Question:
What is the function of the device-internal DC fuses in the i700, i750, and i950?
When do the internal DC fuses trip?
Answer:
The internal DC fuses in the i700/i750 axis modules and i950 (device size 3) serve to minimize further damage in the event of an inverter defect.
The DC fuses only respond as a result of a major device defect, e.g., a short circuit in the power section of the inverter.
The DC fuses are permanently soldered into the device and therefore cannot be easily replaced on site.
ADue to the defect in the power section , replacement of the DC fuses would not be sufficient to recommission the device.
Dhe device must be replaced and, if necessary, sent in for repair.
DC fuses installed inside the device:
Servo inverters i700/i750:
- i700/i750, device size 1 (width = 50 mm): 30 A
- i750 (2x3kW dual-axis device),
Device size 1 (width = 50mm): 60A (2x 30A parallel)
- i700/i750, device size 2 (width = 100 mm): 60 A (2x 30 A parallel)
- i750, Device size 3 (width = 150 mm): 200 A
Servo inverter i950:
- i950, device size 3 (smallest) only: 30A
- i950, other device sizes: No DC fuse included
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