ADE7880 - Rogowski coil not working

Question

Hello, 
 I designed a circuit for energy monitoring using CT and Rogowski , this is done by closing and opening appropriate jumpers across burden resistor, fig shown below 
 
 I tested the circuit for Rogowski with all jumpers open, and on the software side I turned ON integrator by 
 // SPIWrite2Bytes(DICOEFF,0xFF8000); SPIWrite2Bytes(CONFIG,0x0001); // integrator on 
 But the output is not correct 
 
 IC is not changing . 
 
 But in the case of CT, it's working i closed jumpers for CT as mentioned in the ADE7880_userguide . 
 what is the issue with Rogowski, please Help.

dave.smith · Accepted Answer

Just a note about register writes. 
 If you write a register read it back to see if it is what you expect. 
 When writing a 4 byte register if you write 2 bytes then pull chip select high, the write should not happen. The spi expects x bytes depending on register address. Reading the register will have a different value than what you write. 
 This would have exposed a problem with the writes. 
 Dave)

Partner Forums

Partner Libraries

Products Mentioned

ADE7880 - Rogowski coil not working