7-33
7-8 Self-diagnostic Test
The Inverter incorporates a self-diagnostic test function that checks
whether RS-422/485 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.
H
Self-diagnostic Test Steps
1.
Set the Parameter
S
Set n056 for multi-function input 7 (S7) to 35 through the Digital Operator.
2.
Turn OFF the Inverter and Wire the Terminal
S
Turn OFF the Inverter and wire the following control terminals. At this time, make
sure that all other circuit terminals are open.
Set SW1 to NPN.
Connect S7 and SC.
Connect R+ and S+.
Connect R-- and S--.
3.
Turn ON the Inverter and Check the Display
S
Turn ON the Inverter.
S
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.
Communications
Chapter 7
Summary of Contents for SYSDRIVE 3G3MV A2002
Page 1: ...USER S MANUAL SYSDRIVE 3G3MV Multi function Compact Inverter Cat No I527 E2 02...
Page 15: ...Chapter 1 Overview 1 1 Function 1 2 Nomenclature 1 3 New Features 1...
Page 24: ...Chapter 2 Design 2 1 Installation 2 2 Wiring 2...
Page 89: ...Chapter 4 Test Run 4 1 Procedure for Test Run 4 2 Operation Example 4...
Page 286: ...Chapter 9 Specifications 9 1 Inverter Specifications 9 2 Option Specifications 9...
Page 311: ...Chapter 10 List of Parameters 10...
Page 342: ...Chapter 11 Using the Inverter for a Motor 11...
Page 348: ...Appendix A Standard Models...