ES-1732 Rev.10

MXPA

Plug-in Signal Conditioners MX-UNIT

FREQUENCY TRANSMITTER

(front configurable)
Functions & Features
• Converts the output from a pulse-type transducer into a standard process signal
• Sensor excitation
• Field-programmable input frequency
• Easy programming via front UP-DOWN keys
with a help of 4-digit and 2-digit displays
• Linearization
• Averaging non-uniform pulses
• Loop test output
• Isolation up to 2000 V AC
Typical Applications
• Positive displacement flowmeters, turbine flowmeters and vortex flowmeters
• Measures rotation or moving speed of a machine and converts the pulses into analog
signals
• Converts non-uniform pulses from an Oval flowmeter into non-pulsating DC signals

MODEL: MXPA–[1][2]–[3][4]

ORDERING INFORMATION

• Code number: MXPA-[1][2]-[3][4]
Specify a code from below for each of [1] through [4].
(e.g. MXPA-BZ1-M2/Q)
• Specify the specification for option code /Q
(e.g. /C01/S01/SET)

[1] INPUT

A: Open collector
A2: Mechanical contact
B: Voltage pulse
H: Two-wire current pulse
J: RS-422 line driver pulse

[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
R: 24 V DC
(Operational voltage range 24 V ±10 %, 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 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-1732)

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
Linearization: Max. 24 points
Programming: Via front keys
• Input frequency range
• Zero and span
• Low-end cutout
• Averaing non-uniform pulses
• Linearization
• Sensor excitation ON/OFF
• Chattering filter
etc...
(Refer to the instruction manual for details)
Input pulse sensing: Capacitor or DC coupled
Averaging non-uniform input waveforms: Input pulses are divided and then multiplied so that the output pulses are averaged.
Low-end cutout: 0 Hz equivalent output is forced during the low-end cutout; -15 to +115 % adjustable; deadband 1 %
■ 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: Input signal in engineering unit
Overrange indication: LEDs blinking
Power saving mode: Displays turn off if the keys are untouched for a preset time period
Status LEDs: Red; the PL1 turns on with negative polarity, the PL2 with programming error and the PL3 with low-end cutout.
Input LED: Red; the PL4 blinks in synchronization with the input pulse.
Note: LED response takes time when the input decreases from a very high frequency to a low frequency.

INPUT SPECIFICATIONS

Sensor excitation: 5 – 24 V DC ±10 %; 1 V increments (default setting: 5 V): Activated / deactivated via front control keys
Max. current (mA): 600 mW / Excitation voltage (V); 120 mA at 5 V, 50 mA at 12 V, 25 mA at 24 V
Current limit protection: Approx. 330 mA at shortcircuit
(Overcurrent will appear at shortcircuit. If the device cannot withstand the overrcurrent, be sure to turn off the sensor excitation for safety before wiring excitation to the device, and then turn it on after confirming the connection.
The sensor excitation is factory set to ON. Turn it off when not used.)
Frequency ranges: 0 – 0.01 Hz through 100 kHz (up to 10 Hz for mechanical contact)
Minimum pulse width requirements: 4 μsec. for both ON and OFF (Hi and Lo) except for the mechanical contact (40 msec. for ON and OFF)
Note: Minimum increments of 0 % and 100 % input frequency are 1/1000 of each frequency range.
■ Open Collector, Mechanical Contact
Detecting power/current: Approx. 15 V DC @ 1.8 mA
Detecting levels: ≤ 200 Ω / 2.5 V for ON;
≥ 100 kΩ / 4.0 V for OFF
■ Voltage Pulse
Waveform: Square or sine
Input impedance: 10 kΩ minimum
Input amplitude: Min. 0.5 Vp-p, max. 100 Vp-p
Max. voltage between input terminals: 50 V
• DC Coupling
Detecting levels (Manual)
V_H : 1 – 10.0 V (0.1 V increments variable)
V_L : 1 – 10.0 V (0.1 V increments variable)
Max. DC offset voltage: 9.9 V
Or 3 steps automatic setting available.
Automatic:
   Low level: V_L approx. 1.0 V, V_H approx. 1.5 V
   (Recommended input pulse levels: 2 V - 4 Vp-p, max. DC offset voltage: 1.2 V)
   Mid Level: V_L approx. 2.0 V, V_H approx. 2.5 V
   (Recommended input pulse levels: 4 V - 12 Vp-p, max. DC offset voltage: 2.2 V)
   High level: V_L approx. 5.0 V, V_H approx. 6.0 V
   (Recommended input pulse levels: 12 V - 50 Vp-p, max. DC offset voltage: 5.5 V)
(V_H- V_L) is so called hysteresis for detecting level.
V_Hdetects rising edge, V_Ldetects sinking edge.
For manual setting, be sure to set V_H higher than V_L.
(ITEM No. blinks when setting error)
• Capacitor Coupling
Detecting levels
V_H : 1 – 10.0 V (0.1 V increments variable)
V_L : 1 – 10.0 V (0.1 V increments variable)
Max. DC offset voltage: 26 V
Or 1 step automatic setting available.
Automatic: V_L approx. 0.0 V, V_H approx. 0.5 V
With the capacitor coupling, sine or similar waveforms below 20 Hz and/or 1 Vp-p cannot be detected. The capacitor coupling can be used when the detecting levels do not match with DC coupling, such as when the DC offset voltage is ≥ 9.9 V or ≤ 26 V.
■ Two-wire Current Pulse
Input resistance: Receiving resistor 100 Ω
Input range: 0 – 25 mA
Detecting levels: ≥ 13.6 mA for Hi; ≤ 7.2 mA for Lo
■ RS-422 Line Driver Pulse
Receiver: Conforms to RS-422

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. 5.6 VA at 100 V
Approx. 7.6 VA at 200 V
Approx. 9.0 VA at 264 V
•DC: Approx. 5 W (210 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 % (±0.2 % with a sinusoidal
or similar waveform input less than 100 Hz.)
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)
Display accuracy: Input accuracy ±1 digit
(with 0.0 – 100.0 scaling)
Temp. coefficient: ±0.015 %/°C (±0.008 %/°F)
Response time: 0.5 sec. + 1 pulse cycle (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)

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.

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM