Innotech Genesis V4 System - Manual (Page 42)

Installation Instructions for Innotech Genesis Systems
Edition 011100 3-16
or to terminate cable screens. Terminal 2 is the GND terminal for the analogue signal to the
controller; the cable screen and the screens from the four local analogue inputs should
terminate at this point. Terminal 3 connects to the appropriate
+
analogue input terminal on
the controller. The exact input terminal on the controller is indicated on the computer-
generated wiring diagram.
Analogue input terminals for the AIM are listed in Table 3-9.
Table 3-9. Analogue Input Module Input Signal Connections.
TERMINAL SIGNAL TERMINAL SIGNAL
ACTIVE REFERENCE
A AI1+ B AI1
−
C AI2+ D AI2
−
E AI3+ F AI3
−
G AI4+ H AI4
−
Particular care must be exercised in protecting the analogue signals from electromagnetic
interference of all types and in ensuring the proper termination of analogue cable screens.
Screens of input and output analogue signal cables and the analogue signal return lead to
the controller should be tied together at Terminal 2. Screening integrity must be maintained
at the input terminals of the module and not at entry points to the enclosure or at universal
terminal strips. Figure 3-7 provides an example of cable screen termination for an
installation containing two Analogue Input Modules and a Genesis II Digital Controller.
Figure 3-7. Analogue Input Module Wiring, Example.
1 2 3
A B C D E F G H I J
1 2 3
A B C D E F G H I J
A.I.M. #1 A.I.M. #2
LEM
RIBBON CABLE
TO
OTHER
LEMs
GENESIS II
DIGITAL CONTROLLER
SCREENS
TERMINALS
ANALOGUE INPUTS
32 33 34 35 36 19 20 21