Telemecanique Altivar 56 manual - Northern Industrial

AI2-UAI2-IAI2-UAI2-IBulletin No. 50006-519-01BDecember 1996Chapter 4 — DiagnosticsInput Line Voltage Measurement— PAATV56U41N4 to D12N4 andATV56U41M2 to U90M2— PAATV56D16N4 to D79N4 andATV56D12M2 to D46M2Figure 25: Location of PA and – Terminals: ATV56U41N4 to D79N4 &ATV56U41M2 to D46M2PROCEDURE 2:INPUT LINEVOLTAGEMEASUREMENTPROCEDURE 3:CHECKINGPERIPHERALEQUIPMENTTo measure the input line voltage:1. Perform Bus Voltage Measurement procedure (see page 42).2. Attach meter leads to L1 and L2. Set voltmeter to the 600 VAC scale.3. Reapply power. Check for correct line voltage per drive controller nameplaterating.4. Remove power and repeat procedure for L2 and L3, and L1 and L3.5. When all phases have been measured, remove power. Remove meter leadsand reinstall covers.The following equipment may need to be checked. Follow the manufacturer’sprocedures when checking this equipment.1. A protective device such as a fuse or circuit breaker may have tripped.2. A switching device such as a contactor may not be closing at the correct time.3. Conductors may require repair or replacement.4. Connection of cables to the motor or connections to ground may need to bechecked. Follow NEMA standard procedure WC-53.5. Motor insulation may need to be checked. Follow NEMA standard procedureMG-1. Do not apply high voltage to drive controller output terminals (U/T1,V/T2 or W/T3). Do not connect high potential dielectric test equipment orinsulation resistance tester to the drive controller since the test voltagesutilized may damage the drive controller. Always disconnect the drivecontroller from the conductors or motor while performing such tests.© 1996 Square D All Rights Reserved43ηττπ://νιχοντρολσ.χοm