RKI Instruments RM-5000 User Manual

Download

PT1E-1050

Indicator/Alarm Unit

RM-5000 Series

Operating Manual

Request for the Customers

• Read and understand this operating manual before using the indicator/alarm unit.

• Use the indicator/alarm unit in accordance with the operating manual.

• Regardless of warranty period, we shall not make any indemnification for accidents and

damage caused by using this product.

Make sure to read the warranty policy specified on the warranty.

• Because this is a safety unit, a regular maintenance for every six months and daily

maintenance must be performed.

• If any abnormality is found in the indicator/alarm unit, notify it to RIKEN KEIKI immediately. (Visit our Web site to find your nearest RIKEN KEIKI office.)

<Contents>

1 Outline of the Product.............................................................................................. 3

1-1. Preface .................................................................................................................... 3

1-2. Purpose of use ........................................................................................................3

1-3. Definition of DANGER, WARNING, CAUTION, and NOTE ..................................... 4

2 Important Notices on Safety .................................................................................... 5

2-1. Danger cases ..........................................................................................................5

2-2. Warning cases......................................................................................................... 6

2-3. Precautions ............................................................................................................. 7

3 Product Components............................................................................................... 8

3-1. Main unit and accessories ....................................................................................... 8

3-2. Outline drawing ....................................................................................................... 9

3-3. Names and functions for each part.......................................................................... 10

3-3. Block diagram.......................................................................................................... 14

4 How to Use.............................................................................................................. 15

4-1. Before using the indicator/alarm unit ....................................................................... 15

4-2. Precautions for installation points............................................................................ 15

4-3. Precautions for system designing............................................................................ 16

4-4. How to install ........................................................................................................... 19

4-5. How to wire.............................................................................................................. 21

5 How to Operate ....................................................................................................... 31

5-1. Preparation for start-up............................................................................................ 31

5-2. Basic operating procedures..................................................................................... 32

5-3. How to start the indicator/alarm unit ........................................................................ 33

5-4. Modes...................................................................................................................... 34

5-5. Detection mode ....................................................................................................... 36

5-6. Alarm test mode ...................................................................................................... 37

5-7. User mode............................................................................................................... 38

5-8. How to exit...............................................................................................................42

6 Operations and Functions ....................................................................................... 43

6-1. Gas alarm activation................................................................................................ 43

6-2. Fault alarm activation .............................................................................................. 47

6-3. External output operation ........................................................................................ 48

6-4. Other functions ........................................................................................................ 50

7 Maintenance............................................................................................................ 52

7-1. Maintenance intervals and items ............................................................................. 52

7-2. Regular maintenance mode .................................................................................... 54

7-3. Gas calibration method............................................................................................ 69

7-4. How to clean............................................................................................................ 72

7-5. How to replace the fuse........................................................................................... 72

8 Storage, Relocation and Disposal ........................................................................... 73

8-1. Procedures to store the indicator/alarm unit or leave it for a long time.................... 73

8-2. Procedures to relocate the indicator/alarm unit or use it again................................ 73

8-3. Disposal of products................................................................................................ 73

9 Troubleshooting....................................................................................................... 74

10 Product Specifications ............................................................................................. 77

10-1. List of specifications ................................................................................................ 77

10-2. Product components................................................................................................ 79

11 Definition of Terms................................................................................................... 80

RM-5000 - 2 -

1 Outline of the Product 1-1. Preface

Outline of the Product

1-1. Preface

Thank you for choosing our indicator/alarm unit RM-5000 series for use with the gas detection and alarm system. Please check that the model number of the product you purchased is included in the specifications on this manual.

This manual explains how to use the indicator/alarm unit and its specifications. It contains information required for using the indicator/alarm unit properly. Not only the first-time users but also the users who have already used the product must read and understand the operating manual to enhance the knowledge and experience before using the indicator/alarm unit.

1-2. Purpose of use

• Use the indicator/alarm unit RM-5000 series in combination with a gas detector head on a one-on-one

basis.

GP-5001: Combustible gas indicator/alarm unit to be used in combination with a catalytic combustion

type detector head

NC-5001: Combustible gas indicator/alarm unit to be used in combination with a new ceramic type

detector head

NC-5001W: Combustible gas indicator/alarm unit with double range specifications to be used in

combination with a new ceramic type detector head

NP-5001: Combustible gas indicator/alarm unit to be used in combination with a thermal conductivity

type detector head

SP-5001: Combustible gas or toxic gas indicator/alarm unit to be used in combination with a hot-wire

semiconductor type detector head

GH-5001: Combustible gas or toxic gas indicator/alarm unit to be used in combination with a

semiconductor type detector head

EC-5002: Toxic gas indicator/alarm unit to be used in combination with an electrochemical type

detector head

OX-5001: Oxygen indicator/alarm unit to be used in combination with a detector head that uses an

oxygen sensor

OX-5002: Oxygen indicator/alarm unit to be used in combination with a detector head that uses an

oxygen sensor

RM-5002: Indicator/alarm unit to be used in combination with a gas detector head that outputs general

measurement signals

RM-5003: Gas indicator/alarm unit to be used in combination with a gas detector head with 3-wire

type 4 - 20 mA output specifications

- 3 - RM-5000

1 Outline of the Product 1-3. Definition of DANGER, WARNING, CAUTION, and NOTE

• The gas detection and alarm system is a safety unit, not an analyzer or densitometer which performs

quantitative/qualitative analysis/measurement for gases. You must understand the features of the indicator/alarm unit before using it, so that you can use it properly.

• The indicator/alarm unit displays a gas concentration on the character LCD (digital and bar meter display

<three colors of green, yellow, and red>) according to a signal from the detector head. Gas concentrations are displayed in different colors according to danger levels, i.e., in green if neither of the alarm setpoints is exceeded, in orange if the first alarm setpoint is exceeded, and in red if the second alarm setpoint is exceeded.

• The indicator/alarm unit has two-step gas alarm contact and fault alarm contact.

• The indicator/alarm unit outputs gas concentration in 4 - 20 mA or digital data (RS-485: option).

1-3. Definition of DANGER, WARNING, CAUTION, and

NOTE

DANGER

WARNING

CAUTION

NOTE

This message indicates that improper handling may cause serious damage on life, health or assets.

This message indicates that improper handling may cause serious damage on health or assets.

This message indicates that improper handling may cause minor damage on health or assets.

This message indicates advice on handling.

RM-5000 - 4 -

2 Important Notices on Safety 2-1. Danger cases

Important Notices on

Safety

2-1. Danger cases

DANGER

This is not an explosion-proof unit.

- 5 - RM-5000

2 Important Notices on Safety 2-2. Warning cases

2-2. Warning cases

WARNING

Specified devices Connect the indicator/alarm unit only to the specified devices. If it is connected to any unspecified device, the indicator/alarm unit or the connected device may be damaged.

Power supply Before turning on the indicator/alarm unit, always check that the voltage is properly applied. Do not use an unstable power supply because it may cause malfunctions.

Need of grounding circuit Do not cut the grounding circuit or disconnect the wire from the grounding terminal.

Defects in protective functions Before starting the indicator/alarm unit, check the protective functions for defects. When seeming defects are found in the protective functions, such as protective grounding, do not start the indicator/alarm unit.

External connection Before connecting the indicator/alarm unit to the external device, securely connect it to a protective grounding circuit.

