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Barrel Temperature Control Module           

7

Publication 1746-IN020B-EN-P - July 2002

Remove/Install the Removable Terminal Block

The module ships with an attached an 18-position removable terminal block (RTB). When 
you install the module, it is not necessary to remove the RTB. If you ever need to remove it, 
follow this procedure:

1.

Alternately loosen the two retaining screws to avoid cracking the RTB.

2.

Grasp the RTB at the top and bottom and pull outward and down. When removing 
the RTB, be careful not to damage the CJC sensors.

3.

Use the write–on label to identify the slot, chassis and module type.

To install the RTB:

1.

Remove power from the SLC 500 chassis.

WARNING

!

When you connect or disconnect the Removable Terminal Block 
(RTB) with field side power applied, an electrical arc can occur. This 
could cause an explosion in hazardous location installations. Be sure 
that power is removed or the area is nonhazardous before proceeding.

CJC sensors

retaining screws

RTB

SLOT

RACK

MODULE

Summary of Contents for 1746-BTM

Page 1: ...re the 1746 BTM barrel temperature control module For this information See page Important User Information 2 Prevent Electrostatic Discharge 3 How to Get the Related User Manual 4 Determine the Module...

Page 2: ...publication SGI 1 1 Safety Guidelines for the Application Installation and Maintenance of Solid State Control available from your local Rockwell Automation office describes some important differences...

Page 3: ...e enclosure must be accessible only by the use of a tool Subsequent sections of this publication may contain additional information regarding specific enclosure type ratings that are required to compl...

Page 4: ...ple type applications require an industrial enclosure to reduce the effects of electrical interference Thermocouple inputs are highly susceptible to electrical noises due to the small signal amplitude...

Page 5: ...dule into the chassis until both top and bottom retaining clips are secured Apply firm even pressure on the module to attach it to its backplane connector Never force the module into the slot 4 Cover...

Page 6: ...re Control Module Publication 1746 IN020B EN P July 2002 5 To remove press the releases at the top and bottom of the module and slide the module out of the chassis slot card guides topandbottom releas...

Page 7: ...RTB 2 Grasp the RTB at the top and bottom and pull outward and down When removing the RTB be careful not to damage the CJC sensors 3 Use the write on label to identify the slot chassis and module typ...

Page 8: ...he RTB retaining screws with the mating connector on the module Be careful not to damage the CJC sensors 5 Press the RTB firmly onto the connector contacts 6 Alternately tighten the two retaining scre...

Page 9: ...JC A or CJC B as shown below ATTENTION Do not remove or loosen the cold junction compensating thermistors located on the terminal block Both thermistors are critical to ensure accurate thermocouple in...

Page 10: ...or contact your sensor manufacturer for additional details When trimming cable leads minimize the length of unshielded wires Ground the shield drain wire at only one end of the cable The preferred lo...

Page 11: ...the wires 3 At the module end of the cables extract the drain wire and signal wires remove the foil shield bundle the input cables with a cable strap 4 Connect drain wires together and solder them to...

Page 12: ...ng the leads short IMPORTANT If noise persists try grounding the opposite end of the cable Ground one end only Wires 3 8 Make unshielded wires as short as possible Limit braid length to 12 or less Sol...

Page 13: ...code de temp rature le plus faible peut tre utilis pour d terminer le code de temp rature global du syst me Les combinaisons d quipements dans le syst me sont sujettes inspection par les autorit s loc...

Page 14: ...IEC 60068 2 2 Test Bc Un packaged Non operating Dry Heat IEC 60068 2 14 Test Na Un packaged Non operating Thermal Shock 40 to 85o C 40 to 185o F Relative Humidity IEC 60068 2 30 Test Db Un packaged No...

Page 15: ...Barrel Temperature Control Module 15 Publication 1746 IN020B EN P July 2002 Notes...

Page 16: ...urs of installation please review the information that s contained in this manual You can also contact a special Customer Support number for initial help in getting your product up and running New Pro...

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