TSURUGA ELECTRIC NRP-60 Instruction Manual

Instruction Manual

Meter Relay Model NRP-60

I-01899-1/2

We thank you for your purchase of our model NRP-60 series meter relay. For safety use of this product, please observe the
following caution. For proper operation of it, please also read the instructions to follow before the initial operation.



CAUTION

To prevent electric shock, observe the following cautions:

◆ Never make power line connections with active lines.

◆ Ensure firm and tight connections to the terminals.

◆ Do not touch the power source terminals while the

instrument is powered on.

■ Check at Delivery
When the product is delivered to you, please check that its specifications conform to your requirement and that there is no damage in
transit. This instrument is carefully inspected before delivery from factory under our strict quality control program, but if you find
any defect or inconvenience, please inform us of the model name and serial number of the product, etc.

■ Cautions for Use

① This product is a precision instrument, so please take utmost care for transportation, installation or any other handling of it.
② No power on-off switch is provided on this product, so it immediately starts to operate when connected to the power source.
③ In case of fear that the external noise of surge may cause malfunction or breakdown of this instrument, it is necessary to take
proper protective solution against noise.
④ In case of fear that this instrument suffers the surge voltage, ground one side of the measuring input terminals.
⑤ Use this product within the range or conditions conforming to its specifications and standard.

Name of Parts

■

Low limit setting index High limit setting index

Low limit setting knob

Measuring

pointer

High limit setting knob

Zero adjuster

Note: In case that the model name is NRP-60H, no low limit setting lever, set point

index bar ,low limit display or contact output terminal is provided.

■

Panel Cut-Out Dimensions

２４ ２４

４－φ４

To avoid electric shock, failure or abnormal heat-up of the
instrument, do not use the instruments in such places where:

◆ exposed to rain, water drops or direct sunlight.

◆ high temperature or humidity, much dust or corrosive gas.

◆ affected by external noise, radio waves or static electricity.

◆ where there is constant vibration shock.

Measuring

input terminal

Output terminal

high limit contact

Auxiliary supply terminals

[Note]

Output terminal

low limit contact

Installation

７

５

２４２４

■

Insert the instrument from the front of the panel to install.
And fasten them with the mounting screw to the pane

Optimum fastening torque : 0.36~0.48N･m

TSURUGA ELECTRIC CORPORATION

Model NRP-60

I-01899- 2/2

■ Connections
Measuring input terminals of the instrument and,
the contact output and auxiliary supply terminals M3.

Measuring
input terminal

S

O

M

U

R

C

E

Auxiliary
supply terminals

Make firm and correct connections with crimp type terminal.
Optimum torque of the terminal screws: 0.36~0.48N･m

Note : In case that the model name is NRP-60H, no contact output
terminals for the low limit is provided.

Measuring Input Terminals

●

Output terminal
high limit contact

H

I

W

G

O

H

L

a

c

b

b

c

a

Output terminal
low limit contact

[Note]

Arrange a cabling of measuring input line and power source line as distant as possible from each other. Close and parallel wiring of
these two lines may cause unstable reading of the instrument.

① DC Volt Meter
DC Current Meter
Receiving Meter

Connect the measuring input with correct polarity.
Use the particular accessory when it is designated.

Ｍ

(＋)
(－)

(＋

(－)

)

Ｍ

Auxiliary supply Terminals

●

② AC Volt Meter
AC Current Meter

Connect the measuring input.
Use the particular accessory when it is designated.

AC INPUT

C

A

PUT

IN

① AC power source model ② DC power source model
Connect the AC voltage to the respective terminals of Connect the DV24V to the auxiliary supply
auxiliary supply terminals (SOURCE). terminals (SOURCE) with correct polarity.
AC100V power source voltage: Terminals ± and 100/110V
AC200V power source voltage: Terminals ± and 200/220V

S

O

U

R

C

E

±
100V(110V)±10％
200V(220V)±10％

S

O

U

R

C

E

＋

DC24V±10％

－

●

High Limit (HIGH) and Low Limit (LOW) Contact Output Terminals

The contact capacity of high and low limit contact output is, with resistive load: AC250V, 125VA or DC30V, 60W
Make the connections with the cable conforming to these capacities. In case that the relay controls with the capacity higher than
these, provide the auxiliary relay externally.

■

Operation

① Prior to the operation of instrument, check that the input rate, auxiliary supply voltage and connections are correct.
② Before starting the measurement, check if the measuring pointer is accurately at zero (which is the point when the DC4mA

or DC1V generated by a standard voltage/current generator is input to the input terminals, respectively when the rated input
is DC4~20mA or DC1~5V). If there is a discrepancy at zero, adjust the pointer to indicate zero with the adjuster provided
on the front of the instrument.
③ Turning the high (or low) limit setting knob, set the setting index at a desired point where the relay acts.

The setting index stops at slightly beyond the scaled range. If the setting knob is forcedly turned more, it causes a breakage,
so take care with it.

