SONA BLW Precision Forgings Ltd.
Customer: Royal Enfield
Report No: SC-HW-RE-3
Study: RE V4 R0.04 Impedance Check After Assembly
Date:02-05-2025
After Control & Power Board Assembly Below impedance need to check Before Bus Bar Soldering in Control Board:
Using DMM (Digital Multimeter) measure the impedance at connector point for each phase:
7
5
3
8
6
4
R-PHASE
Multimeter Probing
Point
Connector
J7
J7
J7
DMM +ve
Pin
1
3&5
4&6
DMM-ve
Pin
2
7&9
8 & 10
Impedance
6.8K - 8.8k
1.4K - 1.6K
1.4K - 1.6K
Y-PHASE
Multimeter Probing
Point
Connector
J8
J8
J8
DMM +ve
Pin
1
3&5
4&6
DMM-ve
Pin
2
7&9
8 & 10
Impedance
6.8K - 8.8k
1.4K - 1.6K
1.4K - 1.6K
B-PHASE
Multimeter Probing
Point
Connector
J9
J9
J9
DMM +ve
Pin
1
3&5
4&6
DMM-ve
Pin
2
7&9
8 & 10
Impedance
6.8K - 8.8k
1.4K - 1.6K
1.4K - 1.6K
Using DMM, check for the continuity in diode mode (HV):
Note: If this value shows short, don’t proceed for further.
Diode mode
DMM -ive(in HV +ive) DMM +ive(in HV -ive)
Page 1 of 1
Limits in V
0.3V – 0.7V