No Communication With The Frequency Converter - Danfoss VLT BACnet/IP MCA 125 Installation Manual

Troubleshooting
State
Power up
Running
4 4
Table 4.3 NS1+NS2: Network Status (1 per Port)
4.2.2 No Communication with the
Frequency Converter
Check: Link status
The status of the Ethernet link can be directly identified
using the LEDs, when no BACnet connection is established.
Use parameter 12-10 Link Status to verify presence of the
link.
Use parameter 12-11 Link Duration to verify that the link is
steadily present.
The parameter shows the duration of the present link, and
is preset to 00:00:00:00 when the link is broken.
Check: Cabling
In rare cases of cabling misconfiguration, the option may
show the presence of a link but no communication is
running. Exchange the cable if in doubt.
Check: IP address
Verify that the option has a valid IP address (refer to
parameter 12-01 IP Address). When the option has identified
a duplicate IP Address, NS LEDs are steady red. When the
option is set up for BOOTP or DHCP, verify that a BOOTP or
DHCP Server is connected in parameter 12-04 DHCP Server.
If no server is connected, the parameter shows:
000.000.000.000.
14
®
VLT BACnet/IP MCA 125
LED
Red/
green:
Green:
Green:
Red:
Off
Danfoss A/S © 05/2016 All rights reserved.
Description
Solid red/green The device is powering up (after MS LED).
Flashing green No IP address is configured.
Solid green The link is active and the IP address is configured.
Solid red The IP address assigned to the device is already in
use.
There is no link or the link has been removed after
Off
valid IP address has been entered.
MG92K102