A1.2 Ds9000 Or Ds9000A, How To Select The Right Model; A1.2.1 When To Use The Ds9000; A1.2.2 When To Use The Ds9000A - Seco DS9000 Installation & Operation Manual

A1.2 DS9000 OR DS9000A, HOW TO SELECT THE RIGHT MODEL

Connections between the DS9000/DS9000A and the AC or DC Drive/Motor being controlled by the
Digital Front End are identical for either model. Figure 1 shows the typical minimum requirements
for DS9000.
Figure 1 Standard DS9000/A Connection Requirements
The digital feedback can be a ring kit or an encoder. Logic control for the DS9000/DS9000A could
include selection of Preset Speed or Ratio, Parameter Table selection, Security or Following error
alarm output connections. Refer to the DS9000 Instruction portion of this Manual, and the
Instruction Manual for the Drive used for complete connection information.

A1.2.1 WHEN TO USE THE DS9000

If the application requires a Digital Front End to set the motor speed to hold speed to within ±0.05%
of motor base speed with the speed set by entering a speed into the DS9000 in either RPM or
engineering units, then the DS9000 would be the correct choice (Function A).
For applications where a Motor is to follow the speed of a Master rotary motion (any motor or roller
or any rotary motion that a ring kit or encoder can be mechanically coupled) and digital reference
signal is available, the DS9000 can be used by programming a ratio value into the DS9000 through the
keypad (Function B).

A1.2.2 WHEN TO USE THE DS9000A

If the application requires a Digital Front End to set the motor speed but requires the ability to set the
speed reference with a 0-10 VDC or 4-20 mA analog input or with a Speed Pot., then the DS9000
would be the correct choice (Mode 1).
For applications, similar to Function B, where a Motor is to follow the speed of a Master rotary
motion with a digital reference signal, but the ratio is to be set by an external 0-10 VDC or 4-20 mA
analog input or with a Speed Pot., the DS9000A would be required (Mode 3).
For a Follower application where a Digital Reference signal is not available but an analog 0-10 VDC or
4-20 mA analog input can be used as the Master reference, the DS9000A would be required (Mode 2).
The ratio is still set in the DS9000 by using the keypad.
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