AMCI NEXUS NX2A4E2, User Manual

Page: 15 / 76

20 Gear Drive, Plymouth Ind. Park, Terryville, CT 06786

Tel: (860) 585-1254 Fax: (860) 584-1973 http://www.amci.com
NX2A4E2 User Manual
NX2A4E2 I
NTRODUCTION
15
Specifications
Sensor Type
Resolver Transmitters and similar sensors with
sine/cosine stator outputs such as variable

reluctance transducers.
Measurement Method
Ratiometric. Compensates for, and eliminates,
most sources of error, including phase shift,
voltage drift, electrical noise, and temperature
changes.
Number of Input Channels
Four. The NX2A4E2 can interface with four inde-
pendent single resolver transducers, two dual
resolver transducers, or a mix of two single
resolver transducers and one dual resolver trans-
ducer
Number of I/O Words (16 bits each)
21 input words and 10 output words
Transducer Input Isolation
Transformer Isolated
Position Resolution
13 bit (8,192) maximum per turn for single
resolver transducers.
12 bit (4,096) maximum per turn for AMCI

100 and 180 turn dual resolver multi-turn

transducers.
409.6 maximum counts per turn for AMCI

1,000 and 1,800 turn dual resolver multi-turn

transducers.
10 bit (1,024) maximum per turn for foreign dual
resolver multi-turn transducers.
Position Update Time
200 microseconds
Tachometer Resolution
1 RPM
Tachometer Update Time
Programmable to 24 or 120 milliseconds
Stop Time Monitor
On board timer measures the time between the on
to off transition of a digital input and the cessa-
tion of movement on transducer channel one.
Channel one must be configured for a single-
turn transducer.
Most commonly used in press applications to mon-
itor brake functionality.
Stop Time Digital Input
10 to 30 Vdc isolated input. Requires 10 mA

minimum to operate
Nonvolatile Memory
EEPROM. Used to store configuration data and
position offsets. 100,000 write cycles minimum.
Physical Dimensions
Width: 5.75 inches
Depth: 3.96 inches w/o mating connectors
Height: 3.04 inches
Additional clearance needed based on mounting
configuration
NX2A4E2 Mounting
DIN rail or panel mount. Kit included with unit
that allows customer to change mounting styles.
DIN channel can be EN 50 002 or EN 50 035.
Input Power
24 Vdc ± 10%, surge to 30Vdc without damage to
unit. Requires 12 watts. (0.5A @ 24Vdc)
Environmental Specifications
Ambient Operating Temperature
............ 32° to 140°F (0° to 60°C)
Storage Temperature
............ -40° to 185°F (-40° to 85°C)
Humidity ............ 0 to 95%, non-condensing
Status LEDs
See Status LEDs starting on page 13.
Connectors
Mating connectors are included with the
NX2A4E2
Connector AMCI Part # Wire Strip Length Min. Tightening Torque
Resolver I/O MS-8 28 - 12 AWG 0.394 inches 4.43lb-in (0.5 Nm)
Digital I/O MS-4 28 - 12 AWG 0.394 inches 4.43lb-in (0.5 Nm)
Power MS-3W 28 - 12 AWG 0.394 inches 4.43lb-in (0.5 Nm)