INSTALLATION AND OPERATING INSTRUCTIONS MODEL KBSI-240D Signal Isolator KB Part No. 9431 P1 J1 VOLT CUR MAX 1 2 ! 3 4 MIN 5 6 7 8 9 10 See Safety Warning on Page 1 The information contained in this manual is intended to be accurate. However, the Manufacturer retains the right to make changes in design which may not be included herein. TM A COMPLETE LINE OF MOTOR DRIVES © 2010 KB Electronics, Inc.
TABLE OF CONTENTS Section Page i. Safety Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 I. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 II. Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 III. Wiring . .
i. ! SAFETY WARNING! Please read carefully: This product should be installed and serviced by a qualified technician, electrician, or electrical maintenance person familiar with its operation and the hazards involved.
I. INTRODUCTION The KBSI-240D Signal Isolator is used to isolate, amplify and condition DC voltage and current signals from any source (motors, tachs and transducers) which will drive most variable speed motor controls with a voltage following input. The maximum output voltage of the isolator is 10 volts, which is a linear function of the input signal.
FIGURE 1 – CONTROL LAYOUT & MECHANICAL SPECIFICATIONS (INCHES / [mm]) (Illustrates Factory Setting of Jumpers and Approximate Trimpot Settings) 4.843 [123.00] 0.276 [7.00] 0.276 [7.00] 4.291 [109.00] P1 2.244 [57.0] J1 VOLT CUR MAX 1 2 3 4 MIN 5 6 7 8 9 2.795 [71.
TABLE 1 – GENERAL PERFORMANCE SPECIFICATIONS AC Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 115 or 208 - 230V AC, 50/60 Hz (1) Signal Input Voltage (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 - 25, 0 - 120, 0 - 550V DC Signal Input Current (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 5, 4 - 20, 10 - 50mA (3) Maximum Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
III. WIRING. ! FIGURE 2A – 115V CONNECTION Warning! Read Safety Warning on page 1 before attempting to use this control. 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) – Earth ground the shield on the drive side only. A. B.
i. Current Signal Input FIGURE 3 CURRENT SIGNAL INPUT CONNECTION Warning! Read Safety Warning on Page 1 before attempting to use this control. 5 6 The Signal Isolator accepts 4 – 20 mA DC input to provide 0 – 9 Volts DC output. Connect the current signal input common (–) to Terminal “5” and the positive (+) to Terminal “6”, as shown in Figure 3. Other current signal input ranges can also be used, as described below. Calibrate the Signal Isolator, as described below.
ii. Voltage Input Signal Warning! Read Safety Warning on Page 1 before attempting to use this control. ! Note: The Voltage/Current (VLT/CUR) jumper must be in the VLT position (factory setting).
a) Connect the armature of the main motor to the SI input terminals “5” (-) and “7” (+). b) Set the armature voltage of the main motor to zero (0). Adjust the “MIN” trimpot so that the output at terminals “9” and “10” reads zero (0) volts. c) Reset the armature voltage of the main motor to 90V. Adjust the “MAX” trimpot so that the output voltage is 9V DC. Notes: 1.
FIGURE 5 – LEADER/MULTIPLE FOLLOWER VOLTAGE FOLLOWING SYSTEM A) From a Single Main Motor Main Motor DC Speed Control 10(+) A(+) 7 A(-) 5 P2 KBSI-240D 9(-) F(-) Isolation Diode P2 A 10K ratio potentiometer is used to control up to ten (10) follower motors. If a 5K ratio potentiometer is used, up to five (5) follower motors can be controlled.
FIGURE 6A – LEADER/FOLLOWER VOLTAGE FOLLOWING SYSTEM 90V DC Main Motor AC Line DC Speed Control 7 A(+) KBSI-240D 5 A(-) AC Line AC Line 10(+) P2 9(-) F- L1 Follower Motor #1 L2 Speed Control A(+) A(-) Speed Pot FIGURE 6B – PROCESS CONTROL WITH AUTO/MANUAL SWITCH 5K Pot The KBSI-240D can be wired in an Auto/Manual mode which will allow manual override of an automatic process. See figure 6B.
FIGURE 6C – PROCESS CONTROL WITH AUTO (RATIO POT)/MANUAL SWITCH The following circuit provides for dual purpose usage of the speed pot. In the “AUTO” mode it is used for ratio control and in the “MAN” mode it is used for manual speed adjustment.
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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.
