2 / 4 P/N 1073567-EN • REV A • ISS 14NOV18
4.Ensure that the power switch on the input power module
on the rear of the 517EPS1 is set to OFF (0). Plug the
female end of the power cable into the socket in the power
input module. Plug the male end into a suitable power
outlet. Set the power switch to ON (1).
Note: When the power is switched on, the cooling fans start
running at a slow speed. Their speed increases as the unit
warms up.
Table 1: 517EPS1 Terminal Strip Connections
Pin
Name
Function Connect to...
RED +13.5 VDC Red lead in accessory cable
assembly
BLK DC ground Black lead in accessory cable
assembly
WHT Receiver failure alarm
input from rack
White lead in accessory cable
assembly
RELAY Normally open (NO)
dry contact
Customer remote alarm
equipment
Figure 2: Power Supply Rear Panel
Operation
No user operation is required after the unit is installed. Four
LEDs located on the front panel indicate the operational state
of the two output channels of the unit and of fiber optic
receivers mounted in the racks. See Figure 3 below.
Figure 3: Power Supply Front Panel
Table 2 below provides a convenient summary of LED
functions.
Table 2: Diagnostic LEDs
LED Name Color Indicates/Corrective Action
OUTPUT Green Output power provided to rack within rated
limits. No action required.
Red Rated load exceeded.
Off No power is being output from the unit.
ALARM Red Optical failure in one or more receiver
cards. Locate the failed unit(s).
Off All receiver cards are functioning normally.
No action required.
The ALARM LEDs indicate that an optical failure has occurred
in a receiver module in the indicated card cage, A or B. This
visual alarm function is supplemented by a piezo device which
simultaneously sounds an alarm.
A MUTE switch, located on the front panel in the center of the
LEDs, may be activated to silence this function. When in the
MUTE position, only the sound is disabled.
Alarm outputs are provided for each channel. These consist of
one pair of dry contacts per channel. They may be connected
to external, customer-furnished equipment to transmit alarm
status to a remote monitoring location.
Maintenance
The equipment is solid state and does not require any field
adjustments, periodic maintenance, or routine calibration.
Fuse replacement
The input power fuse is located in a power entry module built
into the input power housing on the rear panel. See Figure 2
and Figure 4 below.
Figure 4: Power Entry Module – Fuse Location and Replacement
To replace the fuse:
WARNING: Disconnect the AC line cord from the power supply
and from the AC outlet before attempting to remove or replace
the fuse.
Note: Carefully note the position of the fuse in the fuse carrier
before removing it to avoid installing or replacing the fuse
incorrectly.
1.Remove the fuse carrier by locating the small slot at the
top of the power entry module and gently prying the cover
open using a small flat screwdriver. When the cover is
open, pry the fuse carrier out of the module, and then
remove and examine the fuse.
2.If necessary, replace with a fuse of the same type and
rating and return the fuse carrier to the power entry
module. Close the cover until it snaps into place.
3.Connect the AC line cord to the power supply and to the
AC outlet.
4.Set the power switch on the rear of the unit to the ON
position.
Contacting support
For help installing, operating, maintaining, and troubleshooting
this product, refer to this document and any other
documentation provided. If you still have questions, contact us
