ABB Relion 670 series - Page 1293

The A\D converted signals goes through a filter with a cut off frequency of 500 Hz and are
reported to the numerical module (NUM) with 1 kHz at 50 Hz system frequency and 1,2 kHz at 60
Hz system frequency.
PMC
PCI to PCI
PC-MIP
PC-MIP
AD3
AD1
AD2
AD4
Channel 1
Channel 2
Channel 3
Channel 4
Channel 5
Channel 6
Channel 7
Channel 8
Channel 9
Channel 10
Channel 11
Channel 12
1.2v
2.5v
level shift
en05000474.vsd
IEC05000474 V1 EN-US
Figure 648: The ADM layout
1MRK 502 066-UUS B Section 22
IED hardware
1287
Technical manual