Hoffman Controls Model 610 Series - Page 8

Single 610, Three Phase Motor
Current Transformer Wiring
Table 3
13.
Verify the
Starter A
and
Starter A and Starter A
Starter B
, 24 VAC coils are wired
in parallel with the Model 610
TRIP
relay's
COM
terminal.
1
4
.
If an
alarm notification is desired connect the alarm's 24
VAC wires to the
ALARM
relay's
N.O.
and
COM
terminals,
as
shown in
Figure
4
.
15.
If compressor temperature sensing or Modbus communi-
cation is desired,
refer to
Figure 7
,
Model 610 Exhaust Sensor,
Oil Sensor and Modbus Wiring Diagram
(
page 13
)
and the
Compressor Temperature Sensing Information
section (page 12 )
and / or the
Mobus RTU Installation
section (page 15)
for details
.
16.
This completes the
Single 610 Part (Split) Winding
Motor's
Single 610 Part (Split) Winding Motor'sSingle 610 Part (Split) Winding
Model
610 Digital Current Monitor's hardware installation.
Continue with the
Normal Operation
section on page 11.
1
.
Disable all line pow
er going to the
Starter A
and
Starter A and Starter A
Starter B
motor contactors and split winding motor.
2
.
Disconnect all factor
y 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
(page 3) to place one (1) current trans-
former
on each of the
power wires (with all CTs facing the same
8
way)
connected to t
he m
otor
that were
previously connected to
the
Starter A
contactor's load side terminals
Starter A contactor's load side terminals Starter A
T1
,
T2
and
T3
.
4
.
Referr
ing to
Figure
5
,
Dual Model 610 Part (Split) Winding
Motor Wiring Diagram
(page 9). Connect each of the current
transformer's
wires to the
# 1
Model 610 Digital Current
Monitor's CT terminals
a
s shown in
Table 4
(below)
.
Dual 610 Part (Split) Winding Motor Starter A
Current Transformer
Wiring
TABLE 4
5
.
Re-connect the motor's power
w
i
ring, removed
in
step
2
above, t
o the load side of the
Starter A
motor contactor.
6
.
Disconnect all factor
y wiring connecting the motor to the load
side of the
Starter
B
motor contactor.
7
.
Refer to
Figure 1
(page 3) to place three current transformers,
one (1) current transformer
on each of the
power wires
(with all
CTs facing the same way)
connected to the m
otor
that were
previ-
ously connected to
the
Starter
B
contactor's load side terminals
T1
,
T2
and
T3
.
8
.
Re-connect the motor's power
wiring, removed in step
6
above, to the load side of the
Starter
B
motor contactor.
9
.
Referring to
Figure
5
,
Dual Model 610 Part (Split) Winding
Motor Wiring Diagram
(page 9),
connect the current transformer's
wires to the
# 2
Model 610 Digital Current Monitor's CT termi-
nals
a
s shown in
Table 5
(
page
11
)
.
10
.
Connect 24 VAC power as show
n in
Figure
5,
“
Dual
Model
6
10 Part (Split) Winding Motor Wiring Diagram
” (page 9) to
both the
#
1
and
#
2
Model 610's.
1
1
.
C
onnect a
24 VAC source to
the
#
2
Model 610
TRIP
relay's
N.C.
terminal, as shown in
Figure 5
.
1
2
.
C
onnect
the
#
2
Model 610
TRIP
relay's
COM
terminal
to
the
#
1
Model 610
TRIP
relay's
N.C.
terminal
, as shown in
Figure
5.
Continued on page 11
Single 610 Part (Split)
Winding Motor Installation
Con't
WARNING:
Current Transformer wires
must
be c
must be cmust
onnected to
the Model 610 Digital Current Monitor's terminal
block before operation of the motor. The Current
Transformers will generate high voltages if the wires
are left unconnected (open circuited).
Dual 610 Part (Split) Winding
Motor Installation
WARNING:
Disconnect power from the motor(s) and ensure the motor(s)
is/are electrically disabled prior to the Model 610 Digital
Current Monitor's installation.
Motor Contactor
#
1
Model 610
Starter A Starter B
CT Wire
PCB
Terminal Terminal
Color
Terminal
Color TerminalColor
T
1
N/A White CT1+
Black
CT1-
T2
N/A
White CT2+
Black CT2-
T3
N/A
White CT
N/A White CTN/A
3+
Black CT3-
Starter A Starter B
Terminal Terminal
N/A White CT1+
Black
N/A
Black CT2-
Black CT3-
Motor Contactor
Starter A Starter B
Terminal Terminal
N/A White CT1+
Black
N/A
Black CT2-
White CT
Black CT3-
CT Wire
Terminal
N/A White CT1+
Black
White CT2+
Black CT2-
White CT
Black CT3-
Motor Contactor
Starter A Starter B
CT Wire Model 610
Terminal Terminal
Color
PCB Terminal
Color PCB TerminalColor
T
1
N/A White CT1+
Black CT1-
T2
N/A
White CT2+
Black CT2-
N/A
T3
White CT
3+
Black CT3-
Starter A Starter B
Terminal Terminal
N/A White CT1+
Black CT1-
N/A
Black CT2-
N/A
Black CT3-
Motor Contactor
Starter A Starter B
Terminal Terminal
N/A White CT1+
Black CT1-
N/A
Black CT2-
White CT
Black CT3-
CT Wire Model 610
PCB Terminal
N/A White CT1+
Black CT1-
White CT2+
Black CT2-
White CT
Black CT3-