User guide

Galaxy 55 User Guide
40
6 Check the I/O module setup as follows:
– Check that the I/O module has been correctly installed and all external links and cables are securely fitted.
– Check the maximum cable length has not been exceeded.
4.2 LEDs
Green LEDs are always used for good or positive indication, flashing Green/Amber if non-critical conditions exist.
Amber LEDs indicate there is a critical fault present within the module.
The Operator Panel displays the aggregated status of all the modules. The Ops Panel LEDs are shown in Figure
4–1 and the LED status conditions are listed in Table 4–1
.
For details on how to remove and replace a module see Section 4.9.
Warning Whenever replacing a module NEVER leave an EMPTY space in the rear of the enclosure, obtain
a replacement before removing the problem part.
4.3 Audible Alarm
The Operator Panel also includes an Audible Alarm which indicates when a fault state is present. The following
conditions will activate the Audible Alarm:
•Drive Fault
•Fan slow
• Voltage out of range
•Over temperature
• Thermal overrun
• UPS two minute warning
• System fault
4.3.1 Audible Alarm Mute
When the Audible Alarm sounds, it may be muted by pressing the Alarm Mute push-button until a double beep is
heard (approximately 1 second). The Alarm Mute push-button is located beneath the indicators on the Operator
Panel (see Figure 4–1).
When the alarm is muted it will continue to sound with short intermittent bleeps to indicate that a problem still
exists, It will be silenced when all problems are cleared. (See also Thermal Shutdown states, Section 4.5.5).
Figure 4–1 Ops Panel LEDs and Switches