JH5700 FREQUENCY INPUT
DIN-RAIL MOUNT TRANSMITTER
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.
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).
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).