M-system MXCB-1 Bedienungsanleitung

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

(1.97)

132

(5.20)

(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

POWER

–

+ –

E/P 4 – 20mA DC

MXCB

FIELD

CONTROL VALVE FLOWMETER

COMPUTER

PANEL

FRONT BACK

DOWN

FEEDBACK

SIGNAL

STOP

MODEL: MXCB

MXCB SPECIFICATIONS ES-1745 Rev.6 Page 4/6

■Used in Combination with ST/STL

DOWN

MANUAL CONTROL

AUTO

6 (+)

7 (–)

AUTO-MANUAL

SELECTOR

SWITCH

OUTPUT

INDICATOR

MONITOR

TERMINALS

(4 – 20mA DC)

10-pin

CONNECTOR

MANUAL OUTPUT (↑)

MANUAL OUTPUT (↓)

COM.

(–) OUTPUT

(+) OUTPUT

COMPUTER FAILURE

POWER

–

+ –

E/P 4 – 20mA DC

FEEDBACK

SIGNAL

ST/STL MXCB

FIELD

CONTROL VALVE FLOWMETER

COMPUTER

PANEL

FRONT BACK

STOP

DOWN

AUTO OUTPUT (↑)

AUTO OUTPUT (↓)

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)

80 (3.15)

50 (1.97) 103 (4.06)

132 (5.20)

(.79)

• When mounting, no extra space is needed between units.

5678

1110

[3.3 (.13)]

80 (3.15)

40 (1.57)

50 (1.97)

7.8 (.31)

CLAMP

(top & bottom)

DIN RAIL

35mm wide

–

4.5 (.18) dia.

MTG HOLE

25 (.98) deep

–

M3.5

SCREW

MODEL: MXCB

MXCB SPECIFICATIONS ES-1745 Rev.6 Page 5/6

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

Isolation

7U(+)

V(–)

POWER

–

OUTPUT

D/A

Converter

Digital

Computation

Base Socket

DATA

ITEM

UP 9

From SOFT-TERMINAL

DOWN

COM

STOP

From COMPUTER

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

COMPUTER

Control Valve

COMPUTER

Control Valve

Computer

Backup Sta.

MXCB

Computer

Backup Sta.

MXCB

Soft-Terminal

COMPUTER

Control Valve Flowmeter

Computer

Backup Sta.

MXCB

Soft-Terminal

STL

Controller

REMOTE I / O

Control Valve

Computer

Backup Sta.

MXCB

Control Valve

<MXCB>

Control Valve

COMPUTER

Flowmeter

SYSTEM BUS

<MXCB>

Control Valve

Computer

Backup Sta.

MXCB

Indicator

CLOSE OPEN

Specifications are subject to change without notice.

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