2-2 Installation
MN1221
Mechanical Installation
The BPS must be securely fastened to the mounting surface by the BPS mounting holes.
The location of the mounting holes is shown in Section 3 of this manual.
Electrical Installation
All interconnection wires between the BPS, control, AC power source, motor, host control
and any operator interface stations should be in metal conduits. Use listed closed loop
connectors that are of appropriate size for wire gauge being used. Connectors are to be
installed using crimp tool specified by the manufacturer of the connector. Only class 1
wiring should be used.
System Grounding
The BPS is designed to be powered from standard three phase lines that are electrically
symmetrical with respect to ground. System grounding is an important step in the overall
installation to prevent problems. The recommended grounding method is shown in
Figure 2-1 and 2-2.
Figure 2-1 Recommended System Grounding for UL
V
L1
AC Main
Supply
Safety
Ground
Driven Earth
Ground Rod
(Plant Ground)
Four Wire
“Wye”
L1
L2
L3
Earth
L2 L3
U
W
Route all 4 wires L1, L2, L3 and Earth
(Ground) together in conduit or cable.
Route all 4 wires U, V, W and Motor Ground together
in conduit or cable. Connect wires (including motor
ground) inside the motor terminal box.
Note:
Wiring shown for clarity of grounding method
only. Not representative of actual terminal
block location.
BPS
DBSC
Control
Ground per NEC
and Local codes.
Figure 2-2 Recommended System Grounding for CE
V
L1
AC Main
Supply
Safety
Ground
Driven Earth
Ground Rod
(Plant Ground)
Four Wire
“Wye”
L1
L2
L3
Earth
L2 L3
U
W
Route all 4 wires L1, L2, L3 and Earth
(Ground) together in conduit or cable.
Route all 4 wires U, V, W and Motor Ground together
in conduit or cable. Connect wires (including motor
ground) inside the motor terminal box.
Note:
Wiring shown for clarity of grounding method
only. Not representative of actual terminal
block location.
BPS
DBSC
Control
Note:
Use shielded cable for control signal wires. Route control signal wires in
conduit. These wires must be kept separate from power and motor wires.
Enclosure Backplane
All shields
