Note:
• Maintenance and component replacement intervals are based on the assumption
that the equipment is operated within the specified ratings and ambient
conditions. ABB recommends annual drive inspections to ensure the highest
reliability and optimum performance.
• Long term operation near the specified maximum ratings or ambient conditions
may require shorter maintenance intervals for certain components. Consult your
local ABB Service representative for additional maintenance recommendations.
Maintenance timers and counters
The control program has maintenance timers and counters that can be configured to
generate a warning when a pre-defined limit is reached. Each timer/counter can be
set to monitor any parameter. This feature is especially useful as a service reminder.
For more information, see the firmware manual.
Disconnecting the DC/DC converter
￭
Disconnecting the DC/DC converter from the energy storage
WARNING!
Obey the safety instructions of the drive. If you ignore them, injury or
death, or damage to the equipment can occur. If you are not a qualified
electrical professional, do not do installation, commissioning or
maintenance work.
This procedure tells you how to disconnect the DC/DC converter from the energy
storage.
1. Set the control panel to local mode with the Loc/Rem key.
2. Push the Stop key on the control panel.
3. Set parameter 120.19 Enable start signal to value Off. This prevents an accidental
start of the unit.
4. Open the energy storage protective circuit breaker.
5. Open the energy storage disconnecting device. Lock out and tag out.
Note: The load disconnected indicator light [P13.x] is on when the energy storage
disconnecting device is open.
6. If it is necessary to disconnect the DC/DC converter from the drive system, and
the converter has a DC switch-disconnector [Q11], continue with step 2 of the
procedure in section Disconnecting the DC/DC converter from the drive system
with the DC switch-disconnector (page 90).
Maintenance 89
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