bonitron M3460UC, Customer Reference Manual

Page: 33 / 56

User’s Manual
33
5.
S
TART
-
UP
, M
AINTENANCE AND
T
ROUBLESHOOTING
5.1. M3460UC S
TART
-
UP
/ F
IELD
T
EST
P
ROCEDURE
1. Ensure the M3460 has been properly installed and is disabled.
2. Ensure the M3460 DC bus is disconnected from the drive DC bus.
3. Ensure the charger DC output is connected to the Charger terminals.
4. Ensure the drive is operating properly with the M3460 disconnected.
5. Apply capacitor bank power to the Storage Bus input of the M3460 and
observe the following conditions:
•
The display screen status indicates (Ride-Thru Disabled)
•
(Charger Disabled)
6. Enable the M3460 and the Charger with the enable input or the digital display.
•
The display screen status will be (Charging) yellow LED is ON
•
When the storage bank is fully charged, the display status will be (Charger
standby) and (Ride-Thru standby)
7. Initiate the test mode with the Test input or display panel.
The DC bus should rise for as long as the test is performed. The display status
indicates (Testing).
8. Turn off the capacitor bank power to the M3460 and connect the DC bus of the
M3460 to the DC bus of the drive.
9. Turn on the AC power to the drive, then capacitor bank power to the M3460
the drive must be ON before applying power to the Ride-Thru .
10. Monitor the DC bus voltage and current with the display or with separate
meters. Also, monitor the AC input current to the attached drive.
11. Load the drive as much as practical and turn off AC power to the drive.
The display status should be (boosting).
DC bus voltage should hold at threshold boost level.
Motor should not lose speed or torque.
DC bus current should flow from M3460 to drive.
Drive input current should decrease.
The Display will show (Time limit fault) at the end of the event.
The M3460 and drive system should now be ready to be put into service.
CAUTION!
•
I
F THE
M3460
IS ACTIVE FOR LONGER THAN THE TIMEOUT SETTING
,
IT WILL SHUT
DOWN SWITCHING AND THE
DC
BUS WILL DROP TO THE NORMAL LEVEL
.
•
I
F THE OUTPUT
DC
BUS DROPS BELOW
70%
THE
M3460
WILL HAVE TO GO
THROUGH PRE
-
CHARGE AGAIN
.
5.2. M
AINTENANCE
I
TEMS
The M3460 is designed to require very little maintenance. Bonitron recommends a
yearly test of the system in order to ensure the system is functioning properly. If the
system is equipped with displays, then the cycle counters should indicate the number
of events since the last reset. If there are more than 10 events per month, the DC bus
threshold voltage setting should be checked and/or adjusted.
5.2.1. C
APACITOR
R
EPLACEMENT
R
ECOMMENDATIONS
The M3460 uses high quality aluminum electrolytic capacitors and is designed
for long life without maintenance. While a typical inverter may require capacitor
replacement after a certain time due to the heavy ripple currents, the M3460