Operation in a gas Do not operate the indicator/alarm unit in a place where combustible gases or vapors are present. Operating the indicator/alarm unit in such an environment will lead to extreme dangers.

Response to gas alarm Issuance of a gas alarm indicates that there are extreme dangers. Take proper actions based on your judgment.

RM-5000 - 6 -

2 Important Notices on Safety 2-3. Precautions

2-3. Precautions

CAUTION

Do not use a transceiver near the indicator/alarm unit. Radio wave from a transceiver, etc. near the indicator/alarm unit or its cables may disturb indication reading. If a transceiver or other radio wave transmitting device is used, it must be used in a place where it disturbs nothing.

To restart the indicator/alarm unit, wait for five seconds or more before doing it. Restarting the indicator/alarm unit in less than five seconds may cause errors.

Do not use the external output of the indicator/alarm unit to control other units. This is not a control unit. It is not allowed to use the external output of the indicator/alarm unit to control other units.

Do not disassemble/modify the indicator/alarm unit, or change the settings if not necessary. Disassembling/modifying the indicator/alarm unit will invalidate the warranty of the performance. Changing the settings without understanding the specifications may cause alarm malfunctions. Please use the indicator/alarm unit properly in accordance with the operating manual.

Never fail to perform a regular maintenance. Since this is a safety unit, a regular maintenance on it and the detector head must be performed to ensure safety.

- 7 - RM-5000

3 Product Components 3-1. Main unit and accessories

Product Components

3-1. Main unit and accessories

<Main Unit (RM-5000 Series)> <Accessories> EC-5002, OX-5002, RM-5002, RM-5003

• Operating manual One copy per system regardless of the number of units to be delivered

GP-5001, NC-5001, NC-5001W, NP-5001 SP-5001, GH-5001, OX-5001

RM-5000 - 8 -

3 Product Components 3-2. Outline drawing

3-2. Outline drawing

NOTE

Install the indicator/alarm unit in a single-unit case (option) or multi-unit case (option) before using it. This section explains the unit in a single-unit case. For information on using a multi-unit case, see the operating manual of the multi-unit case.

Display

Terminal plate

Power lamp

First alarm lamp

Fault lamp

Second alarm lamp

Panel

Fixing bracket

- 9 - RM-5000

3 Product Components 3-3. Names and functions for each part

3-3. Names and functions for each part

(9) Fault lamp

(8) Second alarm

lamp

(7) First alarm lamp

(6) Power lamp

(19) Maintenance

port

(1) Power switch

(11) Gas concentration

bar meter display

(2) MODE key

(3) ALM2/▲ key

(4) ALM1/▼ key

(5) TEST/SET key

(10) Gas concentration

digital value display

(13) Full scale value

display

(17) Digital

communication display

(16) Inhibit display

(15) Maintenance

display

(18) Double range

display

(20) Current/voltage

display

(14) Unit display

(12) Gas name and

message display

RM-5000 - 10 -

3 Product Components 3-3. Names and functions for each part

Number in

Item Function

the figure

(1) POWER switch Power switch.

(2) MODE key Used to enter the maintenance mode.

It is also used to cancel or skip in a specific mode.

(3) ALM2/▲ key Used to switch screen or change a value (UP).

Also used to display the second alarm (ALM2) setpoint.

(4) ALM1/▼ key Used to switch screen or change a value (DOWN).

Also used to display the first alarm (ALM1) setpoint.

(5) TEST/SET key Used to enter the test mode.

It is used for value confirmation and so on in a specific mode.

(6) Power lamp (POWER) Power lamp. It lights up in green when the power is on.

(7) First alarm lamp

(ALM1)

(8) Second alarm lamp

(ALM2)

First alarm lamp. It blinks or lights up in red when the first alarm is reached.

Second alarm lamp. It blinks or lights up in red when the second alarm is reached.

(9) Fault lamp (FAULT) Fault lamp. It lights up in yellow when an abnormality is detected

in the indicator/alarm unit.

(10) Gas concentration

Displays the gas concentration and so on.

digital value display

(11) Gas concentration bar

meter display

The detectable range (full scale = FS) is divided into 50 with bars. The increase in concentration is displayed in proportion to the full scale.

(12) Gas name display Displays gas name in chemical formula, etc. (e.g. CH4 for

methane)

(13) Full scale value display Displays the full scale value of a detected gas.

(14) Gas concentration unit

display

Displays the unit according to the specification (ppm, ppb, vol%, %, %LEL).

(15) Maintenance display Displayed during the maintenance mode. When this indicator is

displayed, the alarm contact is disabled.

(16) Inhibit display Displayed when the inhibition (point skip) is set.

(17) Digital communication

display (*1)

(18) Double range display

(*2)

For RS-485 communications, this indicator is displayed (TX, RX) while transmitting data with the upper unit.

Displayed for the double range specifications (WH: High range, WL: Low range).

(19) Maintenance port Used by a service engineer during maintenance. This is not

typically used by the user.

(20) Current/voltage display Displayed during the environmental setting (adjustment and

setting operations) for the sensor in maintenance mode.

*1: Displayed only on a model with RS-485 (option) mounted. *2: Displayed only on NC-5001W.

- 11 - RM-5000

3 Product Components 3-3. Names and functions for each part

Gas concentration digital display (seven-segment)

Numbers

0 1 2 3 4 5 6 7 8 9

Alphabet (upper-case)

A B C D E F G H I J K L M

N O P Q R S T U V W X Y Z

Alphabet (lower-case)

a b c d e f g h i j k l m

n o p q r s t u v w x y z

Symbols

- ^

Gas name and message display (14-segment)

Numbers

0 1 2 3 4 5 6 7 8 9

Alphabet (upper-case)

A B C D E F G H I J K L M

N O P Q R S T U V W X Y Z

Symbols

@ + - /

RM-5000 - 12 -

3 Product Components 3-3. Names and functions for each part

Attach or detach the indicator/alarm unit from the single-unit case or multi-unit case according to the following procedure.

(1) Attaching procedure

• Open the front cover of the indicator/alarm unit.

• Make sure that the power switch of the indicator/alarm unit is OFF.

• Insert the indicator/alarm unit along the rail into the single-unit case or multi-unit case.

• Push it in until an click is heard and you feel that it is locked in.

• Gently pull it to make sure that the indicator/alarm unit does not come off.

• Close the front cover of the indicator/alarm unit.

(2) Detaching procedure

• Open the front cover of the indicator/alarm unit.

• Make sure that the power switch of the indicator/alarm unit is OFF.

• While pressing the lock lever on the lower right of the indicator/alarm unit, hold the front cover and

pull it out of the case.

• Close the front cover of the indicator/alarm unit.

CAUTION

Front cover

Turn off the power of the indicator/alarm unit before attaching or detaching it. Otherwise, a failure may be caused.

This is a precision device. Be careful not to drop it when detaching it. Dropping the unit compromises its original performance or causes malfunctions.

the lock lever upward.

Press

- 13 - RM-5000

3 Product Components 3-3. Block diagram

(

3-3. Block diagram

*1: Installed only in GP-5001, NC-5001, NC-5001W, NP-5001, SP-5001, GH-5001, OX-5001. *2: Only on a model with RS-485 (option) mounted.

