-16-
For Machines Mfg. Since 7/09
Model SB1016/SB1036
P R E P A R A T I O N
Correcting Phase Polarity
(Yaskawa Drive)
This sub-section is only provided for
troubleshooting by a qualified electrician. If
you discover during the test run that the lathe
will not operate, or that one or more motors run
backwards, incorrect phase polarity may be at
fault and will need to be corrected.
To establish the correct phase polarity:
1.
Disconnect the machine from power, wait
15 minutes for the drive unit capacitors to
discharge.
— If the spindle motor rotates in the
incorrect direction, swap any two of the
output wires U, V, or W that are located
at the variable frequency drive shown in
Figure 3
.
Note:
Swapping any two of the L1, L2, or
L3 incoming power leads located at the
input of the machine or frequency drive
has no effect on spindle motor rotation.
U
V
W
79 8?
35
3?
B#
B$
B5
E5
E5
3#
3$
3%
H
35
H
E#
E$
E%
E&
E'
E(
E)
E*
?B B% 5% B& 5&
DB D D E E
E+ E#" E## E#$ #9
?3 ?4 ?5
?#
?$ 79
G7
Varispeed
N6H@6L6
K6G>67A:HE::9JC>I
G:;:GIDN6H@6L6DLC:GHB6CJ6A
11
10
17
15
16
L1
L2
L3
B1
B2
13
12 14
23
18
R/L1
S/L2
T/L3
1
2
B1
B2
U/T1
V/T2
W/T3
Swap any
Two of
These Wires
Figure 3. Spindle motor power supply wires at
variable frequency drive unit.
Grounding Requirements
In the event of certain types of malfunctions or
breakdowns, grounding provides a path of least
resistance for electric current—in order to reduce
the risk of electric shock.
Power supply connections that are hardwired
to the power source must be connected to a
grounded metal permanent wiring system, or
to a system having an equipment-grounding
conductor.
Figure 2. Typical hardwire setup with a locking
disconnect switch.
Serious injury could occur if you connect
the machine to power before completing the
setup process. DO NOT connect to power until
instructed later in this manual.
Due to the complexity required for planning,
bending, and installing the conduit necessary for
a hardwire setup, this type of setup can only be
performed by a qualified electrician.
Power Source
Locking
Disconnect Switch
Machine
Conduit
Conduit
This machine is prewired to operate on a 220V
power supply circuit that has a verified ground
and meets the following requirements:
Circuit Requirements for 220V
(Model SB1016)
Nominal Voltage ............................... 220V/240V
Cycle .............................................................60 Hz
Phase .............................................. Three-Phase
Circuit Rating....................................... 40 Amps
Connection Type ..............Hardwire (Page 24)
