Preset Speeds - Toshiba G3 Workbook

Introduction
Among the many speed references the G3 can accept are dry contact closures which it can be programmed
to interpret as preset speeds. A maximum of fifteen preset speeds can be accessed via four terminals and a
binary implementation. The following example will program all fifteen preset speeds from 5 Hz for Preset
Speed 1 to 75 Hz for Preset Speed 15 in steps of 5 Hz.
In this scenario, the terminals are assigned a value of a power of two. This value is the number of the preset
speed that is active.
With the following programming, S4, S3, S2, and S1 have values of 2
respectively.
Connections
ST
S1
Preset speed selected as function of input contact condition
S4-CC (8) S3-CC (4)
open closed
open open
open closed
closed closed
For additional assistance, please contact Toshiba Adjustable Speed Drive Marketing Dept. at (800) 872-

Preset Speeds

TERMINAL STRIP
CC
S2 S3
S2-CC (2)
open
open
closed
closed
3
, 2
S4
S1-CC (1)
closed
closed
closed
closed
2192
2 1 0
, 2 , and 2 , which are 8, 4, 2, and 1
F CC
CC
Number of Preset Speed
4+1=5
1
4+2+1=7
8+4+2+1=15
4
11