Power supply part

POWER INPUT (24 VDC)

Alarm contact controller

Gas alarm contact (ALM1, ALM2) Fault alarm contact (FAULT) * Standard setting of

contact activation

• De-energized (De-energized at a normal state)

• ON-ALARM (Closed contact at an alarm state)

Transmitter 4-20 mA DC transmission Digital data (RS-485) transmission (*2)

Controller

(CPU)

Bar meter, gas name display, concentration display, unit display, etc.

Detector head (option)

Amplifier (*1)

Controller

(CPU)

(POWER) (ALM1) (ALM2) (FAULT)

Operating unit

(MODE) (ALM2/▲) (ALM1/▼)

Alarm signal controller

Gas alarm signal (ALM1, ALM2) output Fault alarm signal (FAULT) output

Control signal input

Reset signal input Test input Buzzer stop signal input

LCD display

Lamp

TEST/SET)

RM-5000 - 14 -

4 How to Use 4-1. Before using the indicator/alarm unit

How to Use

4-1. Before using the indicator/alarm unit

Not only the first-time users but also the users who have already used the product must follow the operating precautions. Ignoring the precautions may damage the indicator/alarm unit, resulting in inaccurate gas detection.

NOTE

Install the indicator/alarm unit in a single-unit case (option) or multi-unit case (option) before using it. This section explains using the single-unit case. For information on using the multi-unit case, see the operating manual of the multi-unit case.

4-2. Precautions for installation points

CAUTION

This is a precision device. Because the indicator/alarm unit may not provide the specified performance in some places (environments), check the environment in the installation point, and then take appropriate actions if necessary. Because the indicator/alarm unit plays an important role for safety and disaster prevention, you must install as many units of the indicator/alarm unit as needed in appropriate points. Because points where gases leak and remain easily are different depending on the types of gases and the working areas, please decide carefully installation sites and the number of units to be installed.

Do not install the indicator/alarm unit in a place with vibrations or shocks. The indicator/alarm unit consists of sensitive electronic parts. The indicator/alarm unit must be installed in a stable place without vibrations or shocks and it cannot drop.

Do not install the indicator/alarm unit in a place exposed to water, oil or chemicals. When selecting installation points, avoid a place where the indicator/alarm unit is exposed to water, oil or chemicals.

Do not install the indicator/alarm unit in a place where the temperature drops below -10ºC or rises over 40ºC. The operating temperature of the indicator/alarm unit is -10 to 40ºC. The indicator/alarm unit must be

installed in a stable place where the operating temperature is maintained and does not change suddenly.

- 15 - RM-5000

4 How to Use 4-3. Precautions for system designing

Do not install the indicator/alarm unit in a place exposed to direct sunlight or sudden changes in the temperature. When you select installation sites, avoid a place where it is exposed to direct sunlight or radiant heat (infrared rays emitted from a high-temperature object), and where the temperature changes suddenly. Condensation may be formed inside the indicator/alarm unit, or the indicator/alarm unit cannot adjust to

sudden changes in the temperature.

Keep the indicator/alarm unit (and its cables) away from noise source devices. When selecting installation points, avoid a place where high-frequency/high-voltage devices exist.

Do not install the indicator/alarm unit in a place where maintenance of the indicator/alarm unit cannot be performed or where handling the indicator/alarm unit involves dangers. Regular maintenance of the indicator/alarm unit must be performed.

Do not install the indicator/alarm unit in a place where the machinery must be stopped when maintenance is performed in its inside, where parts of the machinery must be removed to perform maintenance, or where the indicator/alarm unit cannot be removed because tubes or racks prevent access to it. Do not install the indicator/alarm unit in a place where maintenance involves dangers, for example, near a high-voltage cable.

Do not install the indicator/alarm unit in machinery which is not properly grounded. Before installing the indicator/alarm unit in machinery, the machinery must be grounded properly.

Do not install the indicator/alarm unit in a place where other gases exist around it. The indicator/alarm unit must not be installed in a place where other gases exist around it.

4-3. Precautions for system designing

CAUTION

An unstable power supply and noise may cause malfunctions or false alarms. The descriptions in this section must be reflected on the designing of a system using the indicator/alarm unit.

Using a stable power supply The external output and alarm contact of the indicator/alarm unit may be activated when the power is turned on, when momentary blackout occurs, or when the system is being stabilized. In such cases, use a safety power supply, or take appropriate actions on the receiving side. The indicator/alarm unit must be provided with the following power supply.

Power supply

voltage

Allowed time of

momentary

blackout

Others

Heat radiation designing When it is installed in the closed instrumentation panel, attach ventilation fans above and below the panel.

Introducing protective measures against lightning If cables are installed outside the factory/plant, or if internal cables are installed in the same duct as the cables coming from outside the factory/plant, "lightning" will cause problems. Because lightning acts as a large emission source while cables act as a receiving antenna, devices connected to the cables may be damaged.

24 VDC (21.6 – 26.4 VDC) (Terminal voltage of the indicator/alarm unit)

Up to 10 milliseconds (To recover from the momentary blackout for 10 milliseconds or more, restart the indicator/alarm unit.)

Do not use it with a power supply of large power load or high-frequency noise.

Example of actions To ensure continuous operation and activation, install a protective power supply outside the indicator/alarm unit.

Example of actions Use a line filter to avoid the noise source if necessary.

RM-5000 - 16 -

4 How to Use 4-3. Precautions for system designing

Lightning cannot be prevented. Cables installed in a metal conduit or under the ground cannot be completely protected from inductive lightning surge caused by lightning. Although complete elimination of disasters caused by lightning is impossible, the following protective measures can be taken.

Take appropriate measures in accordance with the importance of the facilities and the environment.

• Connect the transmission signal route by using optical fiber.

Protection

against lightning

Grounding

* The lightning arrester has a circuit to remove a surge voltage which damages field devices, so that

signals may be attenuated by installing the arrester. Before installing a lightning arrester, verify that it works properly.

Proper use of alarm contact The alarm contact of the indicator/alarm unit is used to transmit signals to activate an external buzzer or alarm lamp. Do not use the indicator/alarm unit for controlling purpose (e.g., controlling the shutdown valve).

CAUTION

The "b" contact (break contact) under de-energized state may be opened momentarily by a physical shock, such as external force. When the "b" contact is selected for the alarm contact, take appropriate actions to prepare for a momentary activation, for example, add signal delay operation (approximately one second) to the receiving side of the "b" contact.

The specifications for the alarm contact of the indicator/alarm unit are based on the resistant load conditions. If inductive load is used at the alarm contact, the following errors will occur easily because counter electromotive force is generated at the contact.

• Deposition, defective insulation or defective contact at the relay contact

• Damage of any electric parts due to high-voltage generated inside the indicator/alarm unit

• Abnormal operations by an out-of-control CPU

CAUTION

• In principle, do not activate inductive load at the alarm contact of the indicator/alarm unit. (In particular, never use the inductive load to activate a fluorescent lamp or motor.)

• If inductive load is activated, relay it with an external relay (contact amplification). However, because the coil of an external relay also involves inductive load, select a relay at a lower voltage (100 VAC or below), and then protect the contact of the indicator/alarm unit with an appropriate surge absorbing part, such as a CR circuit.

• Provide protection by a lightning arrester (cable arrester). (Although inductive lightning surge can be transmitted through the cable, it is prevented by installing a lightning arrester before the field devices and central processing equipment. For information on how to use a lightning arrester, please contact the manufacturer.)

In addition to lightning, there are more sources of surge noise. To protect units from these noise sources, the units must be grounded.

