M-system MXCB-1 Manual

Plug-in signal conditioners

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Plug-in Signal Conditioners MX-UNIT
COMPUTER BACKUP STATION
(front configurable)
Functions & Features
• Manipulates/holds analog signals via contact input from a
computer
• Manual control available by the 'Soft-Terminal'
indicator/controller (model: ST/STL).
• Restarts at the last stored value before power failure
Typical Applications
• Computer and DCS backup applications
• Used as manual controller
• Valve/damper control with ON-OFF signals
50
(1.97)
132
(5.20)
mm (inch)
MODEL: MXCB–[1]–[2][3]
ORDERING INFORMATION
• Code number: MXCB-[1]-[2][3]
Specify a code from below for each [1] through [3].
(e.g. MXCB-V1-M2/Q)
• Specify the specification for option code /Q
(e.g. /SET)
[1] 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.)
[2] 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.)
80
(3.15)
P: 110 V DC
(Operational voltage range 85 – 150 V, ripple 10 %p-p max.)
[3] OPTIONS
blank: none
/Q: With options (specify the specification)
SPECIFICATIONS OF OPTION: Q
EX-FACTORY SETTING
/SET: Preset according to the Ordering Information Sheet
(No. ESU-1745)
RELATED PRODUCTS
• Soft-Terminal (model: ST/STL)
GENERAL SPECIFICATIONS
Construction: Plug-in
Connection: M3.5 screw terminals
Housing material: Flame-resistant resin (black)
Isolation: Input to output to power
Programming: Via front keys
• Scaled range
• 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
INPUT SPECIFICATIONS
■ Contact Input: TTL level (5V-CMOS level) or open
collector/dry contact (saturation voltage ≤ 1 V, sink current
0.5 mA)
• UP/DOWN/STOP signals (input from the computer)
UP/DOWN signal: Increases/decreases the analog output.
STOP signal: Switches AUTO/MAN modes.
• UP/DOWN signals (input from the Soft-Terminal):
Controls the analog output in MAN mode.
MXCB SPECIFICATIONS
MODEL: MXCB
ES-1745 Rev.6 Page 1/6

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Summary of Contents for M-system MXCB-1

  • Page 1 MODEL: MXCB P: 110 V DC Plug-in Signal Conditioners MX-UNIT (Operational voltage range 85 – 150 V, ripple 10 %p-p max.) COMPUTER BACKUP STATION [3] OPTIONS (front configurable) blank: none Functions & Features /Q: With options (specify the specification) • Manipulates/holds analog signals via contact input from a computer •...
  • Page 2: Output Specifications

    MODEL: MXCB Input to output to power – Basic insulation (300 V) OUTPUT SPECIFICATIONS RoHS Directive ■ DC Current: 0.0 – 20.0 mA DC EN 50581 Operational range: 0.0 – 24.0 mA DC Minimum increment: 0.1 mA Default setting: 4.0 – 20.0 mA DC ■...
  • Page 3: External View

    MODEL: MXCB EXTERNAL VIEW DATA DATA Display ITEM ITEM No. Display Polarity LED STOP LED ITEM DATA UP LED DATA UP-DOWN Keys DOWN LED ITEM No. UP-DOWN Keys Refer to the instruction manual for detailed procedures. CONNECTION EXAMPLES ■ Used Independently COMPUTER FEEDBACK SIGNAL...
  • Page 4 MODEL: MXCB ■ Used in Combination with ST/STL COMPUTER FEEDBACK SIGNAL + – ST/STL MXCB MANUAL OUTPUT (↑) MANUAL CONTROL DOWN MANUAL OUTPUT (↓) AUTO-MANUAL COM. SELECTOR AUTO SWITCH COMPUTER FAILURE 6 (+) (–) OUTPUT OUTPUT POWER 7 (–) INDICATOR (+) OUTPUT MONITOR AUTO OUTPUT (↑)
  • Page 5 MODEL: MXCB SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM Isolation From COMPUTER Digital Computation Converter OUTPUT – DOWN DATA STOP ITEM From SOFT-TERMINAL DOWN 7 U(+) POWER Effective only V(–) in MAN mode Base Socket FUNCTIONS DEFAULT SETTING • MXCB Used Independently In normal operating mode, the MXCB responds to UP/DOWN signals COMMAND TERM.
  • Page 6: System Configuration Examples

    MODEL: MXCB SYSTEM CONFIGURATION EXAMPLES Analog Control Using Contact Closure Outputs from a Computer Employing an Analog Controller in a DDC Control Loop • MXCB Independently • MXCB – ST/STL Combination • MXCB – ST/STL Combination COMPUTER COMPUTER COMPUTER Soft-Terminal Soft-Terminal <...

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