AB AENT 1734 Module Problem

G

Thread Starter

Ghate Vinod

We have AB Make PLC System for our Boiler Compact Logix CPU. It has a AENT1734 Module. After one Yr. of Installation of this system we are facing Problem in above mentioned Module. It's last red Indication Starts Blinking CPU remain in healthy condition. But due to no communication Between I/O cards & CPU, Operator Station gets Hanged Up. i.e. Operator can not perform any operations. We Reset the Power supply of the system, wait for few mins & then restart the system. Boiler gets shutdown for this period (Production Loss). Initially we found that Its temperature was rising high. We provided External cooling Fan for It. the frequency of this fault reduces from 10 Hrs to 1 month, but still this card some time goes in Fault mode & trips the plant.

Pl. help us in understanding & solving this problem. As mentioned temperature rise was one of the problem & we avoided the same. Temperature Now is Normal & is @ 25 °C.

Waiting for your Kind Reply
 
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Hello Bob;
Yet we have not tried to replace the same. We will try it. but some another possibilities may be ?? -- heat transferred from I/O modules to 1734
Dust inside this Module, Firmware Glitch,
Excess Current drawn by the modules? can any one of above may be the reason. Following is our Hardware distribution<pre>
1 1769-L23E-QB1B "CompactLogix L2x Controller, 1 serial port, 1 EtherNet/IP port,
512KB memory, 16 DC in, 16 DC out,up to 3 1769 I/O expansion
modules or 1769 Communication modules" 1
2 1734-AENT 1734 EtherNet/IP Adapter 1
3 1734-IB8 24V DC 8-Point Sink Input Module 5
4 1734-OB8 24V DC 8-Point Source Output Module 1
5 1734-IE8C 8-Channel High-Density Analog Current Input Module 7
6 1734-OE4C 4-Point Analog Current Output Module 5
7 1734-EP24DC 24V DC Expansion Power Module 1
8 1734-TBS "MODULE BASE W/ REMOVABLE IEC SCREW TERMINALS
(PRICED PER PIECE, SOLD IN LOTS OF 10)" 20
9 ------ 10" PANEL VIEW HMI 1
10 1783-US08T Stratix 2000 Switch, Unmanaged, 8 Copper Ports 1</pre>
 
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