- 17 - RM-5000

4 How to Use 4-3. Precautions for system designing

If load is to be activated, appropriate measures must be taken to stabilize the operation of the indicator/alarm unit and protect the alarm contact referring to the following information.

• Relay it with an external relay at a lower voltage of 100 VAC or below (contact amplification). At the same time, the surge absorbing part SK1 suitable for the specifications must be attached to the external relay.

• In addition, the surge absorbing part SK2 must be attached to the loaded side of the external relay if necessary.

• It may be recommended that the surge absorbing part should be attached to the contact for certain load conditions. It must be attached to an appropriate position by checking how the load is activated.

RM-5000

SK1 SK2

Coil

Load

larm contact

Power

supply

External relay

(low voltage relay)

* SK1, SK2: Surge absorbing parts

Power

supply

RM-5000 - 18 -

4 How to Use 4-4. How to install

4-4. How to install

NOTE

When installed in two rows vertically

Single-point panel cutout dimensions

200 or more

Panel thickness

- 19 - RM-5000

4 How to Use 4-4. How to install

When installed in one row vertically and N columns horizontally

Multi-point panel cutout dimensions

Panel thickness

N: Buzzer unit + Indicator/alarm unit

After drilling holes in the panel to install a single-unit case, attach the indicator/alarm unit according to the following procedure. (1) Insert the single-unit case from the rear terminal plate side to the panel front side. (2) Set fixing bracket on the upper and lower parts of the single-unit case. (3) Tighten the screws of the fixing bracket.

CAUTION

• Tightening the screws to a high torque may deform the case or damage the fixing bracket.

• Turn off the power of the indicator/alarm unit before attaching or detaching it. Otherwise, a failure

may be caused.

RM-5000 - 20 -

4 How to Use 4-5. How to wire

4-5. How to wire

CAUTION

• Use the specified cables for each of the connections between the indicator/alarm unit and the

detector head.

• When wiring, be careful not to apply stresses on the terminal plate when (overweight) cables are installed.

• The power cables and signal cables must not be installed together with the motor power cables, etc.

• When stranded wires are used, prevent wires from contacting each other.

• Use the specified tools to wire.

Model Cable specifications

GP-5001 NC-5001 NC-5001W SP-5001

NP-5001 Power supply: Equivalent to CVV (1.25 sq or 2.0 sq) - 2-core

OX-5001 OX-5002 RM-5002

GH-5001 Power supply: Equivalent to CVV (1.25 sq or 2.0 sq) - 2-core

EC-5002 Power supply: Equivalent to CVV (1.25 sq or 2.0 sq) - 2-core

RM-5003 Power supply: Equivalent to CVV (1.25 sq or 2.0 sq) - 2-core

Power supply: Equivalent to CVV (1.25 sq or 2.0 sq) - 2-core Detector head: Equivalent to CVV (1.25 sq or 2.0 sq) - 4-core or 6-core Signal: Equivalent to CVVS (1.25 sq or 2.0 sq) - 2-core Contact: Equivalent to CVV (1.25 sq or 2.0 sq) - max. 6-core

Detector head: Equivalent to CVVS (1.25 sq or 2.0 sq) - 4-core or 6-core Signal: Equivalent to CVVS (1.25 sq or 2.0 sq) - 2-core Contact: Equivalent to CVV (1.25 sq or 2.0 sq) - max. 6-core

Power supply: Equivalent to CVV (1.25 sq or 2.0 sq) - 2-core Detector head: Equivalent to CVVS (1.25 sq or 2.0 sq) - 2-core Signal: Equivalent to CVVS (1.25 sq or 2.0 sq) - 2-core Contact: Equivalent to CVV (1.25 sq or 2.0 sq) - max. 6-core

Detector head: Equivalent to CVVS (1.25 sq or 2.0 sq) - 3-core or 5-core Signal: Equivalent to CVVS (1.25 sq or 2.0 sq) - 2-core Contact: Equivalent to CVV (1.25 sq or 2.0 sq) - max. 6-core

Detector head: Equivalent to CVVS (1.25 sq or 2.0 sq) - 2-core or 4-core Signal: Equivalent to CVVS (1.25 sq or 2.0 sq) - 2-core Contact: Equivalent to CVV (1.25 sq or 2.0 sq) - max. 6-core

Detector head: Equivalent to CVVS (1.25 sq or 2.0 sq) - 3-core Signal: Equivalent to CVVS (1.25 sq or 2.0 sq) - 2-core Contact: Equivalent to CVV (1.25 sq or 2.0 sq) - max. 6-core

- 21 - RM-5000

4 How to Use 4-5. How to wire

NOTE

Power input

Detector head

Reset signal input (*3)

First alarm contact output

Test input (*3)

24 VDC

Terminal plate

Buzzer stop Signal input (*3)

Common (*3)

First alarm signal output (*1, *3)

Second alarm signal output (*1, *3)

Fault alarm signal output (*1, *3)

Buzzer signal output (*1, *3)

Second alarm contact output

Fault alarm contact output

Connector for between

4 - 20 mA output

single-unit cases (*3)

Grounding terminal

RS-485 input-output (*2, *3)

*1: A signal to be used between the indicator/alarm unit and the buzzer unit TAN-5000 (option). This is not

used by the user. *2: Output only if RS-485 (option) is mounted. *3: Used for transition wiring for signals between devices when single-unit cases (option) are connected.

When this connector is used, no transition wiring between cases is required at the terminal plate.

RM-5000 - 22 -

4 How to Use 4-5. How to wire

Specifications of terminal plate

• Rated voltage: 250 VAC

• Rated current: 12 A

Driver slot Wire insertion hole

- 23 - RM-5000

4 How to Use 4-5. How to wire

•

Connection conditions

• Cable: 0.08 - 2.5 mm

• Bare wire length: 8 - 9 mm

• Connecting tools: Dedicated screwdrivers manufactured by WAGO and equivalent (edge width 3.5 x 0.5

mm or less)

CAUTION

The specified bare wire length must be observed when the wire insulation is peeled off. Improper clamping of the wire due to a shorter bare wire length may cause defective electric conduction or heating. Catching the wire insulation due to a shorter bare wire length may cause defective electric conduction or heating. Exposing the wire due to a longer bare wire length may cause defective insulation or a short circuit. Be careful not to break up the wire. If the wire is broken up when inserted to the terminal, this may cause defective insulation or heating.

Compatible bar terminal For a bar terminal, the following items are available.

• Bar terminal (ferrule): Model 216 Series (manufactured by WAGO)

• Crimping tool: Model VarioCrimp 4 (206-204) (manufactured by WAGO)

CAUTION

A bar terminal of the specified model must be used. Using other bar terminals invalidates the warranty of the performance.

z Dedicated products

210-120J: ..... Standard model

210-350/01:.. Short model

210-258J: ..... Angle model

8 - 9 mm

When using a general-purpose

screwdriver, use one with an edge width from 2.5 mm to 3.5 mm. Do not use a screwdriver that does not fit into the screwdriver slot or cannot open the spring properly.

RM-5000 - 24 -

4 How to Use 4-5. How to wire

When cables are connected to the terminal plate, use the dedicated screwdriver or a compatible flathead screwdriver to do so as shown below.

CAUTION

The right tools must be used. Only one wire can be connected to one wiring hole. When the wire is inserted into the driver slot by mistake, it does not contact the conductive part. This may cause defective electric conduction or heating. When the wire is inserted under the spring by mistake, it does not contact the conductive part. This may cause defective electric conduction or heating.

