CTC Union SB142 User manual

SB142 Series Switch BoxSB142 Series Switch Box
4-8 Channel4-8 Channel
Product ManualProduct Manual

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• Introduction...................................................................3
• Product Description...........................................................3
• Product Dimensions & Diagram................................................4
• Mounting Instructions ........................................................5
• Conduit Entry .................................................................6
• Grounding ....................................................................7
• Installation of Sensor/Signal Input Cable.......................................8
• Post Installation Testing ..................................................... 11
• Warranty & Return Information .............................................. 13
T  C

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I
CTC junction box solutions allow for the monitoring of remotely mounted vibration
sensors, which would be otherwise restricted to human access due to safety
considerations.
SB142 Series Switch Box Overview
The SB142 fiberglass switch box is used to convert the three-conductor wiring of
up to 8 remotely installed dual output sensors to two switched BNC connectors
and one output switched two-pin MIL spec connector for portable data collection.
BNC labeled “J1” and the two-pin MIL provide output for vibration and the BNC
labeled “J2” provides output for temperature measurements. Input wiring from
each sensor is connected via quick-connect or screw terminal blocks. Each
terminal block includes input for signal, temperature, common and shield. The
shield drain wire is earth-grounded via a ground stud that is mounted to the
side of the stainless steel enclosure. Optionally, the SB242 can be equipped
with a multi-pin connector for interface with online systems for continuous live
readings. This connection requires a JB905-1A or -2A plug.
A centrally located switch on the enclosure’s panel board determines which
sensor provides output to each BNC and the two-pin MIL connector. A
measurement location card is located on the inside of the enclosure door to
identify each channel.
Rated for NEMA 4X (IP66), the SB242 can withstand harsh environments including
temperatures ranging from -58° to 180°F (-50° to 82°C). The box is also resistant
to hose directed fluid and corrosion. A locking latch is installed on the door
allowing the box to be sealed from the elements when not in use.

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Measurement
Location Card
Two-pin MIL
Output Connector
Switch
Quick
Connect
Option
Screw
Terminal
Option
Optional Online
Expansion Jack
Input Terminal Strip Options
BNC
Output
Connector
Figure 1. Dimensions
Figure 2. Diagram
Side View Rear View

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M I
Attach the enclosed mounting brackets to the switch box at the pre-determined
locations.
Note: If you have purchased a switch box without cable entries provided, you
should add your own entry prior to mounting the enclosure.
Mounting
Holes
0.33 in./8.38 mm
Figure 3. Switch Box Rear View

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If you are running conduit to your enclosure, ensure the conduit cable entry
enters from the bottom of the enclosure when mounted.
Note: To ensure moisture will not flow into the enclosure, a hole should be drilled
at the lowest point in the conduit to provide drainage for any moisture.
Correct
Figure 4. Conduit Entry for Switch Box
Incorrect
Drill Drain
Hole Here

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Ensure the shield ground wire on the SB142 Series Switch Boxes is grounded to
earth ground.
A. Mounting to Earth Ground
When mounting SB142 Series Switch boxes to earth ground (such as an I-Beam),
mount the shield ground wire using a mounting bolt through one of the mounting
brackets on the enclosure. See Figure 5 below.
Figure 5. Switch Box (SB102) Ground Lug

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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
S I
Installation of sensors/signal input cable
1. Feed blunt 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
into enclosure, hand tighten cord grip cover to base to prevent damage of cord
grip.

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1. Strip outer jacket of cable back 1¼ in. - 1½ in. and remove all of the shielding.
2. Strip red and black insulation back ¼ in.
3. Remove each terminal plug from respective channel.
Figure 8. Bottom View
Figure 7. Front View
Figure 9. Stripped Wire
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.
(-)
Shield / Drain wire
(+)
(+)

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5. Insert plug into the appropriate PC board connector and double check to ensure
that the cable is going to the correct channel.
6. Mark the Measurement Location Card located on the inside front cover with a
description of each measurement location.
Figure 10. Field Wiring for 3-Conductor Sensor Inputs
CH1
A
B
C
GND 1A
1B
1C
2A
2B
2C
3A
3B
3C
4A
4B
4C
5A
5B
5C
6A
6B
6C
7A
7B
7C
8A
8B
8C
Optional
Remote
Output
Optional
Remote
Output
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
CH1CH1CH1
CH1CH1CH1CH1
Inputs Inputs
Note: CTC recommends using 4 conductor cables such as CB105,
CB117, CB119, CB192, CB218, CB618, CB818, or CB819 for
biaxial applications. If using a 3 conductor cable such as CB112,
CB191, CB212, CB512, CB612, or CB812 substitue the red wire for
green.
Table 1. Wiring Instructions for Various Applications
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
TWO SINGLE AXIS VIBRATION ACCELEROMETERS
SOCKET A RED WIRE SENSOR 1 (+)
SOCKET B BLACK WIRE COMMON
SOCKET C RED WIRE SENSOR 2 (+)
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
DUAL OUTPUT - VIBRATION & TEMPERATURE
SOCKET A RED WIRE VIBRATION (+)
SOCKET B BLACK WIRE COMMON
SOCKET C WHITE WIRE TEMPERATURE (+)
SOCKET GND SHIELD DRAIN SHIELD