·Some details are not shown. Please refer to specification sheets for all information.

MXAB

Plug-in Signal Conditioners MX-UNIT

ANALOG BACKUP STATION
(front configurable)

Functions & Features
• Manipulates control signals from a computer or DCS
• Manual control in case of computer/DCS failure
• Restarts at the last stored value before power failure
• Ramp rate adjustable
• Isolation between input and output
Typical Applications
• Computer and DCS backup applications
• Used as manual-auto controller
 

MODEL: MXAB–[1][2]–[3][4]

ORDERING INFORMATION
• Code number: MXAB-[1][2]-[3][4]
Specify a code from below for each of [1] through [4].
  (e.g. MXAB-S1V1-M2/Q)
• Specify the specification for option code /Q
  (e.g. /C01/S01/SET)

[1] INPUT
Voltage
S1: Range -1 – + 1 V DC (Input resistance 100 kΩ min.)
S2: Range -10 – +10 V DC (Input resistance 1 MΩ min.)
S3: Range -30 – +30 V DC (Input resistance 1 MΩ min.)

[2] OUTPUT
Current
Z1: Range 0 – 20 mA DC (Load resistance 600Ω max.)
Voltage
V1: Range -1 – +1 V DC (Load resistance 1000Ω min.)
V2: Range -10 – +10 V DC (Load resistance 10kΩ min.)

[3] POWER INPUT
AC Power
M2: 100 – 240 V AC (Operational voltage range 85 – 264 V,
 47 – 66 Hz)
DC Power
R3: 12 – 24 V DC
(Operational voltage range 10.8 - 26.4 V, ripple 10 %p-p max.)
P: 110 V DC
(Operational voltage range 85 – 150 V, ripple 10 %p-p max.)

[4] OPTIONS
blank: none
/Q: With options (specify the specification)

SPECIFICATIONS OF OPTION: Q (multiple selections)
COATING (For the detail, refer to M-System's web site.)
/C01: Silicone coating
/C02: Polyurethane coating
/C03: Rubber coating
TERMINAL SCREW MATERIAL
/S01: Stainless steel
EX-FACTORY SETTING
/SET: Preset according to the Ordering Information Sheet
 (No. ESU-1747)

RELATED PRODUCTS
• Resistor module (model: REM)
• Soft-Terminal (model: ST/STL)

GENERAL SPECIFICATIONS
Construction: Plug-in
Connection: M3.5 screw terminals
Screw terminal: Chromated steel (standard) or stainless steel
Housing material: Flame-resistant resin (black)
Isolation: Input to output to power
Ramp rate adjustment (MAN mode only): Approx. 1 – 999 sec.
Programming: Via front keys
• Scaled range
• Moving average
• Response time
• Trace back mode
• Initial value, Hi, Lo
• etc.
Refer to the instruction manual for detailed information.
DISPLAY
LED
: 8 mm (.31”) 7 segment, red
Number of display digits: 4 digits for DATA display; 2 digits for ITEM display
Scaling: -9999 to 9999
PV indication: Output signal in engineering unit
Overrange indication: LEDs blinking
Power saving mode: Displays turn off if the keys are untouched for a preset time period
LEDs: Red; the PL1 turns on with negative polarity, the PL2 turns on at MANUAL mode, the PL3 turns on when UP signal on at MANUAL mode, the PL4 turns on when DOWN signal on at MANUAL mode.

INPUT SPECIFICATIONS
DC Input from the computer
Code S1
: -1.00 – +1.00 V DC
  Operational range: -1.15 – +1.15 V DC
  Minimum increment: 10 mV
Code S2: -10.0 – +10.0 V DC
  Operational range: -11.5 – +11.5 V DC
  Minimum increment: 100 mV
Code S3: -30.0 – +30.0 V DC
  Operational range: -34.5 – +34.5 V DC
  Minimum increment: 100 mV
Notes:
-Set to the 100 % input voltage a larger value than that to the 0 % input voltage.
-Operational range is of -15 to +115 % or as indicated above.
Default setting:
  Code S1: -1.00 – +1.00 V DC
  Code S2: -10.0 – +10.0 V DC
  Code S3: -30.0 – +30.0 V DC
Contact Input: TTL level (5V-CMOS level) or open collector/dry contact (detecting voltage: approx. 5 V, saturation voltage: ≤ 1 V, sink current: 0.5 mA)
Stop signal (input from the computer):
Switches AUTO/MAN modes.
UP/DOWN signals (input from the Soft-Terminal): Controls the analog output in MAN mode.

OUTPUT SPECIFICATIONS
DC Current: 0.0 – 20.0 mA DC
Operational range: 0.0 – 24.0 mA DC
Minimum increment: 0.1 mA
Default setting: 4.0 – 20.0 mA DC
DC Voltage
Code V1: -1.00 – +1.00 V DC
  Operational range: -1.15 – +1.15 V DC
  Minimum increment: 10 mV
Code V2: -10.0 – +10.0 V DC
  Operational range: -11.5 – +11.5 V DC
  Minimum increment: 100 mV
Note: Set to the 100 % output with a larger value than the
0 % output value.
Default setting: 
  Code V1: -1.00 – +1.00 V DC
  Code V2: -10.0 – +10.0 V DC

INSTALLATION
Power consumption
AC: Approx. 10 VA
DC: Approx. 3.5 W (150 mA at 24 V)
Operating temperature: -5 to +55°C (23 to 131°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: 450 g (0.99 lb)

PERFORMANCE in percentage of max. span
Accuracy: Input + output
  Input: ±0.05 %
  Output: ±0.05 %
Min. span required to ensure the accuracy:
20 % of the nominal I/O range
Display accuracy: Input accuracy ±1 digit
(with 0.0 – 100.0 scaling)
Temp. coefficient: ±0.015 %/°C (±0.008 %/°F)
Response time: Approx. 0.5 to 100 sec. in AUTO (0 – 90 % ) (with front key)  
Approx. 1 – 999 sec. variable in MAN (0 – 100 %)
Output memory at power OFF: E2PROM (non-volatile memory)
Line voltage effect: ±0.1 % over voltage range
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 2000 V AC @1 minute  (input to output to power to ground)

STANDARDS & APPROVALS
EU conformity:
EMC Directive 
  EMI EN 61000-6-4
  EMS EN 61000-6-2
Low Voltage Directive 
  EN 61010-1
  Installation Category II
  Pollution Degree 2
  Input to output to power: Basic insulation (300 V)
RoHS Directive

EXTERNAL VIEW

Refer to the instruction manual for detailed procedures.

CONNECTION EXAMPLES

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

FUNCTIONS

SYSTEM CONFIGURATION EXAMPLES

MG Co., Ltd.