4
−
74
Communication signal Disconnect Detect
This signal function is enabled only when ModBus-RTU has been selected for the
communication. If a reception timeout occurs, the inverter continues to output the
communication line disconnection signal until it receives the next data.
Specify the limit time for reception timeout by setting the communication trip time
(
C077
).
Option
Code
Terminal
Symbol
Function Name
State
Description
32
NDc Communication
signal disconnect
detection
ON
When there is a disconnection in communiciation
OFF
When there is no disconnection in communiciation
Valid for inputs:
11, 12, AL0 – AL2
Example for terminal [11] (default output
configuration shown – see
page 3-90
):
Example for terminal [AL0], [AL1], [AL2] (requires
output configuration – see
page 4-52 and 3-90
):
See I/O specs on
page 4-6
Required settings
C077
Notes:
•
The example circuit for terminal [11] drives a relay
coil. Note the use of a diode to prevent the
negative-going turn-off spike generated by the coil
from damaging the inverter’s output transistor.
External control equipment
Communication
trip time
C077
Monitoring timer
Communication line
disconnection signal (NDc)
RY
Inverter output
terminal circuit
CM2
11
NDc
AL1
Power
supply
Load
AL0
AL2
Inverter logic
circuit board
NDc
Summary of Contents for WJ200 Series Software
Page 19: ...xviii Revisions Revision History Table No Revision Comments Date of Issue Operation Manual No ...
Page 295: ...4 92 Safe Stop Function To be finalized after TUV approval ...
Page 296: ...5 1 5 Inverter System Accessories In This Chapter page Introduction 2 Component Description 3 ...
Page 322: ...A 1 A Glossary and Bibliography In This Appendix page Glossary 2 Bibliography 8 ...
Page 378: ...B 49 Note 2 Be sure not to write into above 1F02h to 1F1Dh ...