DUPLOMATIC E.M.DDC4-400V/RK RELEASE 1.9 07-09
EM DDC4-400-RK-0709gb.doc 7
2. ELECTRICAL CONNECTIONS
Refer to the annex diagrams at section 5:
1. : wiring diagrams for installation into the electrical cabinet.
2. : wiring diagrams for installation into the turret
SUPPLY
POWER SUPPLY 400 VAC 3 Φ
(see tab1)
The control unit requires a three-phase 400 VAC input for the power card.
A power contactor on the 400 AC line must be used for emergency stop (see wiring diagram).
The 400 VAC line must be protected with external fuses 6 A T.(suggested 4-6.3 A motor start).
An external filter is required to meet E.M.C. compliance (optional).
SUPPLY 24 VDC
(see tab1)
The control unit requires an external 24V DC supply CM1 to build up all auxiliary supply necessary for the
driver section. And I/O to CNC An external slow-type fuse of 1 A must be used to protect this supply.
POWER SUPPLY 24VDC FOR ELECTROVALVES
(see tab 2)
The electrovalve s are operated by relays inside RACK, requiring a second 24 V DC source on CM2. The max
current consumption is related on the load on its outputs and is about 2,0 A So a fuse of 3,15 A T is a good
protection.
TECHNICAL SPECIFICATIONS FOR POWER TRANSFORMER DESIGN
Important: check the voltage drop on the 400 VAC supply during acceleration, to be sure that this doesn’t
approach the indicated voltage limits.
Rated primary voltage Variable
Secondary rated voltage
400 VCA ± 10% 3 Φ
Rated Power 1200 VA
Max voltage drop at 10 A rms (during
acceleration)
5%
Connection star-star or delta-star
Secondary voltage deviation ± 2%
tab 4
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