Yaskawa GPD505 - Manual (Page 26)

TM4028 7/12/2001
26
7. Diagnostic LEDs
7.1 RXD
This LED is lit under the following conditions:
• While the drive is attempting to establish communication with the option card, the RXD, TXD, and
FAULT LEDs blink in unison and “CALL” blinks on the digital operator. If this condition occurs, repeat
the steps outlined in Section 2.2, Drive Set-up.
• During normal operation with the drive attached and configured on the network, this LED blinks anytime
the drive receives a message addressed to it. Its blinking under these conditions indicates a “healthy”
link between the drive and the network.
• During normal operation with the drive either unattached or unconfigured on the network, this LED
blinks while the option card is communication with the drive. Its blinking under these conditions
indicates a “healthy” link between the drive and the option card.
• During use of the parameter management functions, this LED blinks during the first phase of each
function and is off upon completion (See Section 6, Parameter Management Functions).
7.2 TXD
This LED is lit under the following conditions:
• While the drive is attempting to establish communication with the option card, the RXD, TXD, and
FAULT LEDs blink in unison and “CALL” blinks on the digital operator. If this condition occurs, repeat
the steps outlined in Section 2.2, Drive Set-up.
• During normal operation, this LED blinks anytime the drive is responding to a message from the
network. Its blinking indicates a “healthy” link between the drive and the network.
• During use of the parameter management functions, this LED blinks during the second phase of each
function and remains lit upon completion (See Section 6, Parameter Management Functions).
7.3 FAULT
This LED is lit under the following conditions:
• While the drive is attempting to establish communication with the option card, the RXD, TXD, and
FAULT LEDs blink in unison and “CALL” blinks on the digital operator. If this condition occurs, repeat
the steps outlined in Section 2.2, Drive Set-up.
• During normal operation, this LED is lit if a cable loss is detected (See Section 4.4,