Eurotherm Drives 590 DRV Digital, Product Manual

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590 DRV Digital DC Drive Product Manual
Chapter 6 Service and Maintenance
Figure 6.3 - 590 DRV with Lower Cover Removed
Figure 6.2 - Securing the 590 DRV Open
Insert screw here
4
3a
3b
3c
3d
To access the internal parts of the power section, loosen the two ¼-turn screws
holding the controller top to the drive at the top of the controller case.
WARNING!
Loosening the ¼
-
turn screws while the 590 DRV is mounted
vertically will allow the controller section to pivot
downward. Support the controller section while
loosening the screws and lower it gently to its fully open
position.
If you are working on the 590 DRV on a workbench, insert a spare
M8 or 5/16-18 bolt through each of the hinge slots at the bottom of
the drive to prevent the controller from dropping onto the power
section while you are working inside.
Once finished inside, remove the extra bolts being used as stops (if
applicable) and return the controller section to its position covering
the base. Secure the controller section by tightening the ¼-turn
screws.
PREVENTIVE MAINTENANCE
Users should perform regular preventive maintenance every six months to ensure long life and continued usefulness of
the 590 DRV. Keep the drive and its components clean, check auxiliary fans if fitted, and make sure connections and
mounting bolts have not loosened from vibration.
Required tools
This procedure requires a torque wrench and a torque screwdriver.
Procedure
The red, white, and blue control wires can be checked by gently
attempting pulling the wires out of the terminals. The terminals should
hold the wires firmly in place. The 14 gauge black wires connected to
the top green terminal D1 through D4 and connected to the bottom
terminals (F+, F-, FL1, and FL2) can also be checked by hand.
All the remaining wires should be checked with a torque wrench. The
torque specification label on the drive lists the tightening torque
specifications.
1. Remove the lower cover.
2. Inspect all visible wiring and terminals for evidence of burning
and/or abrasion.
3. Verify the tightness of:
a. Power and ground wires connected to the controller.
(TORQUE)
b. All connections to the DC contactor. (TORQUE)
c. Connections on both sides of the control terminals.
d. Control and field wires at the top green terminals, D1 through
D8.
4. Open the chassis by loosening the two ¼-turn screws.