Rockwell Automation T8471 Trusted TMR 120V dc Digital Output Module - 32 Channel - Manual (Page 15)

Trusted
TM
Module T8471
Issue 14 Apr 10 PD-T8471 15
2. Installation
2.1. Module Insertion/Removal
CAUTION:
The module contains static sensitive parts. static handling precautions must be observed. specifically
ensure that exposed connector pins ARE NOT TOUCHED. Under no circumstances should the
module housing BE REMOVED.
Before installation, visually inspect the module for damage. Ensure that the module housing appears
undamaged and inspect the I/O connector at the back of the module for bent pins. If the module
appears damaged or any pins are bent, do not install the module. Do not try to straighten bent pins.
Return the module for replacement.
Ensure that the module is of the correct type.
Record the module type, revision and serial number of the module before installation.
To install the module:
1. Ensure that the field cable assembly is installed and correctly located.
2. If I/O module keys are used, verify that all keys are installed in the correct positions and
properly seated in their slots.
3. Release the ejector tabs on the module using the release key. Ensure that the ejector tabs
are fully open.
4. Holding the ejectors, carefully insert the module into the intended slot.
5. Push the module fully home by pressing on the top and bottom of the module fascia.
Close the module ejectors, ensuring that they click into their locked position.
The module should mount into the chassis with a minimum of resistance. If the module does not
mount easily, do not force it. Remove the module and check it for bent or damaged pins. If the pins
have not been damaged, try reinstalling the module.
2.2. Cable Selection
The I/O cable suitable for use with the Trusted TM TMR 120V dc Digital Input Module is detailed in the
following Product Description.
1. PD-TC200 – Trusted TM I/O Companion Slot Cables
SmartSlot cables are not available for this product .
The Product Description also details the types of Field Termination Assembly (FTA) or Versatile Field
termination Assembly (VFTA) which may be used with type of module.
Custom length multi-core FTA cables are 0.5mm 2 with a resistance of 40L/km. eg a 50m cable will
have 4L loop impedance at 0.5A, this equates to a 2Vdc volt drop.
2.3. Termination
All channels should be terminated with a parallel 330K 0.25W resistor on the FTA field terminals to
allow no-load detection on de-energised channels. Unused channels may be fitted with 33K 1W
resistors to prevent no-load detection.