ES-1873 Rev.11
18JPA
Rack-mounted DCS Signal Conditioners 18-RACK
FREQUENCY TRANSMITTER
(field-programmable)
Functions & Features
• Converting the output from a pulse-type transducer into two standard process signals
• Microprocessor based
• Field-programmable frequency range
• Linearization available for flow compensation
• Averaging non-uniform pulses
• Excitation
• Loop testing via hand-held programmer PU-2x
• Second channel output available at the front terminals and at the Standard Rack connector
Typical Applications
• Positive displacement flowmeters, turbine flowmeters and vortex flowmeters
• Proximity switches
• Oval flowmeters
MODEL: 18JPA–[1]66–R
ORDERING INFORMATION
• Code number: 18JPA-[1]66-R
Specify a code from below for [1].
(e.g. 18JPA-266-R)
• Frequency range (e.g. 0 – 152.3 Hz)
• Linearization data (max. 16 points)
Use Ordering Information Sheet (No. ESU-1673) to specify linearization data when the I/O signals are non-linear.
Note: Consult factory on applications with a sensor handling periodically (& quickly) changing frequency (e.g. oval flowmeter).
[1] INPUT
1
: Open collector (Excitation: 12 V @ 30 mA)
2
: Voltage pulse (Excitation: 12 V @ 30 mA)
3
: Mechanical contact (Excitation: 12 V @ 30 mA)
OUTPUT 1
Voltage
6
: 1 – 5 V DC (Load resistance 2000 Ω min.)
OUTPUT 2
Voltage
6
: 1 – 5 V DC (Load resistance 2000 Ω min.)
POWER INPUT
DC Power
R
: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
RELATED PRODUCTS
• Programming Unit (model: PU-2x)
• PC configurator software (model: JXCON)
Downloadable at our 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
: Rack-mounted; terminal access via screw terminals on the front and connector on the rear; terminal cover provided
Connection
Input
: M3.5 screw terminals (torque 0.8 N·m)
Output 1
: Connector
Output 2
: M3.5 screw terminals (torque 0.8 N·m)
and connector
Power input
: Supplied from connector
Screw terminal
: Nickel-plated steel
Isolation
: Input to output 1 to output 2 to power
Overrange output
: -10 – +120 % at 1 – 5 V
(0 – 120 % when 0 % input equals to 0 Hz.)
Linearization
: 16 points max. represented as percentage of full-scale
Adjustments
: Programming Unit (model: PU-2x); input range, low-end cutout, zero and span, simulating output, averaging nonuniform pulses, linearization data, etc.
(Refer to the users manual of JXCON for the adjustments configurable with JXCON.)
Low-end cutout
: 0 – 100 % adjustable (factory set to 0 %); hysteresis fixed to 1 %
INPUT SPECIFICATIONS
Excitation
: 12 V DC @30 mA; shortcircuit protection
Pulse width (time) requirement:
10 msec. min. at
< 20 Hz; duty ratio 20 – 80 % at ≥ 20 Hz
Offset
: Max. 3 times span
■
Open Collector
Frequency range
: 0 – 0.01 Hz through 25 kHz
(0 – 1 kHz will be used if not otherwise specified)
Sensing
: Approx. 12 V DC @ 3 mA
ON/OFF level
: ≤ 800 Ω / 2 V for ON,
≥ 1.2 kΩ / 3.6 V for OFF
■
Mechanical Contact
Frequency range
: 0 – 0.01 Hz through 5 Hz
(0 – 5 Hz will be used if not otherwise specified)
Sensing
: Approx. 12 V DC @ 3 mA
ON/OFF level
: ≤ 800 Ω / 2 V for ON,
≥ 1.2 kΩ / 3.6 V for OFF
■
Voltage Pulse
: Square or sine waveforms
Frequency range
: 0 – 0.01 Hz through 25 kHz
(0 - 1 kHz will be used if not otherwise specified.)
Input amplitude
: 2 – 50 Vp-p
Input impedance
: 10 kΩ min.
INSTALLATION
Current consumption
: Approx. 90 mA
Operating temperature
: -5 to +55°C (23 to 131°F)
Operating humidity
: 30 to 90 %RH (non-condensing)
Mounting
: Standard Rack 18BXx or 18KBXx
Weight
: 150 g (0.33 lb)
PERFORMANCE in percentage of span
Accuracy
: ±0.1 % with segment gain ≤ 1 [±0.1 % × gain] with segment gain > 1
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
: 1500 V AC @ 1 minute
(input to output 1 or output 2 or power)
500 V AC @ 1 minute
(output 1 to output 2 to power)
1500 V AC @ 1 minute
(input or output or power to ground)
EXTERNAL DIMENSIONS unit: mm [inch]
TERMINAL ASSIGNMENTS
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM