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Rockwell Automation Publication 1444-UM001D-EN-P - June 2018
Chapter 1
About the Dynamix 1444 Series Dynamic Measurement Module
The 1444 Series includes the main module (1444-DYN04-01RA) plus three
optional expansion modules. The expansion modules, a tachometer signal
conditioner, a relay module and an analog output module, are configured and
managed from their host “main” module. Therefore configuration of these
capabilities is included in the AOP for the main dynamic measurement
module.
The main module also manages errors that are associated with any expansion
module. The behavior of the expansion modules themselves on the failure of its
host main module, or loss of communication to the main module, can also be
defined.
The module supports the EtherNet/IP communication protocol and includes
two RJ45 Ethernet ports. These ports can be applied as either standard
Ethernet connections, where modules are daisy chained one to the next, or
implemented by using Device Level Ring (DLR).
Main Features
The DYN module offers the following major features:
• Distributed vibration module with direct EtherNet/IP network
connectivity
• Multifunction: configurable for eddy current probes, accelerometers,
velocimeters, and all common dynamic measurement sensors that
output voltages from -24V to +24V DC
• Four measurement channels and two tacho (TTL) circuits
• Transducer supply configurable per channel, as one of:
– Constant Current Mode: +24 V/4 mA
– Constant Voltage Mode: +24 V/25 mA
– Constant Voltage Mode: -24 V/25 mA
• Buffered signal outputs (output current limited)
• Measurement bandwidth up to 20 kHz (4-channels), 40 kHz (2-
channels)
• Digital filtering and signal analysis, including integration
• Supports Spike Energy (gSE) measurements
• Implements HP and LP filters (4-pole Butterworth), with infinitely
variable -3 dB points
• Sophisticated and flexible alarm logic
• Protection alarm checks, typically every 40 ms
• Relay output (SPDT) rated for 30V DC and 250V AC
• FFT analysis capability
• Configurable for specialist measurements such as:
– Rod drop
– Ramp or complementary differential expansion
– Eccentricity
– Absolute shaft vibration