116
Self-diagnostic Test
Chapter 7-9
7-9
Self-diagnostic Test
The Inverter incorporates a self-diagnostic test function that checks whether
RS-422A/485 communications are functioning. If the Inverter has a
communications failure, take the steps provided below to check whether the
communications function of the Inverter is normal.
Self-diagnostic Test Steps
1.
Set the Parameter
Set n39 for multi-function input 4 (S5) to 35 through the Digital Operator.
2.
Turn OFF the Inverter and Wire the Terminal
Turn OFF the Inverter and wire the following control terminals. At this time,
make sure that all other circuit terminals are open.
3.
Turn ON the Inverter and Check the Display
Turn ON the Inverter.
Check the display on the Digital Operator.
Normal
The display is normal with no error code displayed.
Fault
The display shows “CE” (communications time-over) or “CAL”
(communications standby). In either case, the communications circuit
of the Inverter is broken. Replace the Inverter.
Set SW7 to NPN.
Connect S5 and SC.
Connect R+ and S+.
Connect R± and S±.
Summary of Contents for J7 series
Page 12: ...XII...
Page 15: ...1 CHAPTER 1 Overview 1 1 Function 2 1 2 Nomenclature 3...
Page 54: ...40 Outline of Operation Chapter 3 2...
Page 102: ...88 Other Functions Chapter 6 7...
Page 158: ...144 Option Specifications Chapter 9 3...
Page 159: ...145 CHAPTER 10 List of Parameters List of Parameters 146...
Page 172: ...158 List of Parameters Chapter 10...
Page 173: ...159 CHAPTER 11 Using the Inverter for a Motor Using the Inverter for a Motor 160...