16
D33351 - RTL 120/520 Eng.
24.06.15 AM
We reserve the right to make changes without notice
28. POWER CABLE (ASA 2418) FOR RTL 120/520 WITH 24 VOLT AC SUPPLY
The RTL 120/520 may be powered by 24 V~ instead of receiving power direct from the Master or from the auxiliary
power suppliers.
This becomes necessary when you want to use an existing cable system, susitable for the power supply of the
RTB ... zone unit, of the COSTERZONE system, which are powered by 24 V~.
The ASA 2418 twin cable permits the transfer of the COSTERZONE system to the MULTIZONE system without
having to change the cables already laid in the site.
The cabling of the RTB ... zone unit of the COSTERZONE system consists of four wires:
– 24 Volt ~ phase.
– 24 Volt ~ neutral.
– C = hot pole of the C-Bus
– 0C = cold pole of the C-Bus
These are the four cables which run from the UMT 704 Master to the RTB ... zone unit, which are powered by 24 V~
and which receive C-Bus from the Master itself..
The site is converted from COSTERZONE to MULTIZONE without changing the existing cabling, as follows:
24 Volt ~ phase
24 Volt ~ neutral
C = hot pole of C-Bus
which becomes
P+ = hot pole of P-Loc
0C = cold pole of C-Bus
which becomes
P– = cold pole of P-Loc
BLACK BROWN
BLACK RED
G = Power supply RTL ...
P– = 0 V Power supply
& Bus P-Loc
ASA 2418
P– = cold pole of P-Loc P+ = hot pole of P-Loc
WARNING:
STRICTLY FOLLOW THE WIRING DIAGRAM ABOVE, ESPECIALLY WITH REGARDS TO THE A 24 Volt ~ WIRING.
TAKE CARE IN VERIFYING NEUTRAL AND PHASE IN ALL POINTS TO AVOID SHORT CIRCUITING THE 24 Volt ~ LINE.
WHEN WIRING IS EXTENDED TO MANY ZONE UNITS, THERE IS A HIGH RISK OF INADVERTEDLY CONFUSING NEUTRAL WITH
PHASE AND VICE VERSA: BEFORE POWERING UP, CHECK ALL CONNECTIONS CAREFULLY.
Amendments to data sheet
Date
Revision n.
Page
Section
Amendment description
Firmware
version
Software
version
24.06.15 ED
1 , 4
5
1. BUILT IN .... 6. WIRING DIAGRAMS
9. COMMUNICATION BUS P-LOC ....
Deleted sentences
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