CTC Union SB152 Series User manual

SB152 Series Switch BoxSB152 Series Switch Box

6-12 Channel6-12 Channel

Product ManualProduct Manual

• 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

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.

SB152 Series Switch Box Overview: 6-12 channel boxes, fiberglass enclosure

The SB152 Switch Box is a common cable termination point for bringing sensor

cables into a switch box for routine data collection with portable data collectors.

The SB152 6-12 Channel Fiberglass switch box is used to convert the two-

conductor input wiring of up to 12 remotely installed accelerometers or piezo

velocity sensors, and/or temperature probes to a switched BNC and a switched

two-pin MIL spec connector for data collection. Input wiring from each sensor

is connected to the outputs via quick-connect or screw terminal blocks. Each

terminal block includes inputs for positive, negative and shield. The shield drain

wire is earth grounded via a ground stud that is mounted to the side of the

fiberglass enclosure.

Rated for NEMA 4X (IP66), the SB152 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 snap latch is installed on the door allowing

the box to be sealed from the elements when not in use.

P D

Measurement

Location Card

Two-pin MIL

Output Connector

Switch

Quick

Connect

Option

Screw

Terminal

Option

Input Terminal Strip Options

BNC

Output

Connector

Figure 1. Dimensions

Figure 2. Diagram

Side View Rear View

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Note: if you have purchased a switch box 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 the enclosure due to access and moisture

concerns.

Mounting

Holes

0.33 in./7.95 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 SB152 Series Switch Boxes is grounded to

earth ground.

A. Mounting to Earth Ground

When mounting SB152 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.

Figure 5. Proper Shield Grounding Technique

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 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.

1. Strip outer jacket of cable back 1¼ in. and remove all of the shielding.

2. Separate the internal wires from the shield and twist the shield.

3. Strip red and black insulation back ¼ in.

Figure 8. Bottom View

Figure 7. Front View

Figure 9. Stripped Wire

(-)

Shield / Drain wire

(+)

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

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

Orientation is as follows:

a. Red insulated conductor wire is connected to (+).

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

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

d. Depress selected position button to open terminal for respective wire (may

require a mini at head screwdriver).

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. Connecting Cables to Switch Box

CH1CH2CH3CH4CH5CH6

CH7CH8CH9CH10CH11CH12

GND

SENSOR #1

SENSOR #2

SENSOR #3

SENSOR #4

SENSOR #5SENSOR #6

SENSOR #7

SENSOR #8

SENSOR #9

SENSOR #10

SENSOR #11

SENSOR #12

Sensor Inputs

Red = Positive

Black = Common

Grey = Shield (Ground)

CH1CH2CH3CH4CH5CH6

CH7CH8CH9CH10CH11CH12

GND

SENSOR #1

SENSOR #2

SENSOR #3

SENSOR #4

SENSOR #5SENSOR #6

SENSOR #7

SENSOR #8

SENSOR #9

SENSOR #10

SENSOR #11

SENSOR #12

Sensor Inputs

Red = Positive

Black = Common

Grey = Shield (Ground)

Inputs Inputs

Table of contents

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