Installing the Drive 3-17
DC590+ Series DC Digital Drive
Power Connections
3-Phase Supply, 3-Phase External Contactor
L1
L2
L3
3
4
Connect the
main ac
power to
busbar
terminals L1,
L2 & L3 via
the Branch
Protection,
AC Filter
(optional),
3-Phase
External
Contactor,
and AC Line
Choke.
Connect the
contactor coil
to terminals 3
(Line) and 4
(Neutral).
Frame 3: Terminals 3 & 4 = D5 & D6 : Frame H & Frame 6: Terminals 3 & 4 = C & N
Main AC Power
There is no specific phase connection to terminals L1, L2 and L3 as the controller is
phase rotation independent.
Branch Protection
AC current = 0.83 x DC Armature Current
You must provide branch circuit protection using a suitable fuse or Type 2 circuit breaker
(RCD, ELCB, GFCI circuit breakers are not recommended, refer to “37HEarth Fault
Monitoring Systems”, page 38H3-62). Also refer to Appendix B: “Certification” - Conditions
for Compliance with UL508c.
Semi-Conductor Protection
Frame H drives contain high speed semi-conductor fuses. For all other frame sizes,
always provide high-speed thyristor fusing to protect the thyristor stack in the case of
direct output short circuits. Semiconductor fuses may be used as Branch Protection on
single-drive systems.
IMPORTANT
If a motor becomes completely short-circuited, the current trip
(OVER I TRIP) will not protect the Drive.
Refer to Appendix E: “Technical Specifications” - External Power Semiconductor
Protection Fuses.
AC Filter (optional)
Refer to "39HExternal AC Supply EMC Filter Installation", page 40H3-60.
DC
DRIVE
CHOKE
CON
FILTER
(optional)
Diagram shows
correct
placement
of units
Semiconductor
Fuses
Branch
Protection
Fuses
590AC LINE
CHOKE FILTER
CO468398
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