DS-E Series
（
1~6KVA
）
User’s Manual
24
4
．
Perform periodic inspection on battery voltage and UPS working status.
4.6.3 FAQ
If the UPS fails to work properly after starting, please don't jump to the
conclusion of UPS failure. Please refer to the following and try to solve the
problem.
Problem 1
Power supply is normal; UPS is able to output AC 230V after start, yet in the
status of battery inversion with buzzer giving intermittent buzzing.
Possible cause: Unstable AC power input as a result of poor contact of the
junction points, sockets or other connection parts of the electric network feeder
circuit connected to the UPS.
Problem 2
After UPS is installed, and after the electric brake or UPS "ON" button is
switched on, the fuse will be burnt out or tripping occurs.
Cause: wrong connection of three UPS input wires, for example, zero line or
fire wire is connected to UPS earth wire (case
）
; Or wrong connection of three
UPS output wires.
Problem 3
After UPS is started, it outputs AC 230V, yet it's working under bypass status
("BYPASS" keeping lighted).
Possible cause: too-heavy load sustained by the device which exceeds rated
power of the UPS. In such cases, relieve the load to the UPS, or use a UPS of
higher rated power capacity. If it is a temporary bypass status caused by
start-up impact of the load, and returns to proper status automatically, that's
normal operation.
Problem 4
Display and output of the UPS are normal after start. However, the output stops
as soon as load is connected to it.
