. SB262 Series Switch Box Overview: Four to 12 sensor inputs (four to 12 measurement channel outputs), stainless steel slope top enclosure The SB262 Series Switch Box is a common cable termination point for bringing sensor cables into a switch box for routine data collection with portable data collectors .
Mounting Instructions SB262 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 switch box . Mounting Holes 0 .31 in ./7 .95 mm...
Conduit Entry If you are running conduit to your enclosure, ensure the conduit cable entry is located at 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 .
Grounding Ensure the shield ground wire on the SB262 Series Switch Boxes is grounded to earth ground . A. Mounting to Earth Ground When mounting SB262 Series Switch Boxes to earth ground (such as an I-Beam), no additional steps are necessary, as the enclosure is grounded internally .
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 Sensor Installation Installation of Sensors/Signal Input Cable Feed blunt-cut end through the cable entry at the bottom of the switch box .
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Figure 8. Bottom View Figure 7. Front View Strip outer jacket of cable back 1¼ in . and remove all of the shielding . Separate the internal wires from the shield and twist the shield . Strip red and black insulation back ¼ in . Shield / Drain Wire Figure 9.
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Inputs Inputs Optional Optional Remote Remote Output Output Sensor Inputs Red = Positive Black = Common Grey = Shield (Ground) Figure 10. Field Wiring for Two-Conductor Sensor Inputs Insert plug into the appropriate PC board connector and double check to ensure that the cable is going to the correct channel .
Post-Installation Testing The TM1018 Accelerometer Verification Meter can be used to verify cable conductivity, sensor location and proper wiring connections . The Verification Meter will indicate if the sensor, cable and/or junction box is in working condition . It will also confirm bias voltage of the accelerometer, which will inform you of the operation of the internal accelerometer amplifier .
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The following LED Readout indicates the circuit integrity: Green LED: Normal . Indicates proper connection and an output bias will be given, indicating the health of the sensor (4 – 16 V indicates a healthy accelerometer) . Yellow LED: Open Circuit . Indicates one of the following: a .
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Warranty & Refund Warranty All CTC products are backed by our unconditional lifetime warranty . If any CTC product should ever fail, we will repair or replace it at no charge . Refund All stock products can be returned for a 25% restocking fee if returned in new condition within 90 days of shipment .