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

JUA

Plug-in Signal Conditioners M-UNIT

UNIVERSAL TRANSMITTER

Functions & Features
• Accepting a direct input from various sensors and providing a standard process signal
• Alarm relay outputs available
• Linearization
• Input type and I/O ranges are programmable via hand-held programmer PU-2x or PC
• Isolation up to 2000 V AC
• High-density mounting
Typical Applications
• Abnormality detection for various devices
• Continuous monitoring
• Ideal for quick spare part
 

MODEL: JUA–[1][2]

ORDERING INFORMATION
• Code number: JUA-[1][2]
Specify a code from below for each of [1] and [2].
  (e.g. JUA-B/Q)
• Specify the specification for option code /Q
  (e.g. /C01/S01)

INPUT – Field-selectable
DC Current & Voltage
Current: Usable range ±50 mA; min. span 0.03 mA
Voltage: Usable range ±10 V; min. span 3 mV
Thermocouple
(PR), K (CA), E (CRC), J (IC), T (CC)
B (RH), R, S, WRe 5-26, N
3-wire RTD
JPt 100 (JIS '89), Pt 100 (JIS '97, IEC)
2-wire RTD
Pt 100 (JIS '97, IEC)
Potentiometer
Total resistance 100 Ω – 10 kΩ

OUTPUT
DC Current & Voltage
•Current: Spans 8 – 20 mA DC
•Voltage: Spans 4 – 11.5 V DC
Alarm Output (two)
SPDT or transfer contact

[1] POWER INPUT
AC Power
B: 100 V AC
C: 110 V AC
D: 115 V AC
F: 120 V AC
G: 200 V AC
H: 220 V AC
J: 240 V AC
DC Power
S: 12 V DC
R: 24 V DC

[2] OPTIONS
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
TERMINAL SCREW MATERIAL
/S01: Stainless steel

RELATED PRODUCTS
• 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.

GENERAL SPECIFICATIONS
Construction: Plug-in
Connection: M3.5 screw terminals
Screw terminal: Chromated steel (standard) or stainless steel
Housing material: Flame-resistant resin (black)
Switching: Programming I/O specifications
Isolation: Input to DC output to alarm output to power
Overrange output: Approx. -15 to +115 % at 1 – 5 V
Burnout protection: for T/C or RTD inputs; upscale standard; downscale optional (Choose an output range with suppressed zero [e.g. 1 – 5 V, 4 – 20 mA] for downscale butnout.)
Linearization: 100 points max.
Cold junction compensation (T/C): CJC sensor (included) to be attached to the input terminals
Status indicator LED: Red LED
Alarm monitor LED: Red LEDs turn on when coils are energized.
Programming: Programming Unit (model: PU-2x); input type and range, zero and span,
DC output range, simulated output; relay trip action, setpoint and deadband (hysteresis), failsafe relay trip, ON delay time, power ON delay time, inverted output, linearization and burnout.
Hardware setting with front DIP switches must be done before software programming.
(Refer to the users manual of JXCON for the adjustments configurable with JXCON.)

INPUT SPECIFICATIONS
DC Current: -50 – +50 mA DC; input resistor incorporated (100 Ω)
Minimum span: 0.03 mA
Offset: Max. 1.5 times span
DC Voltage: -10 – +10 V DC
Minimum span: 3 mV
Offset: Max. 1.5 times span
Input resistance
(Input Span: Input Resistance)
3 mV – 1 V: 50 k (Ω min.)
≥ 1 V: 1M
Thermocouple
Minimum span: 3 mV
Offset: Max. 1.5 times span
Input resistance: 50 kΩ min.
Burnout sensing: 0.1μA
3-Wire RTD
Maximum leadwire resistance
: 20 Ω per wire
Sensing current: 1 mA
2-Wire RTD
Maximum leadwire resistance
: 20 Ω per wire; resistance adjustment required
Sensing current: 1 mA
■ Potentiometer: 100 Ω – 10 kΩ
Minimum span: 50 % of total resistance
Excitation: 0.3 V DC

OUTPUT SPECIFICATIONS
DC Output
DC Current: 0 – 20 mA DC
Minimum span: 8 mA
Offset: Max. 1.5 times span
Load resistance: Output drive 15 V max.
(Output : Load resistance)
4 – 20mA : 750 (Ω max.)
2 – 10mA : 1500
0 – 20mA : 750
0 – 16mA : 900
0 – 10mA : 1500
DC Voltage: 0 – 11.5 V DC
Minimum span: 4 V
Offset: Max. 1.5 times span
Load resistance: Output drive 1 mA max.
(Output: Load resistance)
0 – 10 V : 10 k (Ω min.)
0 – 5 V : 5000
1 – 5 V : 5000
Alarm Output: Relay contact
Rated load: 120 V AC @ 0.5 A (cos ø = 1)
240 V AC @ 0.5 A (cos ø = 1)
30 V DC @ 0.5 A (resistive load)
Maximum switching voltage: 380V AC or 125 V DC
(To conform with EU Directive, limit the voltage to 300 V AC (Measurement Category I) or 150 V AC (Measurement Category II) or less.)
Maximum switching power: 120 VA or 30 W (≤ 0.5 A)
Minimum load: 5 V DC @ 10 mA
Mechanical life: 5 × 107 cycles
For maximum relay life with inductive loads, external protection is recommended.

INSTALLATION
Power input
AC: Operational voltage range: rating ±10 %,
50/60 ± 2 Hz, approx. 2.5 VA
DC: Operational voltage range: rating ±10 %
ripple 10 %p-p max., approx. 2.5 W (105 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: 400 g (0.88 lb)

PERFORMANCE in percentage of span
DC input
 Accuracy
: ±0.1 %
Thermocouple input
 Accuracy
: ±0.3 %
 Linearization accuracy: ±0.05 %
 Cold junction compensation error: ±0.5°C or ±0.9°F max.
 (at 20°C ±10°C or 68°F ±18°F)
 Burnout response: ≤ 10 sec.
RTD input
 Accuracy
: ±0.1%  or ±0.1°C, whichever is greater
 (±0.3 % for 2-wire RTD)
 Burnout response: ≤ 10 sec.
Potentiometer input
 Accuracy
: ±0.1 %
Setting accuracy: ±0.3 % + input specific accuracy
Temp. coefficient: ±0.015 %/°C (±0.008 %/°F)
 (±0.03 %/°C or ±0.01 %/°F for 2-wire RTD)
Response time: ≤ 0.5 sec. (0 – 90 %)
(≤ 0.7 sec. for RTD inputs)
Line voltage effect: ±0.1 % over voltage range
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 2000 V AC @1 min. (input to DC output to alarm 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
  Measurement Category II (alarm output)
  Installation Category II (power)
  Pollution degree 2
 Input or DC output or alarm output to power:
 Reinforced insulation (300 V)
 Input to DC output to alarm output: Basic insulation (300 V)
RoHS Directive

EXTERNAL VIEW

EXTERNAL DIMENSIONS unit: mm [inch]

TERMINAL ASSIGNMENTS unit: mm [inch]
CJC sensor attached for a thermocouple input.

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

SOFTWARE FUNCTION BLOCK DIAGRAM

M-System Co., Ltd.