HA243821
Issue 5 Mar 98
Section 2
Page 2 - 5
MODEL 346 INSTALLATION AND OPERATION MANUAL
2.3 ELECTRICAL INSTALLATION
All electrical connections are made at the rear of the recorder case. In order to gain access to the terminals, the
rear terminal cover has to be removed by gently prising it off with a small screwdriver or similar blade. With the
cover removed, the rear terminal panel is revealed as depicted in figure 2.3, which shows the complete range of
channel input and option terminations.
CAUTION
THE TERMINATION OF WIRING TO THE RECORDER DEPENDS ON THE NUMBER OF CHANNELS AND
OPTIONS FITTED TO THE RECORDER. THE DEFINITION OF ‘AS-SHIPPED’ CONNECTIONS IS GIVEN ON
A LABEL LOCATED ON THE INSIDE OF THE REAR TERMINAL COVER OF THE RECORDER.
CAUTION
DAMAGE WILL BE CAUSED TO THE TERMINALS IF THE TERMINAL SCREWS ARE OVER-TIGHTENED.
THE RECOMMENDED MAXIMUM TORQUE IS 0.4Nm.
Figure 2.3 Rear terminal panel connections
Ch 1 -
+
RFI
Grounding
Ch 2 -
+
Ch 3 -
+
L
N
Mains cable
clamp
NO CMN NC
NO CMN NC
RY 06
RY 05
NO CMN NO
NO CMN NC
RY 04
RY 03
NO CMN NC
NO CMN NC
RY 02
RY 01
6
5
4
C
3
2
1
Contact input terminals
Option card terminals
Communnications
connector (if fitted)
For ac supply: N = Neutral; L = Line
For dc supply, N is labelled -; L is la
24V ac supplies must be isolated;
24V dc supplies must be isolated OR negative earth.
If not, the recorder fuse will rupture and any residual current device in the circuit will trip.
SAFETY EARTH
CONNECTION TO
BE MADE HERE
Ch 4 -
+
RFI
Grounding
Ch 5 -
+
Ch 6 -
+
Note...Use of 2.5mm
2
cable is recommended for supply (mains) voltage wiring
