4.3 Wiring the Power Supply to the SERVOPACK
4.3.1 Terminal Symbols and Terminal Names
4-11
4
W
iring and Connecting SER
VOP
ACKs
4.3
Wiring the Power Supply to the SERVOPACK
Refer to the catalog for information on cables and peripheral devices.
4.3.1
Terminal Symbols and Terminal Names
Use the main circuit connector on the SERVOPACK to wire the main circuit power supply and
control circuit power supply to the SERVOPACK.
The SERVOPACKs have the following two types of main circuit power supply input specifica-
tions.
•
Three-Phase, 400-VAC Power Supply Input
*1.
Use an SELV-compliant power supply according to EN/IEC 60950-1 to input 24 VDC to the control power sup-
ply input terminals.
*2.
With the SGD7S-210D, -260D, -280D, or -370D, connect a Regenerative Resistor Unit between B1 and B2.
*3.
The SGD7S-210D, -260D, -280D, and -370D do not have the D1, D2, and D3 terminals.
*4.
Make sure you check the brake specifications of the Servomotor for the 24-VDC power supply input to the Ser-
vomotor brake power supply terminals.
*5.
SERVOPACKs without built-in Servomotor brake control do not have these terminals.
CAUTION
Wire all connections correctly according to the following table and specified reference infor-
mation. There is a risk of SERVOPACK failure or fire if incorrect wiring is performed.
Terminal
Symbols
Terminal Name
Specifications and Reference
L1, L2, L3
Main circuit power supply
input terminals for AC
power supply input
Three-phase, 380 VAC to 480 VAC, -15% to +10%, 50 Hz/60
Hz
24 V
Control power supply termi-
nals
*1
24 VDC, -15% to +15%
0 V
0 VDC
B1, B2, B3
*2
Regenerative Resistor termi-
nal
4.3.5 Wiring Regenerative Resistors
If the internal regenerative resistor is insufficient, remove the
lead or short bar between B2 and B3 and connect an Exter-
nal Regenerative Resistor between B1 and B2.
The External Regenerative Resistor is not included. Obtain it
separately.
1, 2
DC Reactor terminals for
power supply harmonic
suppression
4.3.6 Wiring Reactors for Harmonic Suppression
These terminals are used to connect a DC Reactor for power
supply harmonic suppression or power factor improvement.
,
−
None. (Do not connect anything to this terminal.)
U, V, W, PE
Servomotor terminals
These are the
Σ
-7S connection terminals for the Servomotor
Main Circuit Cable (power line).
Note: Do not connect the PE terminal to anything other than a ground
terminal.
D1, D2, D3
*3
Dynamic Brake Resistor ter-
minals
In the following cases, remove the lead or short bar between
D2 and D3 and connect a Dynamic Brake Resistor between
D1 and D2.
•
To specify the brake torque when stopping with the
dynamic brake
•
To use a larger load moment of inertia than in the standard
specifications
The Dynamic Brake Resistor is not included. Obtain it sepa-
rately.
DC+
*5
Servomotor brake power
supply terminals
*4
24 VDC
DC-
*5
0 VDC
BK+, BK-
*5
Servomotor brake terminals
Connect these terminals to the Servomotor’s holding brake
terminals. The holding brake terminals on the Servomotor do
not have any polarity.
Ground terminal
The ground terminals to prevent electric shock. Always con-
nect this terminal.