LDM-1000
LVDT/RVDT Signal Conditioning Module
SPECIFICATIONS
10 to 30VDC operation
Standard DIN rail form factor
4 to 20mA and VDC outputs
Zero, span and phase adjustable
2.5, 5 and 10kHz excitation frequencies
Low noise, 3-pole Butterworth filter
Master/slave capability
Compatible with 4, 5 & 6-wire LVDTs/RVDTs
Works with very low input impedance LVDTs and
RVDTs
The LDM-1000 is an extremely versatile and popular
LVDT/RVDT signal conditioning module and the perfect choice
for industrial applications requiring the DIN standard rail mount.
The LDM-1000 provides everything you will need for accurately
interfacing an AC operated Linear or Rotary Variable
Differential Transformer to your industrial position control
system.
FEATURES
Standard DIN rail form factor
Voltage and current output signals
Phase correction
Status LED’s for power and loop
integrity
The LDM-1000 was designed with maximum sensor/system
compatibility in mind. A wide range of gains, excitation voltages
and frequencies ensure compatibility with virtually all LVDT and
RVDT type transducers. A full-wave synchronous demodulator
eliminates quadrature and harmonics to maximize external
noise rejection.
Multiple LVDT master/slave
capability
APPLICATIONS
The LDM-1000 also provides several different input/output
options to accommodate varying PLC and analog I/O
requirements:
Gas and steam turbine control
systems
Single-ended voltage outputs with the use of 100%
zero suppression to maximize the sensor stroke
utilization while simplifying programming (no need to
deal with sign)
Bipolar voltage output to maximize A/D bit usage with
most PLC analog input modules, for applications
requiring high resolution
4-20mA current output for applications requiring long
signal runs or where noise immunity may be an issue.
The 4-20mA loop is driven by an internal power supply,
provided by the LDM-1000.
Process control systems
Reeler/dereeler control systems
Automotive test track
instrumentation
Paper head box control
Finally, the frequency response is internally selectable and so
is the master/slave function which allows synchronization of
multiple LDM-1000 modules to prevent beat frequencies and
cross talk between transducers.
SENSOR SOLUTIONS /// LDM-1000 Rev 8
1/2016
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