4 low voltage (lv), 4 low voltage (lv) -3 – Delta Electronics AC Motor Drive VFD-G User Manual
Page 144
Chapter 5 Troubleshooting |
Revision July 2008, EG03, SW V1.06
5-3
5.4 Low Voltage (Lv)
Low voltage
Is input power correct? Or power cut,
including momentary power loss
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Restart after reset
Check if there is any malfunction
component in
power supply circuit
or disconnection
Change defective component
and check connection
Check if voltage is
within specification
Make necessary corrections,
such as change power supply
system for requirement
Check if there is heavy load
with high start current in the
same power system
Check if Lv occurs when
breaker and magnetic
contactor is ON
Suitable
transformer
power
capacity
Check if voltage between
+2 (+2/B1) and - is greater than
400VDC (for 460V models)
No
Maybe AC motor drive has malfunction.
Please contact DELTA.
Yes
Control circuit has malfunction or
misoperation due to noise. Please
contact DELTA.
Yes
Using the different power
supply for this drive and
heavy load system
- SMT Power Inductor SIL104R (1 page)
- Q48SB (2 pages)
- Planar DC/DC Transformer ER/ER(Plate) 22 (1 page)
- SMT Power Inductor HCB1190B (1 page)
- Series E48SR (15 pages)
- E48SR12007 (15 pages)
- SMT Power Inductor SIWC1360 (1 page)
- PFC Chokes PFC2815V Series (1 page)
- SMT Power Inductor SIB86 (1 page)
- PMC-24V050W1AA (2 pages)
- SMT Power Inductor HCB1050 (1 page)
- SMT Power Inductor HAH1330 (1 page)
- PFC Chokes PFC4120V Series (1 page)
- PFC Choke PFC3520V Series (1 page)
- SMT Power Inductor HCB1047B (1 page)
- SMT Power Inductor HAH1365 (1 page)
- SMT Power Inductor HMS1355 (1 page)
- Series S48SA (13 pages)
- E48SC (2 pages)
- SMT Power Inductor SILM106 (1 page)
- Delphi Series L48DB (2 pages)
- S48SA (13 pages)
- E36SR (2 pages)
- 3KVA (31 pages)
- SMT Power Inductor HMU1056L (1 page)
- Through Hole Power Inductors THCBR1090 (1 page)
- SMT Power Inductor SIL625 (1 page)
- SMT Power Inductor 1378(S) (1 page)
- Through Hole Power Inductors 1411 (1 page)
- Current Sense Transformers TCE1310H (1 page)
- H48SR (13 pages)
- Series E48SH (15 pages)
- AC Motor Drive VFD-EL (209 pages)
- Through Hole Power Inductors THAH1095 (1 page)
- Suppression Inductors LFU09V (1 page)
- SMT Power Inductor HCB0740A (1 page)
- Power Output Module DVPPS01 (2 pages)
- SMT Power Inductor SIR74 (1 page)
- L36SA (2 pages)
- 4.5V~ 5.5V (3 pages)
- Delphi Series V48SB (2 pages)
- Series S48SP (14 pages)
- Series 240W (11 pages)
- Delphi Series E24SR (15 pages)