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DM4003
POTENTIOMETER POSITION INPUT
FIELD RANGEABLE TRANSMITTER

FEATURES
bullet100 ohm to 100 kilohm Potentiometer
bulletSelectable Response Time/Filter
bulletProvides a Fully Isolated DC Output Proportional to Wiper Position
bulletUser Write-on Label
bulletUser-Settable Input and Output Ranges
bulletFully Labeled Jumper Positions for Easy Range Settings
bulletPlug-in Terminal Blocks
bulletStandard DIN rail Mount With Easy Snap-on Snap-off
bulletConnections and Ranging Readily Accessible From The Front
bulletChoice of Power Options
bulletPermanent Warranty
bulletUL, cUL Certified


DESCRIPTION

The DM4003 provides an isolated voltage or current output proportional to the position of a potentiometer wiper.

The output is fully isolated from input, line power and ground.  The unit is useful in eliminating ground loops and common mode signals.

Input and output ranges are user-settable. The output response may be normal or reverse-acting. A fully-labeled set of jumpers selects the input and output ranges.

The DM4003 includes selectable filtering and conditioning to reduce susceptibility to transients and noisy operations. It utilizes a feedback VCO to develop a pulse train with a duty cycle proportional to the input signal amplitude. This pulse train is coupled through a pulse transformer to the output circuitry, where the duty cycle data is converted to a proportional DC output level.

Connections are made via two 4-pin plug-in terminal blocks. These terminal blocks allow the product to be removed without unwiring
the connections.

TYPICAL APPLICATIONS

A useful interface for monitoring valve and actuator position, or for generating test signals.

MOUNTING

The module mounts on a standard H-35 DIN rail. A spring latch holds it in place. The module is demounted by using a screwdriver to release the latch. The latch release is accessible at the bottom of the module.

SPECIFICATIONS

INPUT

Input Potentiometer Value
  100 ohm to 100 kilohm

Excitation
  1 VDC

Span Selections for F.S.
  Output (% rotation)
  25%, 50%, 75%, 100%

Offset
  ± 0% to 100% of span

POWER
Wattage 2.5W maximum

AC (Standard)
  115 VAC   ± 10%, 50/60 Hz
  230 VAC   ± 10%, 50/60 Hz
  24 VAC    ± 10%, 50/60 Hz

DC  (Optional)
  24 VDC     (21 to 32 VDC)

ISOLATION
Resistance
  >500 megohms
Voltage Rating
  >1000 VAC sine wave

COMMON MODE REJECTION
>100 dB, DC to 60 Hz

APPROVALS:
UL, cUL Certified

OUTPUT
Voltage
0/.25
0/1
1/5
0/5
0/10
-5/5
-10/10
Current (mA)
0/1
0/4
4/20
0/20

OUTPUT LOGIC
Normal or Reverse Acting

DRIVE CAPABILITY
Voltage 
  5mA
Current 
  >24 V compliance

ACCURACY
±0.1% of span

LINEARITY
±0.1% of span

OUTPUT RIPPLE
<0.1% of full scale
  (peak to peak)

RESPONSE TIME (99%)
2, 20, 50, 500 milliseconds

OPERATING TEMPERATURE
-10 to  60°C
 14 to 140°F

TEMPERATURE STABILITY
±0.01% of span per°C


TERMINAL CONNECTIONS

Power AC L1 or DC +
Power AC L2 or DC -
Potentiometer Excitation
Potentiometer Wiper
Potentiometer Common
Current Supply -
Output +
Output -

(Terminal Labeled)

L1
L2
1
2
3
4
Output +
Output -