M-system MXCB-1 Manuale utente
MODEL: MXCB
MXCB SPECIFICATIONS ES-1745 Rev.6 Page 1/6
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)
80
(3.15)
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.)
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.
MODEL: MXCB
MXCB SPECIFICATIONS ES-1745 Rev.6 Page 2/6
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
Display accuracy: Accuracy ±1 digit
(with 0.0 – 100.0 scaling)
Temp. coefficient: ±0.015 %/°C (±0.008 %/°F)
Accuracy: ±0.1 %
Min. span required to ensure the accuracy: 20 % of the
nominal output range
Response time: Approx. 1 – 999 sec. variable (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
EN 50581
MODEL: MXCB
MXCB SPECIFICATIONS ES-1745 Rev.6 Page 3/6
EXTERNAL VIEW
PL4
PL3
PL2
PL1
DATA
ITEM
DATA
ITEM
ITEM No. Display
DATA UP-DOWN Keys
ITEM No. UP-DOWN Keys
DATA Display
DOWN LED
UP LED
STOP LED
Polarity LED
Refer to the instruction manual for detailed procedures.
CONNECTION EXAMPLES
■Used Independently
+
AUTO OUTPUT (↑)
AUTO OUTPUT (↓)
(–) OUTPUT
(+) OUTPUT
COMPUTER FAILURE
9
10
11
5
6
2
1
3
4
POWER
7
8
–
+ –
+ –
E/P 4 – 20mA DC
MXCB
FIELD
CONTROL VALVE FLOWMETER
COMPUTER
PANEL
FRONT BACK
UP
DOWN
FEEDBACK
SIGNAL
STOP
MODEL: MXCB
MXCB SPECIFICATIONS ES-1745 Rev.6 Page 4/6
■Used in Combination with ST/STL
+
UP
DOWN
MANUAL CONTROL
AUTO
1
2
3
4
5
6 (+)
7 (–)
8
9
10
AUTO-MANUAL
SELECTOR
SWITCH
OUTPUT
INDICATOR
MONITOR
TERMINALS
(4 – 20mA DC)
10-pin
CONNECTOR
MANUAL OUTPUT (↑)
MANUAL OUTPUT (↓)
COM.
(–) OUTPUT
(+) OUTPUT
COMPUTER FAILURE
9
10
11
5
6
2
1
3
4
POWER
7
8
–
+ –
+ –
E/P 4 – 20mA DC
FEEDBACK
SIGNAL
ST/STL MXCB
FIELD
CONTROL VALVE FLOWMETER
COMPUTER
PANEL
FRONT BACK
STOP
UP
DOWN
AUTO OUTPUT (↑)
AUTO OUTPUT (↓)
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)
80 (3.15)
50 (1.97) 103 (4.06)
132 (5.20)
20
(.79)
• When mounting, no extra space is needed between units.
5678
21
1110
[3.3 (.13)]
80 (3.15)
40 (1.57)
50 (1.97)
7.8 (.31)
CLAMP
(top & bottom)
DIN RAIL
35mm wide
2
–
4.5 (.18) dia.
MTG HOLE
25 (.98) deep
11
–
M3.5
SCREW
39
4
MODEL: MXCB
MXCB SPECIFICATIONS ES-1745 Rev.6 Page 5/6
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM
Isolation
1
7U(+)
V(–)
8
POWER
+
–
OUTPUT
2
D/A
Converter
Digital
Computation
Base Socket
DATA
ITEM
5
3
4
10
11
UP 9
From SOFT-TERMINAL
DOWN
COM
STOP
From COMPUTER
6
UP
DOWN
COM
Control Input Circuit
Effective only
in MAN mode
FUNCTIONS
COMMAND TERM. SIGNAL STATUS
UP 3 – 6 1 0 0 1 – – – –
Computer DOWN 4 – 6 0 1 0 1 – – – –
STOP 5 – 6 1 1 1 1 0 0 0 0
ST/STL UP 9 – 11 – – – – 1 0 0 1
DOWN 10 –11 – – – – 0 1 0 1
Output of the MXCB 1 – 2 ↑ ↓ H H ↑ ↓ H H
[Keys] 1 : ON 0 : OFF – : ON or OFF
H : Hold↑: Increase↓: Decrease
• MXCB Used Independently
In normal operating mode, the MXCB responds to UP/DOWN signals
from the computer in the preset ramp rate. If the computer fails, this will
be detected as a “STOP” command and output will be held at the value
prior to the breakdown. You can increase the output signal by closing
across the terminals 9 – 11,
and decrease it by closing 10 – 11. The output
responds
in the preset ramp rate.
• MXCB Used in Combination with ST/STL
In normal operating mode, the MXCB responds to UP/DOWN signals
from the computer in the preset ramp rate. If the computer fails, the
“STOP” command will override computer output and put the unit in the
manual operation mode by the ST/STL. Using the top-mounted UP or
DOWN key, output can
be increased or decreased in the preset ramp rate.
Output signal value can be read on the top-mounted indicator.
For more precise control, use the monitor terminals. Also the computer
input can be overridden with the AUTO/MANUAL selector on the
Soft-Terminal. This is useful when you need to change the output quickly
during automatic operation by the computer control.
DEFAULT SETTING
MODEL: MXCB
MXCB SPECIFICATIONS ES-1745 Rev.6 Page 6/6
SYSTEM CONFIGURATION EXAMPLES
Analog Control Using Contact Closure Outputs from a Computer
• MXCB Independently • MXCB – ST/STL Combination
Employing an Analog Controller in a DDC Control Loop
• MXCB – ST/STL Combination
Remote Control of an I/O Positioner with
Switches
Control Loop with Multiplex Transmission
E
/
P
MX
COMPUTER
Control Valve
E
/
P
MX
COMPUTER
Control Valve
Computer
Backup Sta.
<
MXCB
>
Computer
Backup Sta.
<
MXCB
>
Soft-Terminal
<
ST
>
E
/
P
COMPUTER
Control Valve Flowmeter
MX
Computer
Backup Sta.
<
MXCB
>
Soft-Terminal
<
STL
>
Controller
E
/
P
MX
REMOTE I / O
Control Valve
Computer
Backup Sta.
<
MXCB
>
E
/
P
MX
Control Valve
<MXCB>
E
/
P
MX
Control Valve
COMPUTER
*
*
**
Flowmeter
Flowmeter
Flowmeter
SYSTEM BUS
<MXCB>
E
/
P
MX
Control Valve
Computer
Backup Sta.
<
MXCB
>
Indicator
CLOSE OPEN
Specifications are subject to change without notice.
Questo manuale è adatto per i seguenti modelli
2
Indice
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