User manual
1
11 May, 2006 DMC-A2 Series (ALD-00029)
Macro Sensors Tel. (856) 662-8000
www.macrosensors.com
Input setup mode
• 50 or 60 Hz supply frequency.
• Excitation frequencies:
50 Hz: 1.2, 1.6, 2.4, 3.2, 4.8, 6.4, 8.0,
9.6 kHz excitation.
60 Hz: 1.44, 1.92, 2.88, 3.84, 5.76, 7.68,
9.60, 11.52 kHz excitation.
• Update rates: 1, 4, 10, or 20 readings
per second.
• Independent decimal point position
setting for each channel display with
resolution to 0.00001 of any
engineering unit.
Calibration mode
• Independent calibration for each
channel:
Auto Calibration: 2-point zero and
span setting.
Offset Trim: Independently trim the
zero setting or enter an offset value.
Span Trim: Independently trim the
span setting.
Analog output mode
• Zero setting.
• Full scale setting.
Setpoints mode
• Four independently configured
setpoints with above and below
setpoint value actuation.
DMC-A2 Series
Dual LVDT Controllers
USER MANUAL
Introduction
Specifications
• 1/8 DIN Case
• 6-digit, 0.56” (14.2 mm)
Alphanumeric Display
• 3-button Front Panel Operation
• Intuitive Scrolling Text
Configuration Menus
General
Digital Display: 14-segment alphanumeric, 0.56” (14.2 mm) LEDs.
Display Color: Red (standard). Green or Super-bright Red (optional).
Display Range: -199999 to 999999.
Display Update Rate: 1, 4, 10, or 20 times per second.
Display Dimming: 8 brightness levels. Front panel selectable.
Scrolling Display Text Messaging: Full alphanumeric text
characters supported.
Polarity: Assumed positive. Displays – negative.
Annunciators: 6 red LEDs on front panel; one per setpoint.
Overrange Indication:
Underrange Indication:
Front Panel Controls: PROGRAM, UP and DOWN buttons.
Power Supplies. Standard high voltage AC / DC power supply
85-265 V AC / 95-370 V DC, or optional low voltage AC / DC
power supply 18-48 V AC / 10-72 V DC.
Environmental
Operating Temperature: 0 to 50 ÞC (32 ÞF to 122 ÞF).
Storage Temperature: -20 ÞC to 70 ÞC (-4 ÞF to 158 ÞF).
Relative Humidity: 95% (non-condensing) at 40 ÞC (104 ÞF).
Mechanical
Case Dimensions: 1/8 DIN, 96x48 mm (3.78” x 1.89”).
Case Depth: 137 mm maximum (5.39”).
Case Material: 94V-0 UL rated self-extinguishing polycarbonate.
Weight: 11.5 oz (0.79 lbs), 14 oz (0.96 lbs) when packed.
Approvals
CE: As per EN-61000-3/4/6 and EN-61010-1.
Input Module ISL1
Excitation Voltage: 3 V RMS sine wave, zero DC component THD
<2% (1.2 kHz).
Excitation Frequency: x 16 selectable frequencies available (1.2
kHz to 11.5 kHz). Crystal locked, software driven.
Temperature Coefficient: ± 50 ppm/ ° C of full scale (typical).
Dual LVDT Inputs: 30 k input impedance. Synchronous
demodulation of excitation carrier. >130 db rejection of excitation
carrier.
Frequency Response: 500 Hz (–3 db) low-pass filter.
Analog to Digital: Dual channel ΣΔ A/D convertor approaching
19-bit resolution. Ratiometric operation relative to excitation voltage
magnitude.
Dual Output Rates: Rapid and average response outputs. 1 Hz,
2 Hz, 10 Hz, 20 Hz averaged.
Line Frequency Rejection: 50 / 60 Hz noise rejection.
Relay Output Modules
Plug into carrier board from rear:
Four Relay Module: Available with four 5 A Form A Relays*.
*Form A Relay Specifications: 5 A 240 VAC, 4 A 24 VDC.
Isolation 3000 V. UL and CSA listed.
The DMC-A2 Series are accurate,
high performance, programmable
dual channel controllers that deliver
precise measurement and control for
applications using LVDT (Linear
Variable Differential Transformer)
inputs.
The 6-digit alphanumeric LED
display provides easy to follow setup
prompts for all LVDT parameters
using the following intuitive scrolling
text configuration menus.
Options
• Relays
Standard: Four 5 amp relays.
• Analog Output
Standard: Fully scalable from 0/4
to 20 mA (or reverse).
Options: Single 0 to 10 V DC (or
reverse) or dual 0 to 10 V DC.
Advanced Functions
A range of built-in measurement and
control functions are available with
the DMC-A2 Series controllers’
resident operating system that can
also be programmed from the front
panel. These include:
• Linearization. Up to four 32-point
flexible linearization tables or a
single 125-point flexible table.
• Serial Communications. Optional
single ASCII or Ethernet (TCP/IP)
outputs.
• Differential Measurement.
Differential measurement and
cross channel maths available
(A+B, A–B, AxB, A/B).
Optimize performance and linearity
Select the correct frequency for your sensor