 Wiring: Perform wiring as shown in the figure below.

(1) Insert the screwdriver at an

angle into the operating slot (square hole).

(4) Properly peel off a wire and

insert it into the wiring hole (round hole). The wire will go in smoothly if you insert the wire along the edge of the round hole.

(2) While standing the

screwdriver upright, insert it all the way securely.

(5) When the wire is inserted as

far as it will go, pull out the screwdriver while holding the wire.

(3) If you have done the previous

steps properly, the screwdriver is kept upright when you let it go.

(6) To check whether the wire is

connected securely, pull the wire gently. (Do not pull the wire strongly.)

 Removal: In the same way as for the wiring procedure, insert the screwdriver to remove the wire.

- 25 - RM-5000

4 How to Use 4-5. How to wire

Connect the indicator/alarm unit to your grounding terminal.

WARNING

Before turning on the indicator/alarm unit, never fail to connect it to a grounding terminal. For stable operation of the indicator/alarm unit and safety, it must be connected to a grounding terminal. Do not connect the grounding wire to a gas pipe. The grounding must be made as D type grounding (below 100 Ω of grounding resistance).

Grounding

terminal

Terminal plate

RM-5000 - 26 -

4 How to Use 4-5. How to wire

GP-5001, NC-5001, NC-5001W, SP-5001

NP-5001

GP-5001

Gas detector head

5 AC 6 AC

Power supply

for pump 100 VAC

Gas detector head

5 AC 6 AC

NP-5001

Power supply

for pump 100 VAC

- 27 - RM-5000

4 How to Use 4-5. How to wire

OX-5001, OX-5002

Gas detector head

+ -

OX-5001

Detector head signal OX-5001: Sensor direct signal OX-5002: Current signal (4 - 20 mA DC)

NOTE

To construct an intrinsically safe explosion-proof system by connecting the indicator/alarm unit to a gas detector head with an intrinsically safe explosion-proof structure, connect the dedicated Zener Barrier between them. Read also the operating manual of the gas detector head.

GH-5001

Gas detector head

4 5 AC AC

GH-5001

Power supply

for pump 100 VAC

RM-5000 - 28 -

4 How to Use 4-5. How to wire

EC-5002

Gas detector head

-+ AC AC

EC-5002

Power supply

for pump 100 VAC

NOTE

RM-5002

Gas detector head that outputs general

measurement signals

+ -

- 29 - RM-5000

4 How to Use 4-5. How to wire

RM-5003

24 VDC

- +

Gas detector head

Sig

RM-5003

RM-5000 - 30 -

5 How to Operate 5-1. Preparation for start-up

How to Operate

5-1. Preparation for start-up

Before connecting a power supply, read and understand the following precautions. Ignoring these precautions may cause an electric shock or damage the indicator/alarm unit.

• Check that the wiring is connected to external device properly.

• Check that the power supply voltage is compliant with the specifications.

• Because the external contact may be activated during the adjustment, take measures to prevent an

activated contact from having influences on external circuits.

- 31 - RM-5000

5 How to Operate 5-2. Basic operating procedures

5-2. Basic operating procedures

Normally, the detection mode is used for normal operations. (The detection mode is activated after the power is turned on.)

Lamp on Lamp off Lamp blinking

MODE (long pressing)

The indicator/alarm unit is restarted after recovering from fault.

<<Detection Mode>>

During maintenance

During inhibit

<<Gas Alarm Status>>

<<Fault Alarm Status>>

<<Gas Alarm Test Mode>>

<<Maintenance Mode (regular maintenance mode)>>

TEST (long pressing)

<<Maintenance Mode (user mode)>>

MODE (long pressing)

WARNING

When the indicator/alarm unit enters each mode from the detection mode while an alarm is activated, the alarm contact is released.

RM-5000 - 32 -

5 How to Operate 5-3. How to start the indicator/alarm unit

5-3. How to start the indicator/alarm unit

• Before turning on the power switch, check whether the indicator/alarm unit is installed properly.

• Open the front cover of the indicator/alarm unit to find the power switch.

• Turn ON the power switch.

• After the indicator/alarm unit completes the start-up, it enters the detection mode swiftly.

<<Start-up Procedures (approximately 25 seconds for system check of the indicator/alarm unit and alarm deactivation)>>

Power switch

Slide

OFF

Front cover

Power-on

(All lights ON)

Initial clear

Gas specifications display

(Gas name and full scale value)

Detection mode

(Gas name, detected concentration value)

Lamp on Lamp off Lamp blinking

During maintenance

During inhibit

- 33 - RM-5000

5 How to Operate 5-4. Modes

CAUTION

• Do not turn off the indicator/alarm unit during the initial clear.

• If a new sensor is installed or the sensor is replaced after the indicator/alarm unit is started, the

sensor must be warmed up for a specified period which is determined depending on the type of the sensor. After the warm-up is completed, perform a gas calibration. Read also the operating manual of the gas detector head.

• During the warm-up, the alarm activation and output signals are unstable. Provide a prior notification to the related sections so that they can prepare for false abnormalities.

5-4. Modes

Details on each mode are provided as follows. (* Operations are slightly different depending on the model.)

Mode Item LCD display Details Detection Mode

Gas Alarm Test Mode Maintenance Mode (User)

Maintenance Mode (Regular maintenance)

- Gas

Zero Adjustment (Span Adjustment) Setting Display 1-2.CONFIRM Show the setting of the typical menu.

Peak Value Display 1-3 PEAK Display the peak concentration value when a gas is detected. Main Unit Version Display 1-4 RM VER Show the program version of the main unit.

AMP Version Display 1-5 AMP VER Show the program version of the amplifier unit. RS-485 Address Display 1-6 ADDRESS Show the address. RS-485 Communication Setting Display Regular Maintenance Mode Switching Gas Introduction Display 2-0 GAS TEST Perform the gas introduction test in the regular maintenance mode. Zero Adjustment 2-1 ZERO Perform the zero adjustment. Span Adjustment 2-2 SPAN Perform the span adjustment. Last Calibrated Date 2-3 LAST CAL Show the last calibrated date. Heater Current Display 2-4 CUR CAL Show the heater current. Environmental Setting 1 2-5 SETTING1 Operation setting

Environmental Setting 2 2-6 SETTING2 Functions setting

Environmental Setting 3 2-7 SETTING3 Adjustment and setting

concentration Gas name

concentration 1-1 ZERO (1-1 SPAN)

1-7 485 PTRN Show the setting status of the communication function.

1-8 M MODE Switch to the regular maintenance mode.

Normal state

Perform the alarm test.

Perform the zero adjustment. (In case of oxygen 0 - 25 %, perform the span adjustment.)

