Electric Company Computer Drive User Manual

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Basic Installation 3-17MN1942
3.4.8 24V control circuit supply
A 24VDC supply m ust be provided to power the controlling electronics. This is useful for safety
reasons where AC power needs to be removed from the power stage but the controlling
electronics must remain powered to retain position and I/O information.
A separate fused 24V supply should be provided for the MicroFlex e100. If other devices are
likely to be powered from the same 24V supply, a filter (Baldor catalog number FI0014A00)
should be installed to isolate the MicroFlex e100 from the rest of the system. Alternatively , a
ferrite sleeve may be attached to the supply cable near connector X2.
Location
Connector X2
Nominal input
voltage
24V
Range 20-30VDC
Input current
Maximum
Typical
1A continuous (4A typical power on surge, limited by NTC)
0.5A - 0.6A (not powering feedback device)
0.6A - 0.8A (powering feedback device)
Tightening torque for terminal block connections is 0.5-0.6Nm (4.4-5.3 lb-in).
Customer s upplied
24VDC
GND
24V filter
(optional)
+24V
STAR
POINT
Incoming s afety
earth/ground (PE)
* Recommended fuse: Bussman S 504 20x5mm anti-surge 2A.
** Recommended ferrite sleeve: Fair-Rite part 0431164281 or similar.
Use a twisted pair cable, with
ferrite sleeve attached close
to connector X2.
Ferrite
sleev e**
Fuse *
Figure 6 - 24V control circuit supply connections