User manual KB ELECTRONICS KBSI-240D

[. . . ] Please read carefully: Be sure to follow all instructions carefully. Fire and/or electrocution can result due to improper use of this product. This product should be installed and serviced by a qualified technician, electrician, or electrical maintenance person familiar with its operation and the hazard involved. Proper installation, which includes wiring, mounting in proper enclosure, fusing or other over current protection and grounding, can reduce the chance of electric shocks, fires, or explosion in this product or products used with this product, such as electric motors, switches, coils, solenoids, and relays. [. . . ] To achieve full specifications input voltage must be within ± 10% of nominal. Floating (non-grounded) or grounded input signal may be used. To change from 4 - 20mA to 1 - 5mA remove R3. To convert to 10 - 50mA add a 150 1W resistor across terminals "5" and "6. " See figure 3. Specifications are based on an output of 10 volts. 4 III. WIRING. FIGURE 2A ­ 115V CONNECTION ! Warning!Read Safety Warning on page 1 before attempting to use this control. 1 2 3 4 Warning!To avoid erratic operation do not bundle AC Line and motor wires with potentiometer, voltage following, enable, inhibit or other signal wiring. Use shielded cables on all signal wiring over 12" (30 cm) ­ Do not ground shield. AC Power ­ The KBSI-240D is powered with either 115 or 230V AC, 50/60 Hz by arranging the jumpers between terminals "1" to "4" properly. Be sure unit is wired in accordance with the National Electric Code and other codes that may apply. It is recommended that a 1 amp fuse be installed in series with the AC line. Input Terminals ­ A voltage or current signal from a microprocessor, tachometer, transducer, etc. is to be connected to terminals "5" through "8. " The selection of the proper terminal is based on the maximum level of the input signal. See figures 3 and 4. Jumper Jumper 1A FUSE 115V AC FIGURE 2B ­ 230V CONNECTION 1 2 3 4 B. Jumper 1A FUSE 230V AC 5 i. Current Input Signal FIGURE 3 ­ CURRENT INPUT SIGNAL CONNECTION ! Warning!Read Safety Warning on Page 1 before attempting to use this control. 5 6 Note: The Voltage/Current (VLT/CUR) jumper must be in "CUR" position. Connect the negative current signal input to terminal "5" and the positive to terminal "6. " The KBSI-240D is factory calibrat150 Resistor Converts 4 - 20mA ed so that a 4 - 20mA signal will provide a 0 - 9 Volt output. The to 10 - 50mA ­ + input range can be converted to a 10 - 50mA range by attaching a 4 - 20mA 150 1W resistor across the current input terminals "5" and "6. " See figure 3. Control must be recalibrated when the 150 resistor is installed. The range of signal input can be changed to 1 - 5mA by removing resistor R3 from the printed circuit board. Recalibrate the Signal Isolator to follow a 4 - 20mA current signal input as follows: 1. 6 Connect a 10V DC meter (digital DC meter is suggested) to terminals "9"(-) & "10" (+). Apply the minimum input current (4mA) at terminals "5" and "6. " Adjust the "MIN" trimpot to an output voltage of 0 volt DC. [. . . ] 11 ­ NOTES ­ 12 ­ NOTES ­ 13 V. LIMITED WARRANTY For a period of 18 months from the date of original purchase, KB Electronics, Inc. will repair or replace, without charge, devices which our examination proves to be defective in material or workmanship. This warranty is valid if the unit has not been tampered with by unauthorized persons, misused, abused, or improperly installed and has been used in accordance with the instructions and/or ratings supplied. [. . . ]