bonitron M3645, Reference Manual

Page: 37 / 56

User’s Manual
37
5.
M
AINTENANCE AND
T
ROUBLESHOOTING
Repairs or modifications to this equipment are to be performed by Bonitron approved
personnel only. Any repair or modification to this equipment by personnel not approved
by Bonitron will void any warranty remaining on this unit.
5.1.
P
ERIODIC
T
ESTING
There are no requirements for periodic testing of these units. It may be beneficial to
repeat start-up procedures and checks when performing routine maintenance.
5.2.
M
AINTENANCE
I
TEMS
Check the fan periodically for debris, and blow out with an air hose if it has become
obstructed or not running at full capacity.
Power should not be applied when
blowing dust and debris out of unit .
5.3.
T
ROUBLESHOOTING
CAUTION!
There are no user serviceable parts within the M3645 regen unit. If you
are still experiencing problems after you have reviewed this whole section,
you may contact Bonitron for additional assistance at (615) 244-2825.
5.3.1.
POWER LED
IS NOT ON
,
OR
D
IGITAL
D
ISPLAY IS NOT ACTIVE
:
 Check AC input voltage at terminals. Voltage should be within range
specified in Table 2-1 for your unit. If the power light will not come on,
check any overcurrent devices or disconnects upstream of the regen.
 If the power lamp will not come on, it is likely that the regen is damaged
and needs to be repaired.
5.3.2.
READY
OUTPUT WILL NOT CLOSE
The Ready output indicates that the module is enabled and in a ready
condition. When the power is applied to the module, the Ready output will
normally close after a startup delay of approximately 2 seconds. Thereafter,
the Ready output should be closed, indicating that the system is ready to
operate. If the Ready output fails to close, one of several faults may be
indicated.

Make sure the Power LED is on.
If the Fault LED is blinking, refer to Table 4-1
, “Blink Codes” to determine
which fault is active, or look at the digital display.

If the Fault LED is on solid, the "Enable" input is not activated.
5.3.3.
U
NIT WILL NOT RESPOND TO
ENABLE
COMMAND
 Confirm that 24V is present between TB2-2 and TB2-4 (see Figure 3-6).
 If the internal 24V supply is being used, confirm that a jumper is present
between TB2-4 and TB2-5 (0).
5.3.4.
D
RIVE TRIPS ON
DC B
US
O
VERVOLTAGE DURING BRAKING
If the attached drive trips, it typically indicates the regen is not operating.
There are some simple things that can determine the cause.
 Make sure the regen has power and is enabled. The Ready output will
close if the unit is ready to operate. (4.5.2)