Parker
Hannifin
Troubleshooting
The Aries EPL drive design features easy connectivity, auto-detect functions,
and reliability. In addition, LEDs on the front panel of the unit provide quick
identification of AC power, drive, and EPL/Ethernet status. If, after following
the installation guidelines in The Aries EPL Hardware Installation Guide, your
drive does not function properly, use the guidelines and procedures in this
section to troubleshoot. These guidelines also apply to troubleshooting a
malfunction during normal operation of the drive.
A problem with the drive typically can be traced to one of four areas: power,
power-up sequence, communications, and motor control. If your system is
not functioning properly, follow the steps indicated for each of these areas.
Power
If none of the LEDs are illuminated, do the following:
1. Look for problems with AC power. Check the AC power source. Also
check connections at the L1, L2, and earth ground terminals of the
motor mains connector, and at the C1 and C2 terminals of the control
mains connector.
2. If the AC wiring is correct but no LEDs illuminate, remove all
connections to the drive (Drive I/O, Motor, Motor Feedback, and
Ethernet cables), leaving the Mains control power C1, C2, and earth
ground terminals connected. Apply power to the drive. If any LEDs
illuminate, then a short exists in one of the disconnected cables.
Power-Up Sequence
Observing the power-up sequence may help identify defective hardware or
software issues. Any deviation from the following power-up sequence may
indicate the need for additional technical resources. Please see “
” on page 3 for contact information.
1. Cycle power to the drive and observe the drive and EPL status
LEDs.
2. When power is first applied, the right drive status LED turns RED.
This is the default hardware state and simply indicates that power
is applied.
3. After approximately 8 seconds, the right drive status LED turns off
and the left drive status LED changes from off to yellow. This
indicates the Ethernet processor has booted and is now in the
process of booting the motor control processor.
4. After approximately 4 more seconds, the right drive status LED
changes from off to RED again, indicating that the motor control
processor has completed the boot process.
5. The left drive status LED changes states depending on conditions
described in the section “
6. The EPL status LED changes states depending on the status of the
Ethernet or EPL network as described in the section
“
182 ACR9000 Series Hardware Installation Guide
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