFF ■ Voltage Pulse: Square or similar waveform Max. frequency: 100 kHz Pulse width time requirement: 5 μsec. min. (20 msec. min. for frequencies ≤ 10 Hz) Input amplitude: 25 mVp-p – 50 Vp-p Minimum amplitude requirement: [Pulse With (Fequency): Amplitude] ≥ 250 μsec. (0 – 2 kHz): 25 mVp-p ≥ 25 μsec. (0 – 20 kHz): 50 mVp-p ≥ 12.5 μsec. (0 – 40 kHz): 1 Vp-p ≥ 5 μsec. 0 – (100 kHz): 5 Vp-p Input impedance: ≥ 50 kΩ ■ Sine wave: Sine or similar waveform Frequency: 10 Hz - 100 kHz Pulse width time requirement: 5 μsec. min. (20 msec. min. for frequencies ≤ 10 Hz) Input amplitude: 25 mVp-p – 50 Vp-p (within 10 Hz - 100 kHz) Minimum amplitude requirement: (Frequency: Amplitude) 0 – 2 kHz: 25 mVp-p 0 – 20 kHz: 50 mVp-p 0 – 40 kHz: 1 Vp-p 0 – 100 kHz: 5 Vp-p Input impedance: ≥ 50 kΩ Waveform examples 25mV p-p – 50Vp-p
  • Square Waveform TH TL Pulse width is smaller of TH or TL. VL VH 25mV – 50V 25mV p-p – 50V p-p0V
  • Sine Waveform OUTPUT SPECIFICATIONS ■ Open Collector: 50 V DC @ 50 mA (resistive load) Frequency range: 0 – 20 kHz ON pulse width: 40 μsec. – 0.8 msec. adjustable Saturation voltage: 0.6 V DC ■ Relay Contact: 120 V AC @ 200 mA (cos ø = 1)

240 V AC @ 100 mA (cos ø = 1)

24 V DC @ 200 mA (resistive load)

Frequency range: 0 – 2 Hz ON pulse width: 40 msec. – 0.8 sec. adjustable Relay life: ≥ 5 × 107 cycles (mechanical) ≥ 105 cycles (electrical) ■ 5 V Pulse Frequency range: 0 – 20 kHz Low pulse width: 40 μsec. – 0.8 msec. adjustable Hi/Lo level: 5 V ± 10 % for Hi; ≤ 0.5 V for Lo Load resistance: 600 Ω min. ■ 24 V Pulse Frequency range: 0 – 20 Hz High pulse width: 40 msec. – 0.8 sec. adjustable Hi/Lo level: 24 V ± 10 % for Hi; ≤ 0.5 V for Lo Load current: 30 mA max. Load resistance: 800 Ω min. INSTALLATION Power input

  • AC: Operational voltage range: rating ±10 %, 50/60 ±2 Hz, approx. 2 VA
  • DC: Operational voltage range: rating ±10 %, ripple 10 %p-p max., approx. 2 W (80 mA at 24 V) Operating temperature: -5 to +60°C (23 to 140°F) Operating humidity: 30 to 90 %RH (non-condensing) Mounting: Surface or DIN rail Weight: 350 g (0.77 lb) PERFORMANCE Insulation resistance: ≥ 100 MΩ with 500 V DC Dielectric strength: 2000 V AC @1 minute (input to output to power to ground)

MODEL: PRU PRU SPECIFICATIONS ES-1375 Rev.15 Page 3/4 http://www.m-system.co.jp/ EXTERNAL VIEW Front Cover (open) Pulse Width Adj. Sensitivity Adj. – 1 – 2 – 3 – 4 – n Pulse Rate EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch) 3456 2187 80 (3.15) 80 (3.15) (.79) 40 (1.57) 50 (1.97) 7.8 (.31) CLAMP (top & bottom) DIN RAIL 35mm wide2–4.5 (.18) dia. MTG HOLE 15 (.59) deep 8–M3.5 SCREW

  • When mounting, no extra space is needed between units.

MODEL: PRU PRU SPECIFICATIONS ES-1375 Rev.15 Page 4/4 http://www.m-system.co.jp/ SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM Isolation Base Socket Pulse Volt. Amplifier Output Driver OUTPUT U(+) V(–) POWER 12V Supply INPUT SENSOR EXCITATION One-shot ■ Dry Contact Input Connection Examples – +12VPWR ■ Voltage Pulse, Sine Wave – +12VPWR ■ Open Collector Output Connection Examples ■ Voltage Pulse ■ Relay Contact

  • AC Powered

2 LOAD

  • DC Powered

FACTOR ADJ. Scaler PULSE WIDTH ADJ. SENSITIVITY ADJ. 7.5kΩ +7.5V + 5 + 5 U Specifications are subject to change without notice.