·Some details are not shown. Please refer to specification sheets for all information.


Plug-in Signal Conditioners M-UNIT


Functions & Features
• Adds two pulse inputs (counts number of pulses) and converts the pulse rate into convenient engineering unit for display on a totalizing counter or meter
• Various outputs (open collector, voltage pulse, noncontact AC/DC switch, RS-422 line driver pulse)
• Scaling factor is user-programmable by simply setting input and output frequencies via handheld programmer PU-2x
• Output frequency limiter ensures minimum pulse width
Typical Applications
• Positive displacement flowmeters or turbine flowmeters
• Adding flow pulse signals from blender

MODEL: JPS3-[1][2][3][4]-[5][6]

• Code number: JPS3-[1][2][3][4]-[5][6]
Specify a code from below for each of [1] through [6].
  (e.g. JPS3-AP1N-K/Q)
• Use Ordering Information Sheet (No. ESU-1575). Default setting will be used if not otherwise specified.
Factory default setting
Noise filter: None
Input pulse set count: 1
Output pulse set count: 1
Sampling time: 0.1 sec.
Max. output frequency: 10 Hz
One shot output: 50 msec.
• Specify the specification for option code /Q
  (e.g. /C01/S01)

[1] INPUT 1 & 2
A: Open collector
A2: Mechanical contact
B: Voltage pulse (Specify sensitivity)
H: Two-wire current pulse (Specify sensitivity)

A: Open collector (max. 100 kHz)
M: 5 V pulse (max. 100 kHz)
N: 12 V pulse (max. 100 kHz)
P: 24 V pulse  (max. 100 kHz)
J: RS-422 line driver pulse (max. 100 kHz)
R: Noncontact AC/DC switch (max. 20 Hz)
( ) = Max. frequency

1: No conversion to one-shot
3: One-shot output (std. pulse width 50 msec.)
(Specify when optional pulse width is required.)

[4] OUTPUT LOGIC (both Input 1 & 2)
N: The same as the input
R: Inverted

AC Power
K: 85 – 132 V AC
DC Power
S: 12 V DC
R: 24 V DC
V: 48 V DC
P: 110 V DC

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

SPECIFICATIONS OF OPTION: Q (multiple selections)
COATING (For the detail, refer to M-System's web site.)
/C01: Silicone coating
/C02: Polyurethane coating
/C03: Rubber coating
/S01: Stainless steel

This unit is not designed to output uniform pulses even when the input wave is uniform. It is not applicable to certain types of application.

• Programming Unit (model: PU-2x)
• PC configurator software (model: JXCON)
Downloadable at M-System’s web site.
A dedicated cable is required to connect the module to the PC.  Please refer to the internet software download site or the users manual for the PC configurator for applicable cable types.

Construction: Plug-in
Connection: M3.5 screw terminals
Screw terminal: Chromated steel (standard) or stainless steel
Housing material: Flame-resistant resin (black)
Isolation: Input 1 or input 2 to output to power
Input monitor LED: Red LED blinks according to the input.
Output monitor: Red LED blinks according to the output.
Software programming: Programming Unit (model: PU-2x);
(Refer to the users manual of JXCON for the adjustments configurable with JXCON)
• Input and output pulse set count (frequency)
• Sampling time
• Others
Adjustments: With DIP switches.
• Noise filter
(Refer to the instruction manual for details)
Sampling time: 0.01 – 100 sec.
Buffer counter capacity: 4 294 967 295 counts (reset to 0 when the power is lost)
Input pulse sensing: DC coupled

Max. frequency: 100 kHz
(10 Hz for mechanical contact input)
Minimum pulse width time requirement: 5 μsec.; 50 msec. for mechanical contact (for both ON and OFF)
Open Collector & Mechanical Contact
Sensing voltage/current: 12 V DC @ 2.3 mA
Detecting level: 2 V
(Detecting voltage in the internal circuit.)
Detecting pulse state: ON (input monitor LED OFF) and OFF (LED ON) detected
Voltage Pulse
Specify DC offset and pulse amplitude when ordering.
Waveform: Square or sine
Input impedance: 10 kΩ minimum
Pulse amplitude: 0.1 – 100 Vp-p (square)
1 – 100 Vp-p (sine or similar)
Max. voltage between input terminals: 50 V
Detecting pulse state: Pulse rise detected when the input voltage goes above the detecting level (input monitor LED ON); pulse sink detected when it goes below the level (LED OFF).
Two-wire Current Pulse
Specify DC offset and pulse amplitude when ordering.
Input resistance: Receiving resistor 100 Ω
Input range: 0 – 25 mA
Minimum pulse amplitude: 10 mA
Detecting level: 0 – 5 V
Detecting pulse state: The input resistor (100 Ω) converts the current signal into 0 – 2.5 V. Pulse rise detected when the voltage goes above the detecting level (input monitor LED ON); pulse sink detected when it goes below the level (LED OFF).

Output pulse: [No. of input pulse 1 + 2] × scaling factor (scaling factor = output pulse set count / input pulse set count)
Scalable range: 1/1 000 000 to 1 000 000
■ Open Collector: 50 V DC @ 50 mA (resistive load)
Saturation voltage: 0.6 V DC
Maximum frequency: 100 kHz
Voltage Pulse
H level
: Rating (5, 12 or 24 V) ±10 %
L level: ≤ 0.5 V
Load resistance: ≥ 1 kΩ (5 V), ≥ 2.4 kΩ (12 V),
≥ 4.8 kΩ (24 V)
Maximum frequency: 100 kHz
Noncontact AC/DC Switch: 120 V AC or 120 V DC @200 mA (resistive load)
ON resistance: 3 Ω
Maximum frequency: 20 Hz
Rise time: 5 msec.
Sink time: 3 msec.
RS-422 Line Driver Pulse
: Conforms to RS-422
Maximum frequency: 100 kHz

No conversion to one-shot: Duty ratio approx. 50 %; Internal digital computation calculates the pulse width.
One-shot Output: Preset pulse width ±20 %
Optional pulse width: 30 μsec. – 300 msec.

Power input
AC: Operational voltage range 85 – 132 V,
47 – 66 Hz, approx. 6 VA
DC: Operational voltage range: Rating ±10 %, or 85 – 150 V for 110 V rating; ripple 10 %p-p max.; Approx. 3.3 W (140 mA at 24 V)
Operating temperature: -5 to +60°C (23 to 140°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: 400 g (0.88 lb)

Response time: Sampling time + 50 msec.
The response time equals the interval between the first input pulse and the first output pulse.
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 2000 V AC @ 1 minute (input 1 or input 2 to output to power to ground)

This unit is programmed and calibrated at the factory according to the Ordering Information Sheet.
Please refer to the instruction manual for the model under “Software Setting” when you need to modify certain specifications.
DO NOT change setting of unused switches and adjusters.




M-System Co., Ltd.