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Risk Assessment 
Under fault conditions, power loss or other operating conditions not intended, the 
equipment may not operate as specified. In particular: 
•  The motor speed may not be controlled 
•  The direction of rotation of the motor may not be controlled 
•  The motor may be energized 
 
If the STO feature of the 890 drive is to be used, the user must undertake a risk 
assessment for the application. The user must then verify that their design, which 
includes the 890 drive, satisfies the Performance Level (PL) or Safety Integrity Level 
(SIL) required by the risk assessment.  
 
Under no circumstances must the STO feature be used without first reading and fully 
understanding chapter 6 (Safe Torque Off) of the Engineering Reference Manual. All 
safety warnings therein must be observed. 
Accessibility 
All live power terminals are IP20 rated only, since the equipment is intended to be 
installed within a normally-closed cubicle or enclosure, which itself requires a tool to 
open. 
Protective Insulation 
•  All control and signal terminals are SELV, i.e. protected by double insulation. 
Ensure all wiring is rated for the highest system voltage. 
NOTE   Thermal sensors contained within the motor must be single/basic insulated. 
•  All exposed metalwork in the Drive is protected by basic insulation and bonding to 
a safety earth. 
RCDs 
Not recommended for use with this product. Where their use is mandatory, use only 
Type B RCDs (EN61009). 
 
 
 
Caution   
This is a product of the restricted sales distribution class according to IEC 61800-3. It 
is designated as “professional equipment” as defined in EN61000-3-2. Permission of 
the supply authority shall be obtained before connection to the low voltage supply.