nx3a1x-nexus0 pages

NX3A1X Specifications Rev 1.0
Networked Resolver PLS Module

Module Overview
This AMCI Nexus module is a single resolver input programmable limit switch module that
communicates on a network. The available networks, along with the corresponding AMCI part
numbers, are shown in the following table.
Network
ControlNet
DeviceNet
Ethernet
Profibus
Modbus TCP/IP

Part Number
NX3A1C
NX3A1D
NX3A1E
NX3A1P
NX3A1T

Each module accepts a brushless resolver based transducer for position feedback and generates up to 16
limit switch outputs based on the transducers’ position and velocity. The NX3A1X module has several
modes of operation that allow you to enable or disable the outputs based on discrete inputs and the
speed of the machine.
The NX3A1X module has two modes of operation, Independent Mode and Group Mode. While in
Independent Mode, each output is independent of the others and has a corresponding input that is
ANDed with the output. When in Group Mode, the outputs are combined into groups. The NX3A1X
module has a maximum of six groups. Each group is assigned an Operating Mode that controls how the
outputs fire. At this time, there are a total of seven Operating Modes. These Operating Modes are
geared towards high speed packaging and assembly machines.
This unit has sixteen I/O points. Eight of the outputs and all sixteen inputs are located on the Nexus
module itself, and the remaining eight outputs can be located on an external relay board.
The inputs can be programmed to be used either high true or low true, and provide ANDing functions
and group control. The inputs are divided into two groups of eight, and can be used as either sinking or
sourcing inputs. The status of the 16 inputs is also reported over the Network.
Each of the outputs has 8 On/Off setpoints, and can be programmed to operate in normal, timed, or
pulse mode. The outputs can be ANDed with an input or with a motion detector, and can also be forced
ON or OFF from the PLC. The outputs will turn off when there is a transducer fault condition, even if
it is a clearable transducer fault. The status of the 16 outputs is reported to the PLC over The Network.
Outputs should not be programmed on the fly.
The module contains a non-volatile memory so all of the setup data and On/Off setpoints will be saved
on power down. Because the non-volatile memory is a battery backed RAM, all of the parameters can
be changed often without damaging the module.

20 Gear Drive, Plymouth Industrial Park, Terryville, CT 06786
Tel: (860) 585-1254 Fax: (860)584-1973 E-mail: sales @amci.com

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