Hoffman Controls 610 Series - Page 8

3
.
Refer to
Figure 2, "Current Transformer Alignment"
(page
4) to install the current transformers.
Clamp
a single
current trans-
former on each
power wire
connected to the m
otor's
Starter A
contactor's load side
T1
and
T2
terminals.
4
.
Clamp
a single
current transformer on the power wire
connected to the motor's
Starter
B
contactor's
load side
T
3
terminal
.
Orient this
third CT in the same direction as the two (2)
CTs on the
Starter A
phases
Starter A phases Starter A
T1
and
T
2
.
5
.
Spacing between adjacent CTs, shown in
Figure
2
, is not
critical.
6
.
Referring to
Figure 2
and
Figure
6
, "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
below
.
below.below
Single 610, Three Phase Motor
Current Transformer Wiring Chart
TABLE 3
7
.
Connect 24VAC power as shown in
Figure
6
,
Single
Model
610 Part (Split) Winding Motor Wiring Diagram
(on page 7).
8
.
C
onnect
the
TRIP
relay's
N.C.
terminal to a 24 VAC source
as shown in
Figure
6
.
9
.
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
6
.
10.
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
1
.
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
6
.
12.
If compressor temperature sensing or Modbus communi-
cation is desired,
refer to
Figure
9
,
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
.
8
13.
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
.
Refer to
Installation
Section step
8
, on page 4,
to attach wires
to six (6) CTs.
3
.
Refer to
Figure
2
(page 4) to clamp one (1) current trans-
former
on each of the
power wires (with all CTs facing the same
way)
connected to t
he m
otor's
Starter A
contactor's load side termi-
Starter A contactor's load side termi-Starter A
nals
T1
,
T2
and
T3
.
4
.
Referr
ing to
Figure
7
,
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 Chart
TABLE 4
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 Red CT1+
Black
CT1-
T2
N/A
Red
CT2+
Black CT2-
T3
N/A
Red CT
N/A Red CTN/A
3+
Black CT3-
Starter A Starter B
Terminal Terminal
N/A Red CT1+
Black
N/A
Black CT2-
Black CT3-
Motor Contactor
Starter A Starter B
Terminal Terminal
N/A Red CT1+
Black
N/A
Black CT2-
Red CT
Black CT3-
Motor Contactor
CT Wire
Terminal
N/A Red CT1+
Black
CT2+
Black CT2-
Red 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 Red CT1+
Black CT1-
T2
N/A
Red
CT2+
Black CT2-
N/A
T3
Red CT
3+
Black CT3-
Starter A Starter B
Terminal Terminal
N/A Red CT1+
Black CT1-
N/A
Black CT2-
N/A
Black CT3-
Starter A Starter B
Terminal Terminal
N/A Red CT1+
Black CT1-
N/A
Black CT2-
Red CT
Black CT3-
CT Wire Model 610
PCB Terminal
N/A Red CT1+
Black CT1-
CT2+
Black CT2-
Red CT
Black CT3-