• First alarm setpoint (AL1)

• Second alarm setpoint (AL2)

• Alarm delay time

• Zero suppression value

• Zero follower ON/OFF

• Indicator type

SE 0 INHIBIT setting (INHIBIT) SE 1 Alarm setpoint value setting (ALM P) SE 2 Alarm delay time setting (ALM DLY) SE 3 Fault test (F TEST)

SE 0 Address setting (ADDRESS) SE 1 Date/Time setting (DAY TIME) SE 2 Zero suppression value setting (SUPPRESS) SE 3 Zero suppression type setting (SUP TYPE) SE 4 Contact setting for alarm test (TEST RLY) SE 5 External output setting for alarm test (TEST4-20) SE 6 Energized/De-energized setting (RLY PTRN) SE 7 Alarm type setting (ALM TYP) SE 8 Alarm pattern setting (ALM PTRN) SE 9 Alarm value limiter setting (AL LIMIT) SE10 Fault alarm pattern setting (FLT PTRN) SE11 Zero follower ON/OFF setting (ZERO F) SE12 External output in maintenance mode setting (MNT OUT) SE13 External output adjustment (MA 4-20)

SE 0 Amplifier initialization (AMP DEF) SE 1 Heater current adjustment (HEAT ADJ) SE 2 Load voltage adjustment (LOAD ADJ) SE 3 Measured gas selection (GAS SEL) SE 4 Peak hold setting (PEAKHOLD) SE 5 First alarm LCD setting (ALM1 LCD)

RM-5000 - 34 -

5 How to Operate 5-4. Modes

SE 6 Alarm bar display setting (ALM BAR) SE 7 Double range external output setting (DR OUT) SE 8 Low flow rate setting (FLOW SET) SE 9 External output setting (OUT SET) SE10 RS-485 communication setting (485 PTRN) SE11 Green LED brightness adjustment (GRN ADJ) SE12 Red LED brightness adjustment (RED ADJ)

Fault Detailed View 2-8 FAULT Not used. HART Device Synchronization Setting HART Device Setting 2-10 HART

Return to the user mode 2-11 U MODE Return to the user mode. Factory Mode Switching 2-12 F MODE Not used.

2-9 HART SYN Not used.

SET

SE13 Orange LED brightness adjustment (ORNG ADJ)

Not used.

NOTE

Operations are slightly different depending on the model. Key operations are disabled for the key switches of operation menus not available for the model.

- 35 - RM-5000

5 How to Operate 5-5. Detection mode

5-5. Detection mode

Display a gas name, full scale value, etc. that have been set in advance.

CAUTION

Gas concentration bar

meter display

Gas name

Power lamp

A reading under zero is suppressed with the 10% FS suppression. A reading that is 10% FS or more under zero is displayed as "-0.0", which prevents an accurate gas detection and needs the zero adjustment. For information on the suppression function, see "6-4. Other functions".

NOTE

NC-5001W offers two reading ranges (low and high ranges). If the displayed combustible gas concentration rises above the full scale of the low range, the display is automatically switched to the high range. On the other hand, if the gas concentration drops below the full scale of the low range, the display is automatically switched back to the low range. The low range is indicated by lighting of the WL display, and the high range by lighting of the WH display, informing the present reading range (low or high range).

Example Target gas : Isobutane Reading range : 0-2000 ppm / 0 - 100%LEL Status display :

WL (low range)

WH (high range)

NOTE

At a low temperature, the response of the LCD display may get slow down.

Full scale value

Gas concentration digital

display

RM-5000 - 36 -

5 How to Operate 5-6. Alarm test mode

5-6. Alarm test mode

This is used when dummy signals the same as the signals of the gas concentration are generated to check the alarm lamp activation of the indicator/alarm unit and the transmission to external circuits.

WARNING

Before starting the alarm test (transmission test), provide a notification to the related sections so that they can prepare for false abnormalities (external output signals and alarm contact). After the test is completed, never fail to press the TEST key to return to the detection mode. (If the indicator/alarm unit remains in the alarm test mode, it automatically returns to the detection mode in ten hours.)

<<Alarm Test Mode>>

Detection Mode Press the TEST key for three seconds.

During maintenance

During inhibit

Lamp on Lamp off Lamp blinking

Alarm Test Mode

The message "TEST ON" is displayed when the contact is activated in the alarm test, while the message "TEST OFF" is displayed when not activated. (The setting can be changed.) Increase or decrease the reading by pressing the ▲ or ▼ key.

First Alarm When the reading reaches the first alarm, the ALM1 lamp lights up. (When Contact ON is selected, the first alarm contact is activated.)

Second Alarm When the reading reaches the second alarm, the ALM2 lamp lights up. (When Contact ON is selected, the second alarm contact is activated.)

- 37 - RM-5000

5 How to Operate 5-7. User mode

5-7. User mode

WARNING

After the adjustment is completed, never fail to press the MODE key to return to the detection mode. (If the indicator/alarm unit remains in the user mode, it automatically returns to the detection mode in ten hours.)

<<User Mode>>

Lamp on

Detection Mode Press the MODE key for three seconds.

During maintenance

During inhibit

User Mode

Lamp off Lamp blinking

1-1. ZERO Perform the zero adjustment.

(In case of OX-5001 and OX-5002, perform the span adjustment.)

1-2.CONFIRM Show the setting of the typical menu.

1-3. PEAK Displays the maximum concentration value when a gas is detected.

1-4. RM VER Show the program version of the main unit.

Zero Adjustment => P40

Setting Display => P41

1-5. AMP VER Show the program version of the

MP unit.

1-6. ADDRESS Show the communication address of RS-485.

model with an option mounted)

(Only on a

RM-5000 - 38 -

5 How to Operate 5-7. User mode

1-7. 485 PTRN Show the communication setting of RS-485.

an option mounted)

(Only on a model with

1-8. M MODE Switch to the regular maintenance mode.

See "7-2. Regular maintenance mode".

To 1-1. ZERO

- 39 - RM-5000

5 How to Operate 5-7. User mode

This is used to perform the zero adjustment. Before starting the zero adjustment, let the detector head (sensor) draw the zero adjustment gas and wait until the reading is stabilized. For oxygen deficiency alarm specification (O2:0 - 25%), "1-1" is the span adjustment. In this case, the AIR adjustment is performed, so that fresh air must be introduced to adjust it to 20.9%. For information on the span adjustment, see “7-3. How to perform a gas calibration”.

<<Zero Adjustment>>

1-1. ZERO

Press SET key.

During maintenance

During inhibit

Present Concentration Value Display Press the SET key to perform the zero adjustment.

Zero Adjustment Completed The menu returns to 1-1. ZERO automatically.

Lamp on Lamp off Lamp blinking

Return to 1-1.ZERO

* When the zero adjustment fails

Return to 1-1.ZERO

CAUTION

In case of GH-5001, always perform both the zero adjustment and the span adjustment. Perform the zero adjustment and the span adjustment in this order. If they are performed in a wrong order or only one of them is performed, accurate gas detection cannot be ensured.

RM-5000 - 40 -

5 How to Operate 5-7. User mode

This is used to check the setting of typical menus.

<<Setting Display>>

Lamp on

1-2. CONFIRM

Press SET key.

During maintenance

During inhibit

First Alarm Setpoint Display

Second Alarm Setpoint Display

Lamp off Lamp blinking

Alarm Delay Time Display (seconds)

Zero Suppression Value Display

Zero Follower ON/OFF Display

Indicator Type Display

To First Alarm Setpoint Display

- 41 - RM-5000

5 How to Operate 5-8. How to exit

5-8. How to exit

To turn off the indicator/alarm unit, open the front cover of the main unit, and turn "OFF" the power switch. Then, turn off the power supply (24 VDC) to the indicator/alarm unit.

WARNING

• When the indicator/alarm unit is turned off, an alarm may be activated on the upper (central) system. Before turning off the indicator/alarm unit, the inhibit (point skip) on the upper (central) system must be activated. Decide whether the power can be turned off by checking the operation of the devices connected to the external output or external contact output terminal of the indicator/alarm unit.

