User Guide

“The Right Control for Your Application.”
12095 NW 39 Street, Coral Springs, FL 33065-2516
KB Electronics, Inc. Telephone: [phone]; Fax: [phone]
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(A42136) - Rev. B00 - 11/02/2004 - Z3269B00 Page 3 of 4
4 MSB Operating Instructions
4.1 A preset speed is selected with a contact closure or open collector wired between "COM" and either "PS 1", "PS 2", "PS 3", or "PS
4" of Terminal Block TB1. Wire the contact or open collector as shown in Figure 5.
Wire Guage Range (AWG - Cu): 24 - 14. Maximum Tightening Torque: 3.5 in-lbs.
(Note: The maximum operating current for each preset is 1.5 mA DC.)
Figure 5 - MSB Terminal Block TB1 Connection Diagrams
Switch Form C Contacts Open Collector
4.2 Motor direction for each preset is selected by the position of Jumper R/F (Reverse/Forward). All presets have been factory set for
Forward Motor Direction (Jumpers R/F set to the "F" position). See Figure 6.
Figure 6 - Motor Direction Selection (Jumper R/F)
Forward Motor Direction
(Factory Setting) Reverse Motor Direction
(Jumper R/F In "F" Position) (Jumper R/F In "R" Position)
4.3 To improve the resolution of the trimpots, several ranges are provided. The motor speed range for each preset is selected with
Jumpers HI and LO. All speed range jumpers have been factory set for Full Speed Range (Jumpers LO and HI installed). See
Figure 7. (Note: The maximum speed is based on the MAX Trimpot setting.)
Figure 7 - Speed Range Selection (Jumpers LO and HI)
Full Speed Range
(0 - 100 % of MAX Speed)
(Factory Setting)
Low Speed Range
(0 - 50 % of MAX Speed)
Medium Speed Range
(33 - 66 % of MAX Speed)
High Speed Range
(50 - 100 % of MAX Speed)
(Jumper LO Installed)
(Jumper HI Installed)
(Jumper LO Installed)
(Jumper HI Not Installed)
(Jumper LO Not Installed)
(Jumper HI Not Installed)
(Jumper LO Not Installed)
(Jumper HI Installed)
4.4 The speed for each preset can be fine tuned using the adjustable trimpots. All trimpots have been factory set for 50% speed. See
Figure 8. (Note: The maximum speed is based on the MAX Trimpot setting.)
Figure 8 - Speed Trimpot Range
% of Range Setting
(Factory Set to 50%)