GE VersaMax Manual page 309

10
IC200ALG240
Analog Input Module, 16 Bit Voltage/Current, 1500VAC Isolation, 8 Channels
Cable Shield Connections
If possible, analog input channel connections should be grounded at the source device. If
that is not possible, the cable shield must be grounded at the I/O module.
If the module is installed on a Terminal-style I/O Carrier (IC200CHS001, 002, or 005) or
a Compact Terminal-style I/O Carrier (IC200CHS022 or 025), the cable shield can be
connected directly to the carrier per the Field Wiring Table. An Auxiliary I/O Terminal
Strip (IC200TBM001, 002, or 005) can also be added to the Terminal-style I/O Carriers to
aid in grounding shields. If the module is installed on a Compact Terminal-style I/O
Carrier (IC200CHS022, 025), shield connections can be made on an Auxiliary I/O
Terminal that is mounted near the I/O carrier. Be sure to ground the Auxiliary I/O
Terminal Strip as well if you plan to use it for this purpose.
If the module is installed on a Connector-style I/O Carrier (IC200CHS003), the cable
shield can be connected directly to an Interposing Terminal (IC200CHS011, 012, 015). Be
sure to ground the Interposing Terminal. It is recommended to use a shielded interposing
cable as well between the Interposing Terminal and the Connector Base. A custom
shielded cable can be made using the Connector kit (IC200ACC302). In addition, a
custom shield braid can be wrapped around standard Interposing Cables (IC200CBL105,
110, 120, 230). If this approach is used be sure to ground the braid.
Operation
The default parameters of this module can be used in many applications. The module can
be software-configured when it is installed in a VersaMax PLC system, or an I/O Station
controlled by a Network Interface Unit that is version 2.0 or above. The module is
configured at startup. If the module is autoconfigured, it will operate with its default
features. After configuration, the module begins receiving signals from the input devices
connected to it.
Calibration
The module is calibrated at the factory. For most applications, no further calibration is
required. It is possible to perform recalibration in either of the following ways:
By changing a module's scaling so its scaled data agrees with metered values.
By sending the module a recalibration message as described in the PLC User's Manual.
Note that the module must be power cycled when reverting from field calibration back
to factory calibration.
10-12 VersaMax® Modules, Power Supplies, and Carriers User's Manual – March 2003 GFK-1504K