Version 0.1
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Batteryless telephone system with public address mode BLTS-1006
Table 4 – Colours of globe types
Signaling unit
type
Globe colour
Red
Orange
White
(transparent)
Green
Blue
RL
+
+
-
+
+
AL
+
+
+
+
+
L
+
+
+
+
+
«+» - colour is available.
«-» - colour is not available.
2.2.4.2
Relay unit
Relay unit RBWSB type is manufactured in impact-resistant plastic casing, wall
mounted; may be installed on open deck. Received control signal actuates contacts which
close input power circuits (220 V – for RBWSB-220, or 24 V – for RBWSB-24) on sig-
naling unit circuit.
Cables are led through cable glands. Relay unit is equipped with call reset button,
call LED, and three parallel ports to connect signaling units and ensure signaling in three
modes (2.1.4). Settings of call mode are carried out using jumpers JP1 and JP2 on the
device board according to Table 5.
Table 5 – Settings of relay unit modes
Jumper
Set / not set
Function
JP1
set
call signaling lasts unless «Reset call» button is pressed
JP2
set
call signaling lasts for 10 sec after call is finished
JP1, JP2
not set
call signaling lasts unless calling user finishes the call
JP1, JP2
set
call signaling lasts unless «Reset call» button is pressed
2.2.5
Power supply units
PSUs PS-103, PS-103-20 types are manufactured in painted metal casings, wall
mounted. PSUs supply unregulated voltage 24 V DC to telephones and сommutator tel-
ephones.
PSUs may connect max. three (for PS-103) and four loads (for PS-103-20).
Electrical diagram of PSU includes a switcher, stepdown transformer, rectifier with filter,
current overload protection device (fuse – for PS-103 and automatic circuit breaker –
