110 Rockwell Automation Publication 7000-UM202D-EN-P - May 2018
Chapter 2 Power Component Definition and Maintenance
Testing Procedure for SCR
Self-Powered Gate Driver
Board
Testing Equipment
Ensure you have the following equipment available in order to perform testing
tasks.
• Digital oscilloscope
• Function generator w/duty cycle control
• DC power supply (+15V @ 300 mA required)
• Digital multimeter
• Temperature sensor board (80190-639-02)
• SPS test power harness (80018-695-51)
Procedure
1. Connect a clamped ABB #5STP03D6500 SCR to the gate-cathode
leads of the SPGDB board (TB4-1/TB4-2).
2. Attach a temperature sensor board to the TB2-1/TB2-2 terminals.
3. Apply +15V test power to terminals TB3-1 and TB3-3 (TB3-1 is at
+15V while TB3-3 is the +15V return). Leave TB3-2 open.
4. Measure TP4 to TP3, which should be +14.4V, +/-100mV.
5. Measure TP5 to TP3, which should be +5.0V, +/- 250mV.
6. Measure TB2-1 to TB2-2, which should be +14.4V, +/-100mV.
7. Measure the voltage at U4-pin2 to COM, which should be +1.0V, +/-
100mV.
8. Measure the voltage at U4-pin3 to COM, which should be 0V.
9. Measure the voltage at U4-pin7 to COM, which should be +3.6V, +/-
100mV.
10. Verify that the OT1 LED is off.
11. Measure TP7 to TP3, which should be 0V.
12. Measure TP9 to TP3, which should be +5.0V, +/- 250mV.
13. Measure TP8 to TP3, which should be 0V.
14. Measure TP1 to TP2, which should be 0V.
15. Connect a jumper between TB3-1 and TB3-2 and verify that the
voltage at TP6 is +2.2V, +/-100mV.
16. Apply a 60Hz, 33% duty cycle signal to the OP1 fiber optic input.
17. Verify that the diagnostics transmitter LED, OT1, is on.
18. Verify that the signals at TP9 and TP8 are as shown in Figure 95 on
page 111.
19. Verify that the signal between TP1 and TP2 is as shown in Figure 96 on
page 112 and Figure 97 on page 112
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