User's Manual

Table Of Contents
DIB-500 R4.1 Setup and commissioning
Connecting external alarms – optional, with VAC or alerting expansion
128 Installation, Operation and Service Manual 90DIB500R41IM_FCC02 99.1
4. Ensure that all the terminals of vacant alarm inputs are connected through alarm
jumpers.
Strain relief of connected cables / connecting lines
When connecting cables and connecting lines, you must ensure that they are protected
against tensile strain.
5. Fasten the connected cables in the equipment rack in such a way that they are pro-
tected against tensile strain, e. g. by using cable ties.
You have successfully connected external alarms.
5.12.3 Mounting the top cover of the mounting frame
The top cover of the mounting frame must be mounted again for normal operation.
Proceed as follows to mount the top cover of the mounting frame:
Preparation:
The network element must have been put out of operation temporarily, refer to sec-
tion 8.1 on page 163.
The tools, auxiliary means and materials specified must be available, refer to
section 5.2 on page 90.
You need the mounting screws you removed before.
Carry out the following steps:
Risk of electric shock
Electric shock when touching live parts. Hardware components in the equipment cabi-
net are live.
When performing work in the equipment cabinet, ensure that the voltage source on
site is switched off. This must have been checked with a voltmeter.
1. Position the top cover of the mounting frame.
2. Tighten the mounting screws of the upper cover of the mounting frame. Use a size
1 cross-head screwdriver for this purpose, refer to Figure 5.26.
You have successfully mounted the top cover of the mounting frame.