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Introduction 
The 890 Common Bus units are designed for speed control of standard ac 3-phase motors. The 
common bus scheme consists of one 890CS (Common Bus Supply) and one or more 890CD 
(Common Bus Drives). 
 
3-phase power is supplied to the 890CS. Power (DC) is bussed from the 890CS to all 890CDs using 
the SSD_Rail busbar system. A motor is connected to each 890CD unit. 
 
•  Control the system remotely using configurable analogue and digital inputs and outputs. 
 
•  Control the 890CD locally using the 6511 Keypad. 
 
•  Use the Design System Explorer Configuration Tool (DSE 890) to give access to 890CD 
parameters, diagnostic messages, trip settings and application programming.  
 
•  Fit Options to the 890CD to give serial communications and closed loop speed control. 
 
IMPORTANT 
Motors used must be suitable for Inverter duty. 
About this QuickStart 
This QuickStart will: 
 
•  Familiarise you with the terminals and operation of the unit. 
• Provide 
*basic installation details and a quick set-up procedure. 
•  Show you how to Autotune the 890CD and start the motor. 
 
*  Because the 890 is a system product and we have no knowledge of your application, we detail 
the quickest way to power-up the drive using a simple earthing scheme with minimal control 
wiring. Refer to the full Engineering Reference Manual for items not covered in this QuickStart. 
 
Provided with every 890 unit is a: 
z Quickstart 
z Compact disk containing the Engineering Reference Manual and DSE Configuration Tool 
z 890 Installation Kit and instruction leaflet 
z 6511 Keypad 
z Customer-ordered Options 
This QuickStart assumes that: 
•  You are a qualified technician with experience of installing this type of equipment. 
 
•  You are familiar with the relevant standards and Local Electric Codes (which take precedence). 
 
•  You have read and understood the Safety information provided at the front of this QuickStart. 
 
•  You realise that this guide contains only basic information and that you may need to refer to the 
Engineering Reference Manual to complete your installation. 
 
•  You are not using the Safe Torque Off (STO) feature of this product and that you will disable it as 
instructed in this QuickStart manual. 
Safety Note – Use of the STO feature requires full compliance with the STO chapter 6 of the 
Engineering Reference Manual to which the user must first refer.