LDM-1000 Datasheet, PDF (1/3 Pages) TE Connectivity Ltd – LVDT/RVDT Signal Conditioning Module

FEATURES
 Standard DIN rail form factor
 Voltage and current output signals
 Phase correction
 Status LED’s for power and loop
integrity
 Multiple LVDT master/slave
capability
APPLICATIONS
 Gas and steam turbine control
systems
 Process control systems
 Reeler/dereeler control systems
 Automotive test track
instrumentation
 Paper head box control
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.
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.
The LDM-1000 also provides several different input/output
options to accommodate varying PLC and analog I/O
requirements:
 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.
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
Page 1