Note)

When the input impedance at the input rating DC1 ~ 5V with the specification of 7331 accessory having more than 1 MΩ is
inserted the auxiliary power with opened condition of input terminal of 7331, the measuring pointer indicates more than the
upper limit of the scale.

④ While the instrument is powered on and when the measuring pointer exceeds the setting index (set point), the relay is
actuated and, a-c turns ON (close) and c-b turns OFF (open).

Contact Information

Name : Tsuruga Electric Corporation
Address : 1-3-23 Minami-Sumiyoshi, Sumiyoshi-ku, Osaka-shi
558-0041 Japan

TSURUGA ELECTRIC CORPORATION

Instruction Manual

Meter Relay Model NRP-83

I-01972 1/3

We thank you for your purchase of our model NRP-83 series meter relay. For safety use of this product, please observe the
following caution. For proper operation of it, please also read the instructions to follow before the initial operation.



CAUTION

To prevent electric shock, observe the following cautions:

◆ Never make power line connections with active lines.

◆ Ensure firm and tight connections to the terminals.

◆ Do not touch the power source terminals while the

instrument is powered on.

■ Check at Delivery
When the product is delivered to you, please check that its specifications conform to your requirement and that there is no damage in
transit. This instrument is carefully inspected before delivery from factory under our strict quality control program, but if you find
any defect or inconvenience, please inform us of the model name and serial number of the product, etc.

■ Cautions for Use

① This product is a precision instrument, so please take utmost care for transportation, installation or any other handling of it.
② No power on-off switch is provided on this product, so it immediately starts to operate when connected to the power source.
③ In case of fear that the external noise of surge may cause malfunction or breakdown of this instrument, it is necessary to take
proper protective solution against noise.
④ In case of fear that this instrument suffers the surge voltage, ground one side of the measuring input terminals.
⑤ Use this product within the range or conditions conforming to its specifications and standard.

Name of Parts

■

Low limit setting index

Low limit LED display

High limit setting index

High limit LED display

Measuring
pointer

Low limit setting knob

High limit setting knob

Zero adjuster

Note: In case that the model name is NRP-83H, no low limit setting lever, set point

index bar ,low limit display or contact output terminal is provided.

■

Panel Cut-Out Dimensions

３４ ３４

４－φ４

To avoid electric shock, failure or abnormal heat-up of the
instrument, do not use the instruments in such places where:

◆ exposed to rain, water drops or direct sunlight.

◆ high temperature or humidity, much dust or corrosive gas.

◆ affected by external noise, radio waves or static electricity.

◆ where there is constant vibration shock.

Measuring
input terminal

Output terminal
high limit contact

Auxiliary supply terminals

Variable resister
for span adjustment

(option)

[Note]

Output terminal
low limit contact

Installation

０

８

３４３４

■

Insert the instrument from the front of the panel to install.
And fasten them with the mounting screw to the pane

Optimum fastening torque : 0.36~0.48N･m

TSURUGA ELECTRIC CORPORATION

Model NRP-83

I-01972 2/3

■

Connections

Measuring input terminals of the instrument and,

Measuring
input terminal

the contact output and auxiliary supply terminals M3.
Make firm and correct connections with crimp type terminal.
Optimum torque of the terminal screws: 0.36~0.48N･m

S

O

U

M

Note : In case that the model name is NRP-83H, no contact output
terminals for the low limit is provided.

●

Measuring Input Terminals

Output terminal
high limit contact

H

I

G

H

a

c

b

Arrange a cabling of measuring input line and power source line as
distant as possible from each other. Close and parallel wiring of these
two lines may cause unstable reading of the instrument.

① DC Volt Meter
DC Current Meter
Receiving Meter

Connect the measuring input with correct polarity.
Use the particular accessory when it is designated.

Ｍ

(＋)
(－)

(＋

(－)

)

Ｍ

Auxiliary supply Terminals

●

② AC Volt Meter
AC Current Meter

Connect the measuring input.
Use the particular accessory when it is designated.

AC INPUT

① AC power source model ② DC power source model
Connect the AC voltage to the respective terminals of Connect the DV24V to the auxiliary supply
auxiliary supply terminals (SOURCE). terminals (SOURCE) with correct polarity.
AC100V power source voltage: Terminals ± and 100/110V
AC200V power source voltage: Terminals ± and 200/220V

High Limit (HIGH) and Low Limit (LOW) Contact Output Terminals

●

S

O

U

R

C

E

±
100V(110V)±10％
200V(220V)±10％

S

O

UR

C

E

The contact capacity of high and low limit contact output is, with resistive load: AC250V, 3A or DC30V, 3A
Make the connections with the cable conforming to these capacities. In case that the relay controls with the capacity higher than
these, provide the auxiliary relay externally.

Auxiliary
supply terminals

R

C

E

W

O

L

b

c

a

Output terminal
low limit contact

C

T

U

A

P

N

I

＋

DC24V±10％

－

[Note]

TSURUGA ELECTRIC CORPORATION