GE Series 90-30 PLC

E-4 Series 90-30 PLC Installation and Hardware Manual – August 2002 GFK-0356Q
E
Installation
The Isolator is packaged in a contoured plastic enclosure designed for either direct attachment to a
serial port or through a 12” extender cable for panel mounted applications
.
Two M3 thumbscrews
secure the device to its mating connector. The device can be easily inserted into an existing
communication channel with no additional hardware
.
In Figure E-2, the Isolator is shown
connected directly to a CPU module. Alternatively, the Isolator can be mounted separately from the
PLC system using the extender cable provided. For mounting separately to a panel, you will need
to provide two #6-32 (4 mm)mounting screws (Figure E-3).
When installing the Isolator, tighten the connector screws and panel mounting screws (if used) to
the following torque values:
Screws Type Torque
Connector Thumbscrews (supplied with
Isolator)
M3 8 in./lbs. (0.9 Newton-meter)
Panel Mounting Screws (user-supplied) #6/32 (4 mm) 12 in./lbs. (1.4 Newton-meters)
PS
CPU
CPU
4000 ft
SNP
Cable
RS-485 Port
Isolator
PLC 1
PLC 2
PS
Figure E-3. RS-485 Port Isolator in PLC Network
TOP
VIEW
Multidrop Switch
#6-32 (4 mm) screw
#6-32
(
4 mm
)
screw
Figure E-4. Mounting Port Isolator to Panel