CTC Union JB120 Series User manual

JB120 Series Switch BoxJB120 Series Switch Box
12 Dual Output Sensor Inputs12 Dual Output Sensor Inputs
Product ManualProduct Manual

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• Introduction...................................................................3
• Product Description...........................................................3
• Product Dimensions...........................................................4
• Mounting Instructions .........................................................5
• Conduit Entry .................................................................6
• Grounding ....................................................................7
• Sensor Installation ............................................................9
• Post-Installation Testing..................................................... 12
• Maintenance ................................................................ 13
• Warranty & Refund .......................................................... 14
T  C

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CTC switch box solutions allow for the monitoring of remotely-mounted vibration
sensors, which would otherwise be restricted to human access due to safety
considerations.
JB120 Series Switch Box Overview:Four to 12 sensor inputs (eight to 24
measurement channel outputs), fiberglass enclosure
The JB120 Dual Output Switch Boxes are common cable termination points for
bringing a variety of sensors including Biaxial, Dual Output Vibration/Temperature
and Two Single Axis sensors into a switch box for routine data collection with
portable data collectors. JB series enclosures are designed to have field-input
cabling installed behind the board. A flip-down panel allows the user to wire
connections on location. The JB series also features an IEPE bias indicator light
built into the box itself, which can be used to indicate errors in the field wiring or
the sensor.
Rated for NEMA 4X (IP66), the JB120 is resistant to hose-directed fluid and
corrosion.Theboxcanalsowithstandharshenvironments,includingtemperatures
ranging from -58°F to 180°F (-50°C to 82°C). A snap latch is installed on the door,
allowing the box to be sealed from the elements when not in use.
If a continuous output application is desired, that can be easily accomplished by
purchasing the optional CTC accessory “T” plug, part number JB931-3A.

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Measurement
Location Card
Data Collector
Access (BNC)
Ch. B
Switch
Quick
Connect
Option
Screw
Terminal
Option
Data Collector
Access (3 pin)
Input Terminal Strip Options
Bias
Indicator
Light
Figure 1. Dimensions
Figure 2. Diagram
Side View Rear View
Data Collector
Access (BNC)
Ch. A

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Molded mounting brackets are included on the enclosure. Wall anchoring screws
are not included.
Mounting
Holes
0.33 in./8.38 mm
Figure 3. Vibration Switch Box Rear View

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If you have purchased a switch box without cable entries provided, you should
add your own entry prior to mounting the enclosure. CTC does not recommend
putting holes in the top of enclosures as it will cause restricted access to the
wire termination connection points and also allow possible moisture ingress.
Note: To prevent a buildup of condensation inside the enclosure, provide drainage
by drilling a hole in the lowest point of the conduit.
Correct
Figure 4. Conduit Entry for Switch Box
Incorrect
Drill Drain
Hole Here

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Ensure the shield ground wire on JB120 Series Switch Boxes is grounded to
earth ground.
A. Mounting to Earth Ground
When mounting JB120 Series Switch boxes to earth ground (such as an I-Beam),
mount the shield ground wireusing a mounting bolt through one of the mounting
brackets on the enclosure. See Figure 5 below.
Figure 5. Proper Shield Grounding Technique

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B. Mounting to Non-Grounded Structure
When mounting the switch box to a non-grounded structure, ensure the shield
ground wire or customer-supplied ground wire is tied to a source of earth ground.
Figure 6. Ground Wire Placement

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Installation of Sensors/Signal Input Cable
1. Feed blunt-cut end through the cable entry at the bottom of the enclosure.
Note: it is recommended that cables are marked on both ends.
For cord grip cable entry, take off the cord grip cover with bushing and run
cable through it then into the enclosure. Hand-tighten cord grip cover to base to
prevent damage of cord grip.
1. Strip outer jacket of cable back 1¼ in. and remove all of the shielding.
2. Separate the internal wires from the shield.
3. Strip red, black, and white insulation back ¼ in.
Figure 8. Bottom View with
Cord Grips Installed
Figure 7. Front View
Figure 9. Stripped Wire
(-)
Shield / Drain Wire
(+)
(+)

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Figure 10. Field Wiring for Three-Conductor Sensor Inputs
A B
C
GND
SENSOR #1 SENSOR #2
A B
C
GND
SENSOR #3
A B
C
GND
SENSOR #4
A B
C
GND
SENSOR #5
A B
C
GND
SENSOR #6
A B
C
GND
SENSOR #7
A
B
C
GND
SENSOR #8
A B
C
GND
SENSOR #9
A
B
C
GND
SENSOR #10
A
B
C
GND
SENSOR #11
A
B
C
GND
SENSOR #12
A
B
C
GND
Inputs
Inputs
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4. Locate the appropriate plug (identified by channel number), remove it, and install
the wires using a small flathead screwdriver. Depress selected position button
to open terminal for respective wire. Push plug back into location. Refer to the
below chart for the correct orientation, based on application.
Inputs
N
SIONS
SHEET
DUAL OUTPUT - VIBRATION & TEMPERATURE
SOCKET A RED WIRE VIBRATION (+)
SOCKET B BLACK WIRE COMMON
SOCKET C WHITE WIRE TEMPERATURE (+)
SOCKET GND SHIELD DRAIN SHIELD
BIAXIAL VIBRATION - AXIS X & Z
SOCKET A GREEN WIRE AXIS X (+)
SOCKET B BLACK WIRE COMMON
SOCKET C WHITE WIRE AXIS Z (+)
SOCKET GND SHIELD DRAIN SHIELD
TWO SINGLE AXIS VIBRATION
SOCKET A RED WIRE SENSOR 1 (+)
SOCKET B BLACK WIRE COMMON
SOCKET C RED WIRE SENSOR 2 (+)
SOCKET GND SHIELD DRAIN SHIELD
LP400 SERIES DYNAMIC & 4-20 mA VIBRATION
SOCKET A WHITE WIRE VIBRATION (+)
SOCKET B BLACK WIRE COMMON
SOCKET C RED WIRE 4-20 mA (+)
SOCKET GND SHIELD DRAIN SHIELD
NOTE: THIS APPLICATION REQUIRES "T" PLUGS
5. Insert plug into the appropriate PC board connector and double check to ensure
that the cable is going to the correct channel.