71M6403-IGTR TERIDIAN [Teridian Semiconductor Corporation], 71M6403-IGTR Datasheet - Page 59

• Manufacturer Part Number: 71M6403-IGTR
• Description: Electronic Trip Unit
• Manufacturer: TERIDIAN [Teridian Semiconductor Corporation]

CE Calculations
The CE performs the precision computations necessary to accurately measure and detect current. The compute engine
firmware implements the following:
CE Front End Data (Raw Data)
Access to the raw data provided by the AFE is possible by reading addresses 0 through 7, as listed below. The table also shows
the Configuration Register location for each input channel.
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Supports 6 current sensing channels
Each channel individually configurable for Current Transformer or Rogowski coil
Each channel individually configurable for x8 gain for low signal sensors (MAX out < 20 mV)
Channel I4 configurable for Ground Fault current with fundamental frequency band pass filter or the vectorial sum of
Channel I5 includes a band pass filter to process the components of fundamental frequency of operation only
Programmable accumulation interval generates interrupt on DIO6 for data collection
Individual channel calibration coefficients to adjust the gain for desired accuracy
first current input channel data (Insqsum)
Programmable FAULT_THRESH register sets over current detection to generate FAULT_PULSE on DIO7
Address (HEX)
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
INEUTRAL
Channel
TEMP
Input
I0
I1
I2
I3
I4
I5
©
2006 TERIDIAN Semiconductor Corporation
CE RAM Locations
Configuration
Register
0x2C
0x2D
0x2A
0x2B
0x28
0x29
--
--
Description
Current input 0
Current input 1
Current input 2
Current input 3
Current input 4
Current input 5
Temperature
INEUTRAL monitor/compara-
tor input to power fault block
Electronic Trip Unit
71M6403
SEPTEMBER 2006
REV 1.0