Friday, 10 June 2011 17:45 Last Updated on Sunday, 28 August 2011 23:56 Written by Administrator

JH5700 FREQUENCY INPUT
DIN-RAIL MOUNT TRANSMITTER    
  • Full Scale Frequencies from 10Hz to 100kHz
  • Expanded Scale (Elevated-Zero) Ranges Available
  • Adjustable Sensitivity Threshold
  • Pull-up Resistor and Sensor Excitation Included
  • Quick-Check Red/Green Output LED's
  • Unpluggable Terminal Strip
  • AC or DC Power Options

JH5700
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DATA SHEET

JH5700
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MANUAL

Model JH5700 provides a DC output proportional to the input signal's frequency or pulse rate. A fixed-range device, it is precisely calibrated to your specified ranges at the factory.

The JH5700 accepts input amplitudes from 25mV (50mV pk-pk - see specifications) to 350V peak without recalibration. A sensitivity adjustment provides optimum tradeoff between sensitivity and noise rejection for each application. Terminal connections allow the selection of two options: a pull-up resistor for dry-contact or open-collector inputs and a built-in DC excitation supply (approx. 18V) for low-current DC proximity sensors (25mA max.)

Input / Output isolation guards against shock hazards with high-voltage inputs and ground loop errors with low-level signals. AC or DC power choices available.

ORDERING INFORMATION

Model Number:  JH5700. Add suffix A (for example, JH5700A) for AC power, D for DC power.
Input Range:  Specify any frequency range allowed by the "Input Capabilities" spec, below.
Output Range:  Specify any DC voltage or current range allowed by the "Output Capabilities" spec, below.
Power:  Specify 115Vac, 230Vac, 12Vdc or 24Vdc.
Reverse-Acting Transmitter (decreasing output with increasing input):  Change last digit of the model number to 1 (for example, JH5701A).
Loop-Powered Output:  4/20mA "current sink" output stage for connection to devices whose inputs provide 24Vdc loop excitation. Change last digit of the model number to 2 (for example, JH5702A).
Urethane Coating:  Specify Option U.

JH5700 Series transmitters snap onto 35mm DIN rail. Connections are made to the front-panel terminals. The terminal strip unplugs to facilitate calibrating or replacing the transmitter.

Connections to the 8 terminals (top to bottom) are:

    1:  Frequency input (for normal inputs use terminals 1 & 2).
    2:  Input Common.
    3:  +18V (approx.) sensor excitation voltage output. See specifications.
    4:  Pull-up resistor (10K to +9V). Jumper terminals 1 and 4 together for use with dry contact or open-collector (NPN) inputs.
    5:  Output plus.
    6:  Output minus.
    7:  Power (AC or, if DC power option, DC plus).
    8:  Power (AC or, if DC power option, DC minus).

SENSITIVITY ADJUSTMENT

The sensitivity trimpot sets the threshold below which the the unit will not respond. Clockwise provides maximum sensitivity and Counterclockwise minimum sensitivity (see specifications below).

DETAILED SPECIFICATIONS

Input Capabilities:  Min. span 10Hz, max. frequency 100kHz. Low-end input may be zero, or may be as high as 2.5 times span (e.g. 20Hz span with 50Hz elevation, for 50/70Hz range). Input impedance: 200K or greater.
Input Amplitude:  350V peak (700V pk-pk, 250V rms sine wave) maximum.
Threshold Adjustment:  25 turn trimpot. Max. sensitivity (full cw): 50mV pk-pk for frequencies below 1kHz. Increases to 1V pk-pk at 100kHz.
Input Pull-up Resistor:  10K to +9V. Jumper terminals 1 and 4 to activate.
Input Sensor Excitation:  Approximately 18Vdc unregulated, 25mA maximum current at terminal 3.
Voltage Output Capabilities:  1 volt minimum output span, -10 to +15V absolute limit. Offset ranges are allowed. Maximum output load, 10mA (1K at 10V output).
Current Output Capabilities:  1mA minimum output span, 0 to +25mA absolute limit. Positive offsets are allowed, negative outputs are not. Output drive capability, 24V (1,200 ohms max. at 20mA output).
Accuracy:  +/-0.1% of span or better.
Adjustability:  Zero and span each are adjustable approx. +/-15% of span.
Linearity:  +/-0.1% of span or better.
Isolation:  3-way (Power/Input/Output) 1,500Vac rms (2,100V peak).
Operating Temperature:  -10 to +60˚C (14 to 140˚F).
Temperature Stability:  +/-0.02% per ˚C, or better.
Power Requirements:  AC, 115 or 230Vrms, 50/60Hz, 2.5W. DC, 12 or 24V, 2.5W.