I have a 1756-PLS triple-slot Controllogix resolver I/O module. I can read the resolver position as I turn it by hand and I can make the module output come on within my specified rotation limits. But the ouput only comes on when the resolver is at rest. When I start turning the resolver the output goes off. I am running a sample program that came with RSLogix 5000. Any ideas what might be the problem? Thanks.
Problem: 1756-PLS output on only while resolver is stopped.
- Thread starter colemanj
- Start date
Found my problem
Thanks for the response. Actually I found my problem. The RpmEnableLowLimit and RpmEnableHighLimit were set to zero. This meant the output was only active when the resolver was at rest. I set these limits to -32768 and 32767 and now it works fine regardless of rotation speed.
Thanks for the response. Actually I found my problem. The RpmEnableLowLimit and RpmEnableHighLimit were set to zero. This meant the output was only active when the resolver was at rest. I set these limits to -32768 and 32767 and now it works fine regardless of rotation speed.
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