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  10-12 Troubleshooting Power Module and Interface Board Resistance Check (cont.) 24–135 Amp Remove the control module per the instructions beginning on page 10-6. Refer to Figure 10.7 for power module pin identification. Shorted SCR Test 1. Using an ohmmeter, measure the resistance between the line and load terminals of each phase on the controller. The resistance should be greater than 10,000 ohms. Feedback Resistance 1. Measure resistance between pins 1 and 2. Resistance should be 19,000 ohms, +/–5%. 2. Measure resistance between pins 7 and 8. Resistance should be 19,000 ohms +/–5%. Gate Lead Resistance 1. Measure resistance between pins 2 and 3. Resistance should less than 100 ohms. 2. Measure resistance between pins 6 and 7. Resistance should be less than 100 ohms. Thermistor Resistance 1. Measure resistance between pins 4 and 5. Resistance should be less than 150 ohms.If the power module fails any of the above tests, replace it. Figure 10.7Pin Locations for Power Module Resistance Check  2 3 7 6 1 8 4 5  Troubleshooting 10-13 180-1000 Amp Remove the control module per the instructions beginning on page 10-6. Refer to Figure 10.8 for interface board pin identification. Shorted SCR Test Using an ohmmeter, measure the resistance between the line and load terminals of each phase on the controller. Resistance should be greater than 10,000 ohms. Feedback Resistance 1. Measure resistance between:ãpins J17 and J18 for phase L1/T1ãpins J12 and J13 for phase L2/T2ãpins J4 and J5 for phase L3/T3Each resistance should be approximately 20K Ω . 2. Measure resistance between:ãpins J14 and J21 for phase L1/T1ãpins J9 and J20 for phase L2/T2ãpins J1 and J19 for phase L3/T3Each resistance should be approximately 20K Ω. If any of the measurements read “open,” replace the interface board. Figure 10.8Pin Locations for Power Pole Resistance Check (180–1000A) Gate Lead Resistance 1. Measure resistance between:ãpins J16 and J18 for phase L1/T1 ãpins J11 and J13 for phase L2/T2ãpins J3 and J5 for phase L3/T3The resistance should be approximately 100 Ω . J18 J16 J14 J15 J17 J12 J4 J24 J23 J22 J21 J20 J19 J6 J8 J7 J3 J5 J13J11 J2 J10 J1 J9  10-14 Troubleshooting Power Module and Interface Board Resistance Check (cont.) 2. Measure resistance between:ãpins J14 and J15 for phase L1/T1 ãpins J9 and J10 for phase L2/T2ãpins J1 and J2 for phase L3/T3The 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:ãpins J6 and J24 for phase L1/T1 ãpins J8 and J23 for phase L2/T2ãpins J7 and J22 for phase L3/T3The 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:ãIf all resistance values are valid, replace interface board.ãIf resistance(s) measure greater than 500 Ω , replace the corresponding power pole(s). Figure 10.9Gate 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   Appendix   A Specifications Electrical RatingsUL/CSA/NEMAIECPower Circuit Method of Connection Motor in delta or star, SCRs between windings and supplyNumber of Poles Equipment designed for three phase loads onlyRated Operation Voltage (Ue)200–480 VAC (–15%, +10%)200–600 VAC (–15%, +10%)200–415VY (–15%, +10%)200–500VY (–15%, +10%)Rated Insulation Voltage (Ui)N/A500V~Rated Impulse Voltage (Uimp)N/A4000VDielectric Withstand2200 VAC2500V~Repetitive Peak Inverse Voltage Rating200–480 VAC: 1400V200–600 VAC: 1600V200–415~: 1400V200–500V~: 1600VOperating Frequency50/60 Hz50/60 HzUtilization CategoryMG 1AC-53aProtection Against Electrical ShockN/AIP 00 (open device)DV/DT ProtectionRC Snubber Network Transient ProtectionMetal Oxide Varistors: 220 Joules @ 24–360A 220 Joules @ 480V, 500–1000A 300 Joules @ 480V, 500–1000A  Short Circuit Protectio nSCPD PerformanceType 1SCPD ListMaximum Fuse or Circuit BreakerDevice OperationalCurrent Rating (Ie)Fault CurrentWithstand Rating(A rms sym)24A500080A 35A5000125A 54A5000200A 97A10,000350A 135A10,000500A 180A10,000600A 240A18,000700A 360A18,0001000A 500A30,0001200A 650A30,0001600A 720A42,0002000A 850A42,0002500A 1000A85,0003000A 
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