20
E 1 Electrical connection: CMC-TC master
4. Connection Alarm relay (potential-free changeover contact)
5. Voltage connection and PE conductor connection
6. WebCam connection using USB cable
DK 7320.000
The enclosure earthing is to be connected to the
potential equalization of the enclosure system. For this
purpose an earthing pin is provided at the rear side of
the enclosure. The earthing conductor is not part of the
scope of supply. The power supply of the Master is
made by a country-specific IEC cable, as named in
Appendix A1 Scope of supply/Accessories
. The
integrated power pack is to be used exclusively for the
voltage supply of the CMC-TC Master!
When on voltage, the Master automatically starts the
boot procedure.
Note: The alarm relay enters the
release condition as soon as the
master is on mains voltage. In case of
mains failure the alarm relay drops out
once, triggering an alarm. Using this
function it is possible to implement an
on-wire message, e.g. to a central
station.
The connection cable of the RITTAL WebCam is plugged in directly in a vacant USB port of the RITTAL CMC-
TC Master. Up to 2 Rittal WebCams are supported.
Maximum admissible cable length: 5 m.
Note:
The master unit can be set by the definition of alarm
actions so that the alarm relay is actuated with arbitrary
sensor states set by the user. The alarm relay remains
actuated as long as such a state exists.
With the actuation of the alarm relay the alarm LED on the
front of the master unit is switched to red.
The alarm relay is connected through the RJ 12 sockets
using RJ 12 connectors. The technical specification of the
alarm relay is shown in
Appendix B1 Technical data,
which
you must not exceed for technical and safety-relevant
reasons. The assignment of the alarm relay is made by
software parameterization, see
Appendix I 1 Operation
CMC-TC by browser
. The internal circuitry of the alarm
relay is shown below.
