CTC Union SB282 Series User manual

SB282 SeriesSB282 Series
Dual Output Switch BoxDual Output 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 ..................................................... 13
• Warranty & Return Information .............................................. 15
T  C

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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.
SB282 Series Switch Box Overview
The SB282 stainless steel slope top 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 SB282
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 SB282 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
Front View Side View

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M I
SB282 Series Switch Boxes are supplied with integral mounting brackets
attached.
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
0.31 in./7.95 mm
Figure 3. Mounting Bracket Placement

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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
Drill Drain
Hole Here

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Ensure that the SB282 Series Switch Box is grounded to earth ground.
A. Mounting to Earth Ground
When mounting SB282 Series Switch boxes to earth ground (such as an I-Beam),
no additional steps are necessary, as the enclosure is grounded internally to the
stainless steel enclosure. See Figure 5 below.
Figure 5. Switch Box (SB282) 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
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 9. Stripped Wire
(-)
Shield / Drain 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.
Figure 8. Bottom View
Figure 7. Front View

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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
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.
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