Thermal Dynamics ULTRA-CUT 200 XT, Руководство по эксплуатации

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ULTRA-CUT 200 XT
A-66 APPENDIX Manual 0-5304
231-236 Inverter VAC Mismatch.
Different inverter modules are manufactured for 480VAC, 380-415VAC & 208-230VAC operation voltages. There
is a key, called inverter ID, read through the inverter’s ribbon cable, to identify which voltage range the inverter
is designed for. The unit itself is wired differently for the different input voltages and part of that includes a
jumper at J61 on the System Bias board that indicates to the System Bias board what voltage the unit is wired
to accept.
At power on, the System Bias board measures the incoming voltage, determines what input voltage range it
fall into and sends that range information to the CCM. Before Appling power to the inverters by turning on
the input contactors, the CCM checks that each connected inverter is of the correct voltage matching that of the
System Bias board. The inverter ID’s are read from the lowest section to the highest so in all cases if it truly is a
wrong voltage inverter it should call out the A section whose code is read first. A VAC mismatch of a B section
is likely another problem.
Possible causes:
• Wrong voltage inverter (very unlikely but easy to check).
• System Bias board wrong J61 jumper (unlikely but easy to check)
• Defective inverter.
• Ribbon Cable
• CCM
• System Bias board defective.
Troubleshooting:
1. If System Bias board has either the wrong jumper or is defective it will call out the first inverter section, code
231, because all the inverters won’t match the incorrect signal and 1A is checked first.
a. For the jumper Wire #48 should be connected from J61-1 to:
i. J61-2 for 208-230 VAC
ii. J61-3 for 400 VAC
iii. J61-4 for 480 VAC
Check for proper connection and continuity.
b. System Bias may be defective reporting the wrong voltage ID. On the output of the System Bias board
at J62 measure relative to TP1 or ( J62-8, 24VDC_RET) to J62-12 for signal /VAC_IDAb and J62-14 for
signal /VAC_IDBb. The 2 signals should read according to this table. “0” = 10-12V; “1” = 24V.
signal 230V 400V 480V ERR
/VAC_IDAb 0 1 0 1
/VAC_IDBb 0 0 1 1
2. Defective inverter, ribbon cable or CCM.
a. On the inverter section swap the ribbon cable of the inverter section whose fault was indicated with that
of a different inverter section. If fault remains unchanged, still calls out the original inverter section, the
problem is with either ribbon cable or CCM. If fault changes to the different section, the one the ribbon
cable was swapped with, then it’s the inverter that’s defective.
b. If the fault remained unchanged in Step A, on the inverter end, put the ribbon cables back in their original
positions. Now swap suspect ribbon cable with another one on the CCM. If the fault now moves to a
different section it’s the ribbon cable. If it remains with the original section the problem is the CCM.