HA243821
Issue 5 Mar 98
Section5
Page 5 - 63
MODEL 346 INSTALLATION AND OPERATION MANUAL
5.9.1 WIRING
SUPPLY VOLTAGE WIRING
With this option fitted, the mains (line) input is no longer applied by the user to the L and N terminals as indicated
in figure 2.3. Mains input is terminated instead, at a terminal block in the rear terminal cover. (The ‘non-user’ side
of the terminal block is supplied already connected to the L and N terminals on the rear panel of the recorder.)
The Safety Earth connection must still be made to the Earth stud as indicated in figure 2.3.
FUSES
The value of the 20 mm. anti-surge fuse varies according to the supply voltage, as shown in the table below.
SIGNAL WIRING
Signal wiring for a typical channel is shown below.
Supply
Voltage
110/120
220/240
Fuse
value
Fuse part
Number
100 mA
63 mA
CH050012
CH050630
Black
Black
Black
Red
Red
Red
+
Transmitter
+
-
Other transmitters
+
Channel input
+
+
Only one channel
shown, for clarity.
Long terminal cover
Recorder rear
terminal panel
User terminal block
Shunt
Transmitter Power Supply
PCB
-
Figure 5.9.1 Transmitter power supply signal connections