System Power Supply Crestron C2N-SPWS300
6 • System Power Supply: C2N-SPWS300 Operations Guide - DOC. 8190
SETUP LED and Pushbutton
The C2N-SPWS300 is TSID ready. The SETUP pushbutton and its associated LED
located on the front panel are used for setup of the unit’s network ID during the
initial configuration of a Cresnet system or when the device is being added/replaced.
Refer to “Method B (Touch Settable IDs)” on page 9 for detailed information.
Industry Compliance
As of the date of manufacture, the C2N-SPWS300 has been tested and found to
comply with specifications for CE marking and standards per EMC and
Radiocommunications Compliance Labelling (N11785)
NOTE: This device complies with part 15 of the FCC rules. Operation is subject to
the following two conditions: (1) these devices may not cause harmful interference,
and (2) these devices must accept any interference received, including interference
that may cause undesired operation.
Setup
System Requirements
A C2N-SPWS300 is necessary to supply power to modular "card cage" control
systems (i.e., CNRACKX, CNRACKX-DP, and RACK2), since these units do not
employ internal power supplies. C2N-SPWS300s may also be required in a Cresnet
system managed by an integrated control system (i.e., AV2 or PRO2) if the power
requirements of the system components are greater than the internal 50-watt power
supply of the control system.
To determine the number of C2N-SPWS300s necessary to power all Cresnet
components in a particular Cresnet system, the total system power requirement must
be calculated. This is accomplished by adding the power requirements of all system
components. Refer to the leading specifications of each component for individual
power requirements. The total system power requirements should include the control
system, all cards in the control system, any expansion racks and associated cards,
and any network units. Once the total system power requirement is calculated, the
number of C2N-SPWS300s used should be selected such that their combined output
wattage meets or exceeds the total system power requirement.
Another important system factor to consider is the fact that a single network unit
cannot be powered by two different C2N-SPWS300s. In other words, one C2N-
SPWS300, which is not being used to its full capacity, cannot contribute its unused
power to 'help' another C2N-SPWS300 power the network units connected to it. For
example, suppose a system consists of a RACK2 (cards included) with a power
requirement of 20 watts, a CNX-DVP4 (50 watts required), five Crestron Isys™
touchpanels (each with a power requirement of 46 watts; including cards), and other
ancillary Cresnet devices with a combined power requirement total of 25 watts. The
total system power requirement is 325 watts. The first C2N-SPWS300 could power
everything, but the CNX-DVP4 on seven channels for a total of 275 watts. A second
power supply (C2N-SPWS3000 or CNPWS-75) could power the CNX-DVP4 for a
total of 50 watts.
