Chapter 2. Wiring | VFD-VJ
2-13
Motor
Terminal Identification Description
R/L1, S/L2, T/L3 AC line input terminals 3-phase
U/T1, V/T2, W/T3 Output terminals of the hybrid servo drive that are connected to the motor
+1, +2/B1
Terminals to connect to DC reactor to improve the power factor. Remove the
RFI switch before connecting a DC reactor to a hybrid servo drive.
(DC reactor is built in for models ≧ 45KW)
+2/b1, B2
Terminals to connect to brake resistor (optional, see Appendix A-1 for more
information)
Grounding Terminal, please comply with local regulations.
Power supply input terminals for the main circuit:
Do not connect 3-phase model to one-phase power. R/L1, S/L2 and T/L3 has no
phase-sequence requirement, it can be used upon random selection.
Connect these terminals (R/L1, S/L2, T/L3) via a non-fuse breaker or an earth
leakage breaker to the three-phase AC power for circuit protection. It is
unnecessary to consider phase-sequence.
It is recommend adding a magnetic contactor (MC) to the power input wiring to
cut off power quickly and reduce malfunction when activating the protection
function of the AC motor drive. Both ends of the MC should have an R-C surge
absorber.
Fasten the screws in the main circuit terminal to prevent sparks condition made
by the loose screws due to vibration.
Please use voltage and current within the specification. Please refer to Chapter 1
for the specifications.
When using a general GFCI (Ground Fault Circuit Interrupter), select a current
sensor with sensitivity of 200mA or above and not less than 0.1-second
operation time to avoid nuisance tripping.
Please use the shield wire or tube for the power wiring and ground the two ends
of the shield wire or tube.
Output terminals for the main circuit:
When it needs to install the filter at the output side of terminals U/T1, V/T2, W/T3
on the hybrid servo drive. Please use inductance filter. Do not use
phase-compensation capacitors or L-C (Inductance-Capacitance) or R-C
(Resistance-Capacitance), unless approved by Delta.
DO NOT connect phase-compensation capacitors or surge absorbers at the
output terminals of hybrid servo drives.
The terminals of the DC reactor [
＋
1,
＋
2],
This is the terminals used to connect the DC reactor to improve the power factor.
For the factory setting, it connects the short-circuit object. Please remove this
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