CTC Union JB320 Series User manual

JB320 Series Switch BoxJB320 Series Switch Box
4-12 Channel4-12 Channel
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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I
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.
JB320 Series Switch Box Overview: 4-12 channel boxes, stainless steel
enclosure
The JB320 Dual Output Switch Box is a common cable termination point for
bringing a variety of sensors including Biaxial, LP400, Dual Output Vib/Temp 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 JB320 is resistant to hose directed fluid
and corrosion. The box can also withstand harsh environments, including
temperatures ranging from -58 to 180 °F (-50 to 82 °C). A key 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
Front View Side View
Data Collector
Access (BNC)
Ch. A

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M I
Molded mounting brackets are included on the enclosure. Wall anchoring screws
are not included.
CTC
Vibration
Switch Box
(Rear View)
Mounting
Brackets
0.31 in./7.95 mm
Figure 3. Mounting Bracket Placement

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If you have purchased a enclosure without cable entries provided, you should
add your own entry prior to mounting the switch box. CTC does not recommend
putting holes in the top of enclosure 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
Drill Drain
Hole Here

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Ensure the shield ground wire on JB320 Series Switch Boxes is grounded to
earth ground.
A. Mounting to Earth Ground
When mounting JB320 Series Switch boxes to earth ground (such as an I-Beam),
no additional steps are necessary, as the enclosure is grounded internally.
Figure 5. Switch Box (JB320) Earth Ground

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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 3-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
S I
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
DIMENSIONS
N
SIDE SHEET
DUAL OUTPUT - VIB/TEMP
SOCKET A RED WIRE VIB (+)
SOCKET B BLACK WIRE COMMON
SOCKET C WHITE WIRE TEMP (+)
SOCKET GND SHIELD DRAIN SHIELD
BIAXIAL - AXIS X AND 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
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 VIB
SOCKET A WHITE WIRE VIB (+)
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.