7 MAINTENANCE
- 41 -
7.2.2 Preliminary checks to be completed before troubleshooting
Is the communication cable terminated normally?
• Always terminate both ends of the communication cable with terminating resistors (120
ohms each). (For the IR.Station module, connect TERM and COM terminals to
terminate with a 120-ohm built-in resistance.
Is the wiring OK?
• Check whether the cables are connected correctly and firmly.
Is the IR.Station module mounted correctly?
• Check whether the IR.Station module is mounted correctly and mounting screws are
tightened firmly.
Is the terminal block fit for the module?
• Use a 18-point terminal block fit for the IR.Station module.
Is the module grounded correctly?
• Ground the module away from the grounding point of high power units.
• Use the grounding of Class D or higher.
Are the LG and FG terminals grounded separately?
• Be sure to ground the LG and FG terminals separately to prevent malfunction due to
power noises to the FG via the LG.
• Ground the LG terminal at the power supply side.
Summary of Contents for IR.Station
Page 1: ......
Page 11: ...1 BEFORE USE ...
Page 17: ...2 GENERAL INFORMATION ...
Page 20: ...THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 21: ...3 NAMES AND FUNCTIONS OF EACH PART ...
Page 28: ...THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 29: ...4 INSTALLATION ...
Page 35: ...5 CABLING ...
Page 42: ...THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 43: ...6 SETTING ...
Page 46: ...THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 47: ...7 MAINTENANCE ...
Page 53: ...8 SPECIFICATIONS ...