DOOR PHONE - VIDEO DOOR PHONE SYSTEMS: Installation - Urmet

BASIC SYSTEM DIAGRAMS INSTRUCTIONS FOR URMET DOMUS DEVICE INTERCHANGEABILITY
REPLACING VIDEO DOOR PHONE POWER UNIT Ref. 789 WITH Ref. 789/1A
REPLACING VIDEO DOOR PHONE POWER UNIT Ref. 789
AND Ref. 789/1A WITH Ref. 789/5B
REPLACING VIDEO DOOR PHONE POWER UNIT Ref. 789 WITH Ref. 789/1A
The 789/1A power unit can replace the obsolete 789 model.
The terminals correspond as follows:
REPLACING VIDEO DOOR PHONE POWER UNIT Ref. 789 AND Ref. 789/1A WITH Ref. 789/5B
The 789/5B video power unit has the following characteristics:
1) It must be powered at 230 V exclusively.
2) It can only be used in video door phone systems with electronic call system (it only has a PS output, no SN output).
3) It can power only two video door phones in stand-by mode (V2).
4) It can power up to 10 video distributors.
5) It is not provided with a -J output for intercom service.
POWER
OUTPUTS
Ref. 789 Ref. 789/1A
0
0
-
110
230 230
~0
~0
~12 ~12
~A
~A
~B
~B
+6
+6
-6
-6
PS
PS
SN SN
1/~ 1/~
R1
R1
R2
R2
+TC +TC
It can therefore replace the Ref. 789 and Ref. 789/1A power units only in systems with the characteristics and limitations above.
In these cases, the terminals correspond as follows:
SV102-1814B
MAINS ~
MAINS ~
VOLTAGE
UNIT
ELECTRONIC
UNIT
6 −−−− sec.1f DOOR PHONE - VIDEO DOOR PHONE SYSTEMS: Installation Diagrams
AP
SE1
SE2
+6J
-J
AP
SE1
SE2
+6J
-J
POWER SUPPLY
Ref.789/5B
(230V)
POWER SUPPLY
Ref.789(230V)
Ref.789/1
(110/230V)