M-system JFR2 Instruction Manual

INSTRUCTION MANUAL

FREQUENCY SCALER

(eld-programmable; built-in excitation)

BEFORE USE ....

Thank you for choosing M-System. Before use, please check
contents of the package you received as outlined below.
If you have any problems or questions with the product,
please contact M-System’s Sales Office or representatives.

■ PACKAGE INCLUDES:

Signal conditioner (body + base socket) .............................(1)

■ MODEL NO.

Confirm Model No. marking on the product to be exactly
what you ordered.

■ INSTRUCTION MANUAL

This manual describes necessary points of caution when
you use this product, including installation, connection,
hardware setting and basic maintenance procedures.
When you need to change software settings, please refer to
the Operation Manual for Model PU-2x (EM-9255), Section
B.
This unit is factory adjusted and calibrated according to the
Ordering Information included in the product package. If
you don’t need to change the pre-adjusted setting, you can
skip the sections on hardware setting and calibration in this
manual and the Operation Manual for Model PU-2x.

MODEL

■ AND ....

•The unit is designed to function as soon as power is sup­plied, however, a warm up for 10 minutes is required for
satisfying complete performance described in the data
sheet.

JFR2

COMPONENT IDENTIFICATION

Body Base Socket

Connection Diagram

Front Cover

Specifications

■ HOW TO OPEN THE FRONT COVER

Position your finger on the hook at the top of front cover
and pull.

POINTS OF CAUTION

■ POWER INPUT RATING & OPERATIONAL RANGE

•Locate the power input rating marked on the product and
confirm its operational range as indicated below:

85 – 132V AC rating: 85 – 132V, 47 – 66 Hz, approx. 6VA
12V, 24V and 48V DC rating: Rating ±10%, approx. 3.3W
110V DC rating: 85 – 150V, approx. 3.3W

■ GENERAL PRECAUTIONS

•Before you remove the unit from its base socket or mount
it, turn off the power supply and input signal for safety.

■ ENVIRONMENT

•Indoor use.

•When heavy dust or metal particles are present in the

air, install the unit inside proper housing with sufficient
ventilation.

•Do not install the unit where it is subjected to continuous
vibration. Do not subject the unit to physical impact.

•Environmental temperature must be within -5 to +60°C
(23 to 140°F) with relative humidity within 30 to 90% RH
in order to ensure adequate life span and operation.

■ WIRING

•Do not install cables close to noise sources (relay drive
cable, high frequency line, etc.).

•Do not bind these cables together with those in which
noises are present. Do not install them in the same duct.

The shape of base socket may be different
for some models.

INSTALLATION

Detach the yellow clamps located at the top and bottom of
the unit to separate the body from the base socket.

■ DIN RAIL MOUNTING

Set the base socket so that its
DIN rail adaptor is at the bot­tom. Position the upper hook
at the rear side of base socket
on the DIN rail and push in
the lower. When removing
the socket, push down the
DIN rail adaptor utilizing a
minus screwdriver and pull.

■ WALL MOUNTING

Refer to “EXTERNAL DI­MENSIONS.”

DIN Rail Adaptor

Shape and size of the base socket
are slightly different with various
socket types.

Clamp

(top & bottom)

DIN Rail

35mm wide

Spring Loaded

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]

EM-1581 Rev.4 P. 1 / 8

TERMINAL CONNECTIONS

Connect the unit as in the diagram below or refer to the connection diagram on the top of the unit.

■ EXTERNAL DIMENSIONS unit: mm (inch)

CLAMP
(top & bottom)

20

(.79)

DIN RAIL
35mm wide

JFR2

7.8 (.31)

3456

80 (3.15)

50 (1.97) 107 (4.21)

127 (5) [3.3 (.13)]

■ CONNECTION DIAGRAM

■ OPEN COLLECTOR, MECHANICAL CONTACT,

VOLTAGE PULSE or 2-WIRE CURRENT PULSE INPUT

+

INPUT

SENSOR EXCITATION

PU-2x

With 24V excitation and open collector/mechanical contact input,
the voltage across the terminals 3 – 4, divided in the waveform shaper,
is of approx. 16V.

