ES-2767 Rev.3

M5XREB

Super-mini Terminal Block Signal Conditioners M5X-UNIT

RATIO/BIAS TRANSMITTER

(output bias; PC programmable)
Functions & Features
• Provides precise matching of DC control signals to final control elements in open- or closed-loop systems
• Ratio adjustable from 0.1 to 4.00 or from -0.1 to -4.00; Bias adjustable to ±100 %
• PC programmable
• High-density mounting
• Power LED
Typical Applications
• Ratio control for air/fuel flows or for two flows
• Gain calculation for manipulated variable from a controller
• Large scale signal span adjustment

MODEL: M5XREB-1-R[1]

ORDERING INFORMATION

• Code number: M5XREB-1-R[1]
Specify a code from below for [1].
(e.g. M5XREB-1-R/Q)
• Specify the specification for option code /Q
(e.g. /C01/S01/SET)

INPUT – Field-selectable

◆ DC Input
• Current input: 0 - 50 mA DC
• Voltage input: -1000 - +1000 mV DC
• Voltage input: -10 - +10 V DC

EXTERNAL INTERFACE

◆ OUTPUT SIGNAL
1: DC output (field-selectable)
   • Current output: 0 - 20 mA DC
   • Voltage output: -5 - +5 V DC
   • Voltage output: -10 - +10 V DC

POWER INPUT

DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)

[1] OPTIONS

blank: none
/Q: With options (specify the specification)

SPECIFICATIONS OF OPTION: Q (multiple selections)

COATING (For the detail, refer to our 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-2767)

RELATED PRODUCTS

• PC Configurator cable (model: COP-US)
• PC configurator software (model: M5CFG)
Downloadable at our web site.

GENERAL SPECIFICATIONS

Construction: Terminal block
Connection: M3.5 screw terminals (torque 0.8 N·m)
Screw terminal: Nickel-plated steel (standard) or stainless steel
Housing material: Flame-resistant resin (black)
Isolation: Input to output to power
Ratio adjustment
Proportional: 0.10 to 4.00; 0.01 increments
Inverted: -0.10 to -4.00; 0.01 increments
Bias adjustment: -100 to +100 %; 1 % increments
Equation: X_o = KX_i + B (proportional)
X_o = KX_i + B + 100 % (inverted)
where
  X_o : Output (%)
K : Ratio
      Linear characteristics
      0.1 to 4.00 (proportional)
      -0.1 to -4.00 (inverted)
X_i : Input
B : Bias (-100 to +100 %)
Power indicator LED: Green LED; Blinking patterns indicate different operating status of the transmitter.
Parameters: Stored in non-volatile memory; write/erase cycle endurance: less than 20 000
Programming: Downloaded from PC;
• ratio
• bias
• input type
• input range
• output type
• output range
• zero and span
For detailed information, refer to the users manual for the PC configurator.
Configurator connection: 2.5 dia. miniature jack;
RS-232-C level

INPUT SPECIFICATIONS

Standard default setting: DC current input 4 - 20 mA
■ DC Current
Input resistance: Incorporated (15.5 Ω)
Input range: 0 - 50 mA DC
Measurable range: 0 – 52.5 mA DC
Minimum span: 2 mA DC
Offset: Lower range can be any specific value within the input range provided that the minimum span is maintained.
■ DC Voltage
Input range
• S1: -1000 - +1000 mV DC
• S2: -10 - +10 V DC
Measurable range
• S1: -1100 - +1100 mV DC
• S2: -11 - +11 V DC
Minimum span:
• S1: 100 mV DC
• S2: 1 V DC
Offset: Lower range can be any specific value within the input range provided that the minimum span is maintained.
If not specified, the input range is shown below.
Input resistance
• S1: ≥ 100 kΩ
• S2: ≥ 1 MΩ

OUTPUT SPECIFICATIONS

Standard default setting: DC current output 4 - 20 mA
Output type
• DC current output: 0 - 20 mA DC
• DC voltage output: -10 - +10 V DC
• DC voltage output: -5 - +5 V DC
(3 types can be switched by DIP switch and PC)
■ DC Current: 0 – 20 mA DC
Output range: 0 - 23 mA DC
Minimum span: 1 mA
Load resistance: 550 Ω
■ DC Voltage
• Output range -10 - +10 V DC
Voltage range: -11.5 – +11.5 V DC
  Minimum span: 1 V
  Load resistance: Output drive 1 mA max.
  (ex. 0 - 10 V DC: 10 V ÷ 1 mA = 10 kΩ)
• Output range -5 - +5 V DC
Voltage range: -5.75 – +5.75 V DC
Minimum span: 500 mV
  Load resistance: Output drive 1 mA max.
  (ex. 1 - 5 V DC: 5 V ÷ 1 mA = 5000 Ω)

INSTALLATION

Power consumption: ≤ 1W
Operating temperature: -20 to +65°C (-4 to +149°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Atmosphere: No corrosive gas or heavy dust
Mounting: DIN rail
Weight: 80 g (2.8 oz)

PERFORMANCE in percentage of span

Input accuracy (% of max. input range): ±0.01 %
(±0.02 % for current input)
Output accuracy (% of max. output range): ±0.02 %
(±0.04 % for current output)
Ratio = 1, Bias = 0 % (proportional)
Ratio = -1, Bias = 0 % (inverted)
Temp. coefficient: ±0.0075 %/°C (±0.004 %/°F) of max. span
Response time: ≤ 500 msec. (0 – 90 %)
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)

ACCURACY AND CALCULATION EXAMPLES

■ Overall Accuracy
The accuracy includes input accuracy, which converts the sensor input into a digital value, and output accuracy, which converts the digital value into an analog signal.
The accuracy of the device is the total of the input accuracy and the output accuracy.
Input accuracy
Input accuracy for the setting value span is shown as following formula.
Input accuracy = (input range ÷ input setting value span) × 0.01 %
For current input,
Input accuracy = (input range ÷ input setting value span) × 0.02 %
Output accuracy
Output accuracy for the setting value span is shown as following formula.
Output accuracy = (output range ÷ output setting value span) × 0.02 %
For current output,
Output accuracy = (output range ÷ output setting value span) × 0.04 %
Calculation examples
Ex1: Input 0 - 20 mA, output 4 - 20 mA
Input accuracy = (50 mA ÷ 20 mA) × 0.02 % = 0.05 %
Output accuracy = (20 mA ÷ 16 mA) × 0.04 % = 0.05 %
Accuracy = input accuracy 0.05 % + output accuracy 0.05 % = 0.1 %
Ex2: Input 0 - 10 V, output 0 - 10 V
Input accuracy = (20 V ÷ 10 V) × 0.01 % = 0.02 %
Output accuracy = (20 V ÷ 10 V) × 0.02 % = 0.04 %
Accuracy = input accuracy 0.02 % + output accuracy 0.04 % = 0.06 %

STANDARDS & APPROVALS

EU conformity:
EMC Directive
EMI EN 61000-6-4
EMS EN 61000-6-2
RoHS Directive

EXTERNAL VIEW

Refer to the instruction manual for the setting procedure.

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM