890SD Standalone Drive
Page 5-10 890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D
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Step 2: Connecting Power
In this section we are going to connect the 3-phase supply to the 890SD Standalone Drive(s).
We'll also connect the motor and the (optional) brake resistor.
WARNING
During commissioning, remove the fuses (or trip the circuit breaker) on your 3-phase supply.
Make sure the power is OFF, and that it cannot be switched on accidentally whilst you are working.
Solid-State Short-Circuit Protection
These devices provide Class 10 motor overload protection. The maximum internal overload proection level
(current limit) is 150% for 60 seconds in Constant mode. Refer to Appendix D: Programming - CURRENT
LIMIT for user current limit adjustment information.
An external motor overload protective device must be provided by the installer where the motor has a full-
load Ampere rating of less than 50% of the drive output rating; or when the MOTOR STALLED trip is
TRUE (TRIPS STATUS::DISABLED WORD 1>>MOTOR STALLED); or when the STALL TIME
parameter is increased above 480 seconds.
Refer to the 890 Installation Kit for earth/ground fixing details. Fit the appropriate parts.
Each unit must be permanently earthed according to EN 50178.
For permanent earthing:
A cross-section conductor of at least 10mm² is required. This can be achieved either by using a
single conductor (PE) or by laying a second conductor though separate terminals (PE2 where
provided) and electrically in parallel.
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