8 FUSE MODULE
User Manual
page 12/16
armtel.com
© Armtel
ENG
2.3 Safety measures when using the product for its intended purpose
It is strictly forbidden to remove and install fuses in the product connected to the
power supply network.
It is forbidden to operate the product in rooms with high humidity (above 80%)
or the presence of conductive dust.
It is forbidden to operate a damaged product.
2.4 Operation
2.4.1 General information
8 Fuse module can be used as assigned to provide power supply for the subscriber
equipment of all types with input operation voltage of -48V. The input and output cables
should be connected with regard to the contact marking (see Figure 1).
2.4.2 Troubleshooting
Possible problems and their solutions are given in Table 3.
Table 3 – Troubleshooting
Problem
Possible cause
Solutions
Power supply of one or several
subscriber equipment is missing.
One or several LEDs is (are)
illuminated.
The fuse (fuses) is/ are
blown.
Find the failure and clear the
short circuit. Replace the faulty
fuse (fuses).
If the fuse is blown at the backup
module, «Alarm» signal is not
shaped at the main module.
Х2 terminal block of the
backup module is not
connected to Х3 terminal
block of the main
module.
Check reliability of analogous
contacts connection of the
terminal blocks at both the
main and backup modules.
