CTC Union JB330 Series User manual

JB330 Series Switch BoxJB330 Series Switch Box

12 Triaxial Inputs12 Triaxial Inputs

Product ManualProduct Manual

• 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

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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.

JB330 Series Switch Box Overview: Four to 12 triaxial sensor inputs (12 to 36

measurement channel outputs), stainless steel slope top enclosure

The JB330 Switch Box is a common cable termination point for bringing

compatible cables for triaxial 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 JB330 is resistant to hose-directed fluid

and corrosion. The box can also withstand harsh environments, including

temperatures ranging from -58°F to 180°F (-50°C 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 JB933-1A.

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Measurement

Location Card

Data Collector

Access (BNC)

Switch

Quick

Connect

Option

Screw

Terminal

Option

Data Collector

Access (4 pin)

Input Terminal Strip Options

Bias

Indicator

Light

Figure 1. Dimensions

Figure 2. Diagram

Front View Side View

M I

Note: If you have purchased a switch box without cable entries provided, you

should add your own entry prior to mounting the modular switch box. CTC does

not recommend drilling holes in the top of the enclosure due to access and

moisture concerns.

Mounting

Holes

0.31 in./7.95 mm

Figure 3. Sloped Top 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

Drill Drain

Hole Here

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Ensure the shield ground wire on the JB330 Series Switch Box is grounded to

earth ground.

A. Mounting to Earth Ground

When mounting JB330 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 (JB330) 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, green, white, and black insulation back ¼ in.

Figure 8. Bottom View with

Cord Grips Installed

Figure 7. Front View

Figure 9. Stripped Wire

(-)

Shield / Drain Wire

(+) Channel Y

(+) Channel X

(+) Channel Z

Figure 10. Field Wiring for Four-Conductor Triaxial Sensor Inputs

GND

SENSOR #1 SENSOR #2

GND

SENSOR #3

GND

SENSOR #4

GND

SENSOR #5

GND

SENSOR #6

GND

SENSOR #7

GND

SENSOR #8

GND

SENSOR #9 SENSOR #10

GND

SENSOR #11

GND

SENSOR #12

GND

Sensor Inputs

Green = Positive X Axis

Red = Positive Y Axis

White = Positive Z Axis

Black = Common

Grey = Shield (Ground)

Inputs

S I

4. Locate the appropriate plug (identified by channel number), remove it, and

install the wires using a small flathead screwdriver. Push plug back into location.

Orientation is as follows:

a. Green insulated conductor wire is connected to Channel X.

b. Red insulated conductor wire is connected to Channel Y.

c. White insulated conductor wire is connected to Channel Z.

d. Black insulated conductor wire is connected to (-).

e. Shield drain wire is connected to ground (GND).

GND

SENSOR #1 SENSOR #2

GND

SENSOR #3

GND

SENSOR #4

GND

SENSOR #5

GND

SENSOR #6

GND

SENSOR #7

GND

SENSOR #8

GND

SENSOR #9 SENSOR #10

GND

SENSOR #11

GND

SENSOR #12

GND

Sensor Inputs

Green = Positive X Axis

Red = Positive Y Axis

White = Positive Z Axis

Black = Common

Grey = Shield (Ground)

Inputs

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