Cooling Fan Life Warning Signal (Waf); Communication Disconnection Detection Signal (Ndc) - Omron MX2 Series User Manual

7-8-14 Cooling Fan Life Warning Signal (WAF)

In the Ambient Temperature (b075), set the ambient temperature in the operating environment of the
inverter. This signal, when allocated, enables the inverter to estimate the expectancy of the cooling fan
and output this warning signal when replacement is necessary.
This warning is made on the assumption that the life expectancy of the cooling fan is approximately 10
years under an ambient temperature of 40°C or lower.
If this signal is output, it is recommended to check the cooling fan for clogging etc. or replace it.
The status of this signal can be monitored in the Life Assessment Monitor (d022).
Parameter
No.
b075 Ambient Temperature
C021, C022 Multi-function Output P1/P2 Selection 40:
Multi-function Relay Output (MA, MB)
C026
Function Selection
Related functions

7-8-15 Communication Disconnection Detection Signal (NDc)

This signal is enabled only when Modbus communication is selected for RS485 communications.
If a reception timeout error occurs, this signal will be output until the next data is received.
Set the time until the reception timeout in the Communication Error Timeout Time (C077).
For details, refer to Section 8 Communications Functions.
External controller
Inverter
Monitor timer
Communications
error (NDc) output
Parameter
No.
C077 Communication Error Timeout Time
C021, C022 Multi-function Output P1/P2 Selection 32:
Multi-function Relay Output (MA, MB)
C026
Function Selection
Multi-function Compact Inverter 3G3MX2-V1 User's Manual (I585-E1)
Function name
Function name
Data
−10 to 50
Set the ambient temperature in
the operating environment.
WAF (Cooling fan life warn-
ing signal)
b092, d022
Communication
Error Timeout Time
(C077)
Data
0.00: Timeout disabled
0.01 to 99.99
Set the reception timeout time.
NDc (Communications
disconnection detection)
7 Other Functions
Default
Unit
data
40 °C
− −
Default
Unit
data
0.00 s
− −
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