Rockwell Automation MSR04XI Serial Communications Module RS232 - Manual (Page 11)

MSR04XI October 2005 – Issue 8 11
Triguard SC300E MSR04XI Serial Communications Module RS232
SERVICING
SCOPE
CAUTION: 1
The module contains components that may be electrostatically sensitive, it should be
transported and stored in its original packaging material.
System repair is by module replacement. Faulty modules are not repairable in the field; they
should be returned for repair.
DIAGNOSIS
The TriBuild workstation is used for fault diagnosis. In the case of an Input/Output fault the
Health LED on the faulty module will be extinguished.
REMOVAL AND REPLACEMENT
CAUTION 2
Failure to take the faulty module off-line before removing it from the chassis could trigger a fault
alarm or cause plant shutdown.
CAUTION 3
When inserting a module ensure that it is aligned with the markings on the chassis rails and
that it engages with the upper and lower guides. Improper insertion may cause damage to the
module and/or chassis connectors.
Operate the On/off Line Request switch on the faulty module, the three On Line LEDs should
all extinguish to indicate that the MPPs have recognised the request and taken the module off-
line.
Slacken the two module securing screws and use the black ejection levers (top and bottom) to
draw the module from its slot.
Insert the new module ensuring that it engages properly in the upper and lower guides in the
chassis, the top and bottom chassis rails carry alignment marks to assist. Pull out the
ejection levers and as the module is pushed back engage the levers on the chassis rails. The
levers should then be used to draw the module into position, some resistance will be felt as the
rear connector pins engage. The module should be fixed in position with the securing screws.