• If the alarm contact is energized (option), it is activated when the indicator/alarm unit is turned “OFF”.

RM-5000 - 42 -

6 Operations and Functions 6-1. Gas alarm activation

Operations and Functions

6-1. Gas alarm activation

Gas alarm: Triggered when the concentration of detected gas reaches or exceeds the alarm setpoint value. <<Self-latching>>

NOTE

The alarm setpoint (first alarm and second alarm) is factory-set. Although the alarm delay time (standard: 2 seconds) works in the indicator/alarm unit to prevent a false activation, it can be cancelled if not needed.

Gas Concentration Display

In case of over the detection range (Over Scale), "∩∩∩∩" is displayed on the LCD.

Power Indicator Lamp (POWER: Green)

This lights up continuously.

- 43 - RM-5000

6 Operations and Functions 6-1. Gas alarm activation

Alarm Indicator Lamp (ALM1: Red), (ALM2: Red)

The alarm consists of two steps. Each of them is triggered when the respective alarm setpoint value is reached to or exceeded. The alarm indicator lamp goes out when the gas concentration settles below the alarm setpoint after a reset operation.

First alarm Second alarm

The alarm contact consists of two steps. Each of them is triggered when the respective alarm setpoint value is reached to or exceeded. The alarm contact is reset when the gas concentration settles below the alarm setpoint after a reset operation.

RM-5000 - 44 -

6 Operations and Functions 6-1. Gas alarm activation

"Alarm Pattern Example (H-HH)"

Normal Alarm Recovered

Gas concentration

ALM1 alarm lamp (red)

ALM2 alarm lamp (red)

ALM1 alarm contact

ALM2 alarm contact

SP. HH side (second) SP. H side (first)

Reset

Bar meter display

ALM1 alarm lamp (red)

ALM2 alarm lamp (red)

ALM1 alarm contact

ALM2 alarm contact

Bar meter display

ALM1 alarm lamp (red)

ALM2 alarm lamp (red)

ALM1 alarm contact

ALM2 alarm contact

Bar meter display

Green Orange Red

Orange

Green

Reset

Green Orange Red

Orange

Green

Reset

Green Orange Red Orange Green

ALM1 alarm lamp (red)

ALM2 alarm lamp (red)

ALM1 alarm contact

ALM2 alarm contact

Bar meter display

Fault

FAULT lamp (yellow)

Fault alarm contact

Reset

Green Orange Red Green

Reset

- 45 - RM-5000

6 Operations and Functions 6-1. Gas alarm activation

"Alarm Pattern Example (L-LL)"

Normal Alarm Recovered

Gas concentration

SP. L side (first) SP. LL side (second)

Reset

ALM1 alarm lamp (red)

ALM2 alarm lamp (red)

ALM1 alarm contact

ALM2 alarm contact

Bar meter display

ALM1 alarm lamp (red)

ALM2 alarm lamp (red)

ALM1 alarm contact

ALM2 alarm contact

Bar meter display

ALM1 alarm lamp (red)

ALM2 alarm lamp (red)

Green Orange Red

Orange

Green

Reset

Green Orange Red

Orange

Green

Reset

ALM1 alarm contact

ALM2 alarm contact

Bar meter display

ALM1 alarm lamp (red)

ALM2 alarm lamp (red)

ALM1 alarm contact

ALM2 alarm contact

Bar meter display

Fault

FAULT lamp (yellow)

Fault alarm contact

Bar meter display

Green Orange Red

Orange

Green

Reset

Green Orange Red Green

Reset

RM-5000 - 46 -

6 Operations and Functions 6-2. Fault alarm activation

In case of responding to a leaked gas When a gas alarm is triggered, take actions in accordance with your management rules of gas alarm. Normally, take the following actions.

• Check the reading of the indicator/alarm unit.

NOTE

If a gas leak is momentary, the reading may already have dropped when you check it. In addition, when the alarm is triggered by noise or other incidental conditions other than a gas, the reading may have already dropped.

• Based on your management rules of gas alarm, no one should be allowed to access the monitored zone to ensure safety.

• If the Gas Concentration Display continues to be shown, close the main valve of the gas, and then check that the gas concentration reading is dropped.

• Assuming that gases remain, wear protective equipment to avoid dangers and go to the gas leak point, and then check if gases remain using a portable gas detector etc.

• If you can determine that the point is free from dangers, take actions to fix the gas leak.

6-2. Fault alarm activation

A fault alarm is triggered when the indicator/alarm unit detects abnormalities <<Auto-Reset>>. After a fault alarm is triggered, the FAULT lamp (yellow) blinks and an error message is displayed on the LCD. Determine the causes and take appropriate actions. After the indicator/alarm unit is successfully returned from the fault, it restarts with the process normally performed right after it is turned on (initial clear). If the indicator/alarm unit has problems and is repeatedly malfunctioning, contact RIKEN KEIKI immediately.

* Display example: E-1 DETECTOR

sensor abnormality

NOTE

For information on malfunctions (error messages), see "9. Troubleshooting".

- 47 - RM-5000

6 Operations and Functions 6-3. External output operation

6-3. External output operation

Specifications 4 - 20 mA RS-485 (option) Signal Transmission System Electric current transmission (non-isolated) Two-wire digital data transmission

system Transmission Path CVVS KPEV-S Transmission Distance Below 1 km (Depending on the system designing

conditions) Connection Load Resistance Below 300 Ω -

(1) Detection Mode (No Alarm) 4 - 20 mA (concentration output) Concentration data (2) Detection Mode (Gas Alarm) 4 - 20 mA (concentration output) Concentration data, Alarm bits (3) Initial Clear

(4) Maintenance mode 2.5 mA setting: 2.5 mA

(5) Alarm Test Output ON setting: 4 - 20 mA (concentration output)

(6) Fault Alarm 0.5 mA (Fixed) Fault bits (7) Inhibit

(8) Power Off 0 mA Signal OFF

* OX-5001,OX-5002: 0 - 25 vol% is equivalent of AIR (20.9 vol% = 17.4 mA)

Depending on the setting of (4)

2.5 mA setting: 2.5 mA 4 mA, HOLD, 4 - 20 mA setting

4 mA setting HOLD setting 4-20 mA setting

Output OFF setting

Depending on the setting of (4)

2.5 mA setting: 2.5 mA 4 mA, HOLD, 4 - 20 mA setting

: 4 mA*

: The previous value retained

: 4 - 20 mA (concentration output)

: Depending on the setting of (4)

: 4 mA*

Example of Gas Concentration and External Output (4 - 20 mA)

CAUTION

<<4 - 20 mA>>

• The 4 - 20 mA output is already adjusted. In case of over scale, an output will not exceed 22 mA.

• Output during inhibit or initial clear is based on 4 - 20 mA output setting in the maintenance mode.