3

–

4

+

5

MODULAR JACK

+

1

2

7

8

OUTPUT

–

U(+)

POWER

V(–)

2–4.5 (.18) dia.

MTG HOLE

15 (.59) deep

8–M3.5

2187

SCREW

40 (1.57)

50 (1.97)

• When mounting, no extra space is needed between units.

■ RS-422 LINE DRIVER INPUT

INPUT

SENSOR EXCITATION

PU-2x

+

3

–

6

+

5

–

4

MODULAR JACK

+

1

2

7

8

OUTPUT

–

U(+)

POWER

V(–)

80 (3.15)

Input Connection Examples

■ Open Collector or
Mechanical Contact

+

3

–

4

–

PWR

+

5

5kΩ

■ Voltage Pulse

+

3

–

4

–

PWR

+

5

■ RS-422 Line Driver Pulse

+

3

–

6

–

PWR

4

+

5

Vsns

Vsns

Output Connection Examples

■ 2-Wire Current Pulse

• Built-in Excitation

2-WIRE

PICK-UP

Vsns

• External DC Supply

2-WIRE

PICK-UP

DC SUPPLY

–

100Ω

3

4

+

5

–

100Ω

3

+

4

+

5

–

■ Open Collector

+

1

–

Vsns

2

■ Noncontact AC/DC Switch

• AC Powered

1

2

Vsns

• DC Powered

+

–

LOAD

U

1

LOAD

2

+

–

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]

■ RS-422 Line Driver Pulse

+

1

–

2

+

–

■ Voltage Pulse

Relay or
Counter Coil

Varistor or Spark
Quenching Circuit

Relay or
Counter Coil

Spark Quenching
Diode

+

–

+

+

1

–

–

2

EM-1581 Rev.4 P. 2 / 8

EXPLANATIONS OF TERMS & FUNCTIONS

■ LOW-END CUTOUT

The output frequency is forcibly set to 0 Hz when the input
frequency is below the low-end cutout setting by the PU-2x
Programming Unit. It is selectable from 0.3 to 100% of the
selected input frequency range (e.g. 30 Hz – 10 kHz for the
input frequency range 0 – 10 kHz). Use the same unit as
that for the input.
The low-end cutout is reset when the input frequency ex­ceeds the cutout value by 1%. For example, with the input
frequency range 0 – 100 kHz, the input span frequency 10
kHz and the low-end cutout set to 1 kHz; the output equals
0 Hz while the input is within 0 – 1 kHz. When it goes
higher than 1.1 kHz, the output becomes proportional to the
input.
When the input frequency range setting is changed, the
low-end cutout value is automatically reset to the default
value, 0.3% of the range.

■ SCALING FACTOR, INPUT SPAN FREQUENCY & OUT-
PUT SPAN FREQUENCY

The scaling factor, rate of output frequency divided by input
frequency, are determined by two parameters: input span
frequency and output span frequency.
Although there are also input zero frequency and output
zero frequency, they are fixed to zero (0) Hz.
The output frequency is limited up to 115% of the output
span frequency.

JFR2

■ DETECTING PULSE EDGE

• Open Collector & Mechanical Contact:

OFF (input monitor LED ON) to ON (input monitor LED
OFF)

• Voltage Pulse

A pulse rise detected when the input voltage goes above
the detecting level (input monitor LED ON); a pulse sink
detected when it goes below the level (input monitor LED
OFF).

• Two-wire Current Pulse

The input resistor (100 Ω) converts the current signal (0 –
25 mA) into 0 – 2.5 V. A pulse rise detected when the volt­age goes above the detecting level (input monitor LED ON);
a pulse sink detected when it goes below the level (input
monitor LED OFF).

■ INPUT/OUTPUT WAVEFORMS

The figure below shows an example of the output waveform
when the input is changed from 100% to 0% (0 Hz), with no
conversion to one-shot.
The output, as shown in the figure, does not drop to 0 Hz im­mediately after the input does, but rather decreases gradu­ally down to 0 Hz.
The time required for the output reaches 0 Hz is longer
when the input frequency range is lower.
In general, it becomes shorter when the low-end cutout
value is greater.

INPUT

Input 100% Input 0%

OUTPUT

Output 100%

Output frequency decreasing

Time

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]

EM-1581 Rev.4 P. 3 / 8