Hoffman Controls Model 610 Series - Dual 610 Part (Split) Winding Motor Installation

7
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2.
Disable all factory wiring connecting the motor to the load
side of the
Starter A
motor contactor.
Starter A motor contactor.Starter A
3
.
Refer to
Figure 1, "Current Transformer Alignment"
(page 3) to install the current transformers.
Place a single
current
transformer on each
power wire
connected to the m
otor
that was
previously connected to
the
Starter A
contactor's load side
Starter A contactor's load side Starter A
T1
and
T2
terminals.
4
.
Re-connect the motor's power
wiring, removed in step
2
above, to the load side of the
Starter A
motor contactor.
5
.
Disconnect the factor
y wiring connecting the motor to the
T3
terminal on the load side of the
Starter
B
motor contactor.
6
.
Refer to
Figure 1
(page 3) to install a single current trans-
former
on the motor's
power wire
that was
previously connected
to
the
Starter
B
contactor's load side
T3
terminal. Orient this
third CT in the same direction as the two (2) CTs on the
Starter A
phases
T1
and
T
2
.
7
.
Spacing between adjacent CTs, shown in
Figure 1
, is not
critical.
8.
Re-connect the motor's power
wiring, removed in step
5
above, to the
T3
terminal on the load side of the
Starter
B
motor
contactor.
9
.
Referring to
Figure 1
and
Figure
4, "Single Model 610 Part
(Split) Winding Motor Wirin
g Diagram"
(page 7),
connect the
current transformer's
wires to the Model 610 Digital Current
Monitor's CT terminals
a
s shown in
Table 3
on
page
8
.
10
.
Connect 24VAC power as shown in
Figure
4,
Single
Model
610 Part (Split) Winding Motor Wiring Diagram
(above).
1
1
.
C
onnect
the
TRIP
relay's
N.C.
terminal to a 24 VAC source
as shown in
Figure
4
.
1
2
.
C
onnect
the
TRIP
relay's
COM
terminal to the 24VAC
side of both the
Starter A
and
Starter A and Starter A
Starter B
motor contactors' coils as
shown in
Figure
4
.
Single 610, Part (Split)
Winding Motor Installation
Con't
Single Model 610 Part (Split) Winding Motor Wiring Diagram
Figure 4