Appendix B
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22
MANUAL # 9675-1035-000-A
B-9 Power Input and Motor Output
The signal names for power are listed below:
Pin Name
Description
--------------
----------------------------------
L1, L2, L3
Input - AC voltage (line 1, line 2, and line 3, respectively).
PE
Protective Earthing, Chassis GND.
B+
Output - DC BUS +.
B-
Output - DC BUS Return.
R1
Output - Brake/Regen resistor.
R2
Output - Brake/Regen resistor.
PHASE T1
Output - Motor phase T1.
PHASE T2
Output - Motor phase T2.
PHASE T3
Output - Motor phase T3.
L1, L2, and L3 are 3-phase, 208-240 VAC, 50/60 Hz AC inputs. The maximum inrush current at power
up is 510 A @ 240 VAC.
B+ and B- are unregulated DC BUS output (derived from 3-phase inputs). Total DC BUS capacitance is
4,080 uF. BUS under-voltage trips nominally at 50 VDC ± 5%. BUS overvoltage trips nominally at
450 VDC ± 5%.
R1 and R2 are external Regen resistor (brake) outputs. Acceptable resistance range is 12 - 30 Ohms.
Regen turns on at 395 VDC ± 5%. Regen circuit uses a Ferraz Shawmut TRS10R time delay fuse.
Motor power is delivered at pins PHASE T1, T2 and T3. The motor power is Pulse Width Modulated
signals used to drive the motor.
It is recommended that the wire size for 3-phase AC inputs and motor outputs is 8 AWG (8.36 mm
2
)
or larger, 105°C rated PVC or better.
It is recommended that the wire size for DC BUS, and Brake/Regen resistor inputs is 10 AWG (5.26 mm²)
or larger, 105°C rated PVC or better.
Note
: It is best not to connect the motor power pins until it is established that the logic section is working
and operational. This means that with the AC input pins connected, one should be able to communicate
with the spindle drive via a serial cable and the motor encoder feedback should be functioning properly.
