*
For additional assistance, please contact Toshiba Adjustable Speed Drive Marketing Dept. at (800) 872-
2192
11
4
Preset Speeds
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
3
, 2
2
, 2
1
, and 2
0
, which are 8, 4, 2, and 1
respectively.
Connections
TERMINAL STRIP
ST CC F CC
S1 S2 S3 S4 CC
Preset speed selected as function of input contact condition
S4-CC (8)
S3-CC (4)
S2-CC (2)
S1-CC (1)
Number of Preset Speed
open closed open
closed
4+1=5
open open open closed
1
open closed closed closed
4+2+1=7
closed closed closed
closed
8+4+2+1=15
