Junction Box Installation Manual - Squarespace · PDF filePart # BWJCT Junction Box...
Transcript of Junction Box Installation Manual - Squarespace · PDF filePart # BWJCT Junction Box...
Part # BWJCT Junction Box Installation Manual
2016 JUNCTION BOX INSTALLATION MANUAL
Junction Box Installation Manual
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Table of Contents
1. Introduction .......................................................................................................................................... 2
2. What is in the Box? ............................................................................................................................ 3
3. Tools Needed ...................................................................................................................................... 3
4. Installation Procedure ........................................................................................................................ 4
5. Connect Integrator Power ................................................................................................................. 8
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1. Introduction
A junction box is required when the integrator (primary scale controller) must be mounted
greater than 30 ft. from the scale components.
We strongly recommend wireless communications to a remote display whenever possible to
alleviate the long term maintenance issues associated with junction boxes and long cable
installations.
If it is not feasible to use wireless equipment, then our new digital junction box will offer the
best option to remotely monitor a single scale. The new Digital Junction box converts sensitive
analog signals (load cell, speed sensor, angle sensor) to a digital format.
All scale information can be transmitted over one 3 pair cable (6 wires). It is critical that you
follow all Company and government SAFETY procedures when installing this component in the
field. After reading this manual you require any assistance with the installation, wiring, and
setup of the junction box please contact our technical support department.
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2. What is in the Box?
Leave a minimum of 3" clearance on the left side to allow the door to open.
The mounting kit includes 4 feet and 4 - 2.36" (60mm) screws and nuts.
3.Tools Needed
The following basic tools will be needed: 1. 1 QTY – Phillips / Star Head Screw
Driver 2. 1 QTY - Small Flat Head Screw Driver 3. Wire Strippers 4. Lock-Out Tag
The following items are included: 1. 1 - Junction box 2. 4 - Mounting Feet and Screws 3. 3 pair extension cable
(if ordered with the Junction Box)
6.48 in
8.01 in
11.15 in 11.97 in
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4. Installation Procedure
Disconnect power to the integrator at the breaker or disconnect panel. Lock out the supply power while mounting the junction box and working inside the integrator.
STEP 1 Label and Mount Junction Box
Label the junction box on the provided spaces to specify the type and capacity of the scale. Mount the junction box in a secure location within 30 feet of the scale components. Make sure the cables are long enough to easily reach the junction box location. . Route the component cables so they are away from sources of high voltage. Be sure they are protected from falling material and the moving belt. Excess cable may be trimmed.
Step 2 Connect Component Cables to Junction Box Sensor Board
The shield wires on all components must be connected as shown below. Failure to do so will make the scale extremely susceptible to electrical interference.
Installing the shield wire as shown will ground it to the box and reduce interference from electrical noise. When installing 3 or more load cells you will need to strip the wiring back to get additional length and keep the shield wire out of the Integrator.
1. The complete cable needs to be fed through the
grommet hole. 2. The shield then needs to be wrapped backwards
over the grommet and fed through the cord grip nut. 3. Insert the cable through the hole in the integrator enclosure so that the cord grip presses the shield against the housing as the nut is tightened.
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Scale Component Wiring Terminals There are currently two generations of junction box sensor boards.
They function the same but have different style connectors.
Revision 3 Sensor Board Revision 4 Sensor Board
All Load Cells
- SUP - Black
+SUP - Red
- SIG - White
+SIG - Green
Speed Sensor
SIGB - Not Used
SIGA - Green
+5V - Red
GND - Black & White
GND - Not Used
SIGC - Not Used
Angle Sensor
SIG - Green
GND - White
+5V - Red
GND - Black
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STEP 3 Connect RS485 Cable to Junction Box and Integrator Control Box
DO NOT ROUTE THE CABLE NEAR SOURCES OF HIGH VOLTAGE! GROUND THE SHIELD WIRE ON BOTH ENDS OF THE COMMUNICATION CABLE!
SEE PAGE 4 FOR GROUNDING INSTRUCTIONS!
NOTE: Rev 3 Sensor Boards are compatible with Rev 3 Terminal Boards and
Rev 4 Sensor Boards are compatible with Rev 2 Terminal Boards
Disconnect the small ribbon cables labeled SENSOR POWER and SEN RS485 INTERFACE!
They are under the large ribbon cable at board locations P4 & P4_A. The scale will not function
properly with these cables and the junction box connected at the same time!
Junction Box Sensor Board
Revision 3
Integrator Terminal Board
Revision 2
Junction Box Sensor Board
Revision 4
Integrator Terminal Board
Revision 3
RS485 3 Pair Cable
RS485 3 Pair Cable
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Junction Box Sensor Board Integrator Terminal Board
+VIN = SNSR PWR
GND = GND
RX- = TX-
RX+ = TX+
TX- = RX-
TX+ = RX+
This wiring diagram assumes a shielded 3 pair (6 wire) cable is used.
Junction Box Sensor Board RS485 Connector:
Integrator Terminal Board RS485 Connector:
24 VDC Power Output
SNSR PWR - White
GND - Black (White & Black pair)
RS485
TX+ Green
TX - Black (Green & Black pair)
RX+ Red
RX - Black (Red & Black pair)
IMPORTANT - Connect the shield
wire to the cord connector as
shown on the next page.
24 VDC Power input
+VIN - White
GND - Black (White & Black pair)
RS485
RX- Black (Green & Black pair)
RX+ Green
TX- Black (Red & Black pair)
TX+ Red
IMPORTANT - Connect the shield
wire to the cord connector as shown
on the next page.
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5. Connect Integrator Power
OR
OR
Make sure the green LED's on the junction box sensor board are illuminated to
show it is powered up.
Return to the integrator and proceed with the calibration as described in the belt
scale manual.
Contact Belt-Way technical support with further questions.