10-14
Troubleshooting
Power Module and Interface
Board Resistance Check (cont.)
2.
Measure resistance between:
•
pins J14 and J15 for phase L1/T1
•
pins J9 and J10 for phase L2/T2
•
pins J1 and J2 for phase L3/T3
The resistance should be approximately 100
Ω
.
If any of the resistances measure greater than 100
Ω
, recheck the
resistance values directly at the gate lead connectors as shown in
Figure 10.9.
Based on the results, one of the following actions will be required:
1.
All resistance values are valid - Replace interface board.
2.
Resistance(s) measure greater than 100
Ω
– Replace correspond-
ing power pole(s).
Thermistor Resistance
1.
Measure resistance between:
•
pins J6 and J24 for phase L1/T1
•
pins J8 and J23 for phase L2/T2
•
pins J7 and J22 for phase L3/T3
The resistance should be less than 500
Ω
.
If any of the resistances measure greater than 500
Ω
, recheck the
resistance values directly at the thermistor lead connectors as shown
in Figure 10.9.
Based on the results, one of the following actions will be required:
•
If all resistance values are valid, replace interface board.
•
If resistance(s) measure greater than 500
Ω
, replace the
corresponding power pole(s).
Figure 10.9 Gate and Thermistor Lead Identification (180–1000A)
Gate lead,
phase L2-T2
Gate lead,
phase L1-T1
Gate lead,
phase L3-T3
Gate lead,
phase L3-T3
Gate lead,
phase L2-T2
Gate lead,
phase L1-T1
Thermistor lead,
phase L1-T1
Thermistor lead,
phase L3-T3
Thermistor lead,
phase L2-T2
Содержание SMC Dialog Plus
Страница 46: ...2 20 Installation ...
Страница 78: ...4 14 Programming ...
Страница 149: ...9 6 Diagnostics ...
Страница 157: ...10 8 Troubleshooting Figure 10 3 Removal of Control Module 180 360A 1 3 2 4 ...
Страница 169: ...A 6 Specifications ...
Страница 179: ...C 4 Renewal Parts ...