Hoffman Controls 610 Series - Oil Temperature Sensor Installation; Initial Checkout Procedure

15
1
.
Select a temperature sensor mounting configuration that
provides a safe and reliable temperature signal for the application.
Always select a temperature sensor that exceeds the highest expected
compressor discharge temperature. When available, select a wire
length longer than required for the application.
2.
If additional wire is needed, use 22AWG (minimum) shielded
stranded, twisted pair cable properly insulated for the application.
The maximum length of additional
22AWG
wire is 75 feet. For
longer distances, consult the factory.
3
.
Follow the exhaust temperature sensor manufacturer's instruc-
tions and recommendations when installing the exhaust sensor on
the compressor's discharge line.
4
.
After securely mounting the sensor, refer to
Figure 9,
Model 610 Exhaust Sensor, Oil Sensor and Modbus Wiring
Diagram
,
(page 13) to connect the exhaust sensor's wires to the
EXHS+
and
EXHS-
terminals on the Model 610. Either exhaust
sensor wire
c
an be connected to either of the
EXHS+
or
EXHS
-
terminals.
5
)
When using two (2) Model 610 Digital Current Monitors
for the Dual Model 610 Part (Split) Winding Motor installation,
wire
the exhaust sensor wires to
either
of
the
#1
and
#2
Model 610
EXHS+
and
EXHS-
terminals
.
NOTE:
In this case, the
#1
and
#2
Model 610's Modbus RTU
addresses will be different. Therefore,
both
the
#1
and
#2
Model
610's register data, excluding the Modbus addresses,
must
be iden-
must be iden-must
tical.
6
)
Refer to the
Sequence of Operation
section, steps 10 thru 14
(page 17) for selecting the exhaust sensor's
temperature
trip value
.
7)
This completes the
Model 610's exhaust sensor hardware
installatio
n
.
1
.
Select a mounting configuration that provides a safe and
reliable temperature signal for the application. Always select a
temperature sensor that exceeds the highest and lowest expected
oil temperature(s). When available, select a wire length longer than
required for the application.
2.
If additional wire is needed, use 22AWG (minimum) shielded
stranded, twisted pair cable properly insulated for the application.
The maximum length of additional
22AWG
wire is 75 feet. For
longer distances, consult factory.
3
.
Follow the oil temperature sensor manufacturer's instructions
and recommendations when installing the oil sensor on / in the
compressor's crankcase.
4
.
After mounting the sensor, refer to
Figure 9,
Model 610
Exhaust Sensor, Oil Sensor and Modbus Wiring Diagram
(page
13)
,
to connect the oil sensor's wires to the
OIL+
and
OIL-
termi-
nals on the Model 610. Either sensor wire can be connected to
either of the
OIL+
or
OIL-
terminals.
Modbus RTU Installation
5
)
When using two (2) Model 610 Digital Current Monitors for
the Dual Model 610 Part (Split) Winding Motor installation,
wire
the oil sensor wires to
either
of
the
#1
and
#2
Model 610
OIL
+
and
OIL
-
terminals
.
NOTE:
In this case, the
#1
and
#2
Model 610's Modbus RTU
addresses will be different. Therefore,
both
the
#1
and
#2
Model
610's register data, excluding the Modbus addresses,
must
be
must be must
identical.
6
)
Refer to the
Sequence of Operation
section (pages 17 &
18), steps 15 thru 32 for selecting the oil sensor's
temperature
trip
value
.
7
.
This completes the
Model 610's oil sensor hardware installa-
tio
n
.
1
)
Referring to
Figure
9
,
Model 610 Exhaust Sensor, Oil
Sensor and Modbus Wiring Diagram,
(page 13) connect the
Model 610's "
MOD
A
", "
MOD
C
" and "
MOD
B
" terminals to the
Modbus RTU connection
.
NOTE:
The Model 610's Modbus terminals are defined as:
MOD
A
=
A = A
TX
+
,
MOD
C
=
G
ND
,
MOD
B
=
TX
-
2)
When using two (2) Model 610 Digital Current Monitors for
the Dual Model 610 Part (Split) Winding Motor installation,
wire
the Modbus RTU connection to
both
sets of
the
#1
and
#2
Model
610
"
MOD
A
", "
MOD
C
" and "
MOD
B
" terminals
.
NOTE:
In this case, the
#1
and
#2
Model 610's Modbus RTU
addresses will be different. Therefore,
both
the
#1
and
#2
Model
610's register data, excluding the Modbus addresses,
must
be
must be must
identical.
3)
This completes the
Model 610's Modbus hardware installa-
tio
n
.
Before turning on power:
1)
Verify (double check) all Model 610 controller(s) and motor
contactor(s) motor (load) wiring.
2)
Disable the motor contactor's ability to activate, by
t
empo-
rarily
removing and protecting the
rarily removing and protecting the rarily
24 VAC motor contactor's coil
wire connected to the
N.C.
terminal on the Model 610's
TRIP
relay or
#1
Model 610's
TRIP
relay if using two (2) Model 610s
.
3
)
Apply 24 VAC power to the controller(s) and line power to
the motor contactor(s). Verify the motor contactor(s) do not ener-
gize the motor. Also verify the LCD screen shows 0.0 amps.
4
)
Turn off both the controller's 24 VAC power
and line power
to the motor contactor(s).
5
)
Reconnect
the
motor contactor(s)'
24 VAC
TRIP
relay wire
(removed in step 2 above)
to the
TRIP
relay's
N.C.
terminal.
6
)
Apply 24 VAC power to the single Model 610 controller or,
when used, both the
#1
and
#2
Model 610 controllers.
7)
Apply line power to the motor contactor(s).
8
)
If the motor being protected has an FLA greater than 10
amps, verify the red
TRIP
LED comes on, within the number of
Exhaust Temperature Sensor
Installation
Initial Checkout Procedure
Oil Temperature Sensor
Installation