<GP-5001, NC-5001, NP-5001, SP-5001, GH-5001, EC-5002, OX-5001, OX-5002>

External output

22 mA 20 mA

4 mA

2.5 mA

Initial bit

Concentration data, Adjustment bit

Concentration data, Adjustment bit, Test

bit

Concentration data, Adjustment bit,

Inhibit bit

Detection mode

Maintenance mode

Zero suppression

RM-5000 - 48 -

Full scale

Gas concentration

6 Operations and Functions 6-3. External output operation

<NC-5001W>

External output

22 mA 20 mA

Detection mode

16 mA

Maintenance mode

4 mA

2.5 mA

Zero

suppression

Low

range

High range

Gas concentration

Full scale

NOTE

Example Target gas : Isobutane Reading range : 0-2000 ppm / 0 - 100%LEL Status display :

WL (low range)

WH (high range)

- 49 - RM-5000

6 Operations and Functions 6-4. Other functions

6-4. Other functions

Some types of detector heads connected to the indicator/alarm unit are influenced by environmental changes (temperature, humidity, and other characteristics) or interference gases (interference characteristics) in no small measure, which affects the reading. Therefore, the reading might fluctuate around zero even in a normal state with no gas leakage. This function obscures influences by environmental changes and interference gases around zero that have no meaning for your management rules of gas alarm.This function is used to hide (suppress) the fluctuation of the reading under the setting value, indicating zero.

<<Example: CH4 0 – 100% LEL Specifications>>

5%LEL

Suppression Disabled A fluctuation around zero is displayed as the reading.

CH4

↓ 0%LEL

CH4

NOTE

• In the maintenance mode, this function is disabled and the fluctuation of the reading under the setting value is displayed.

• When a sensor unit with the oxygen deficiency alarm (O2: 0 - 25 vol%) is equipped, the zero suppression is shifted to AIR suppression (20.9 vol%) automatically. That is, a small variation of the reading around 20.9 vol% is displayed as 20.9 vol%.

CAUTION

Some types of detector heads connected to the indicator/alarm unit might have sensitivity variations after being used for a long period. This function corrects the fluctuation of the reading at the zero point (zero drift) among the sensitivity variations over time by a program manipulation to stabilize the zero point.

Zero Follower Off Zero Follower On

* The zero drift of the sensor appears as the

reading.

Zero point

Suppression Enabled A fluctuation under the setting value is hidden with zero. (Zero suppression)

⇒

Time

* The zero-adjustment is made periodically.

Zero point

Time

RM-5000 - 50 -

6 Operations and Functions 6-4. Other functions

The maximum (or minimum) concentration value after an alarm is triggered is displayed using the bar meter blinking and a numeric value even after the reading returns to a normal status. The numeric value is displayed in 1-3.PEAK in the maintenance mode (user). To disable the peak display, keep the SET key pressed in 1-3.PEAK in the maintenance mode (user).

Peak display

The indicator/alarm unit has history functions. To use these functions, please contact RIKEN KEIKI.

- 51 - RM-5000

7 Maintenance 7-1. Maintenance intervals and items

Maintenance

The indicator/alarm unit is an important instrument for the purpose of safety. To maintain the performance of the indicator/alarm unit and improve the reliability of safety, perform a regular maintenance.

NOTE

To use the multi-unit case, also refer to the separate operating manual.

7-1. Maintenance intervals and items

• Daily maintenance: Perform maintenance before beginning to work.

• Monthly maintenance: Perform maintenance on the alarm circuit (alarm test) once a month.

• Regular maintenance: Perform maintenance once or more for every six months to maintain the

performance as a safety unit.

Maintenance

item Power Supply Check

Concentration Display Check

Alarm Test

Maintenance content

Check that the power lamp lights up.

Check that the concentration display value is zero (or 20.9% on the oxygen deficiency meter). When the reading is incorrect, perform the zero adjustment after ensuring that no other gases exist around the detector head. Inspect the alarm circuit by using the alarm test function.

Daily

maintenance

{ { {

–

Monthly

maintenance

{ {

Regular

maintenance

RM-5000 - 52 -

7 Maintenance 7-1. Maintenance intervals and items

• We provide services on regular maintenance including span adjustment, other adjustments and maintenance. To make the calibration gas, dedicated tools, such as a gas cylinder of the specified concentration and gas sampling bag must be used. Our qualified service engineers have expertise and knowledge on the dedicated tools used for services, along with other products. To maintain the safety operation of the indicator/alarm unit, please use our maintenance service.

• The followings are typical maintenance services. Please contact RIKEN KEIKI for more information.

Main Services Power Supply

Check

Concentration Display Check

Flow Rate Check : Checks the flow rate indicator to find abnormalities.

Filter Check : Checks the dust filter for dust or clogging.

Alarm Test :

Span Adjustment : Performs the span adjustment by using the calibration gas.

Gas Alarm Check :

Cleaning and Repair of Device (visual diagnosis)

Device Operation Check

Replacement of Consumable Parts

: Checks the power supply voltage.

Verifies that the power lamp lights up. (Verifies that relevant points can be identified on the system.) (When a UPS (uninterruptible power system) is used, checks the operation with the UPS.)

: Verifies that the concentration display value is zero (or 20.9 vol% on the oxygen deficiency meter) by

using the zero gas. Performs the zero adjustment (fresh air adjustment) if the reading is incorrect.

Checks the flow rate by using an external flow meter to verify the correctness of the flow rate indicator on the device. If the flow rate is incorrect, performs the flow rate adjustment.

Replaces a dirty or clogged dust filter.

Inspects the alarm circuit by using the alarm test function.

• Checks the alarm lamps. (Checks each activation of ALM1 and ALM2.)

• Checks the external alarm. (Checks the activation of the external alarm, such as a buzzer.)

Checks the gas alarm by using the calibration gas.

• Checks the alarm. (Checks the alarm activation when the alarm setpoint is reached.)

• Checks the delay time. (Checks time to delay until the alarm is triggered.)

• Checks the alarm lamps. (Checks each activation of ALM1 and ALM2.)

• Checks the external alarm. (Checks the activation of external alarms, such as a buzzer and reset

signal.)

: Checks dust or damage on surface, cover, or internal parts of the indicator/alarm unit, cleans and

repairs such parts of the device. Replaces parts which are cracked or damaged.

: Uses the keys to check the operation of functions and parameters.

: Replaces consumable parts, such as a sensor, filter and pump.

- 53 - RM-5000

7 Maintenance 7-2. Regular maintenance mode

7-2. Regular maintenance mode

WARNING

After the adjustment is completed, never fail to press the MODE key to return to the detection mode. (If the indicator/alarm unit remains in the maintenance mode, it automatically returns to the detection mode in ten hours.)

Mode Item LCD display Details Maintenance Mode (Regular maintenance)

NOTE

Operations are slightly different depending on the model. Key operations are disabled for the key switches of operation menus not available for the model.

Gas Introduction Display 2-0 GAS TEST Perform the gas introduction test in the regular maintenance

mode. Zero Adjustment => P70 Span Adjustment => P71 Last Calibrated Date 2-3 LAST CAL Show the last calibrated date. Heater Current Display 2-4 CUR CAL Display the heater current value.

Environmental Setting 1 => P58

Environmental Setting 2 => P60

Environmental Setting 3 => P65

Fault Investigation 2-8 FAULT Not used. HART Device Synchronization Setting HART Device Setting 2-10 HART SET Not used. Return to the user mode. 2-11 U MODE Returns to the user mode "1-1". Factory Mode Switching 2-12 F MODE Not used.

2-1 ZERO Perform the zero adjustment.

2-2 SPAN Perform the span adjustment.

2-5 SETTING1 Operation setting

SE 0 INHIBIT setting (INHIBIT)

SE 1 Alarm setpoint value setting (ALM P) => P58

SE 2 Alarm delay time setting (ALM DLY)

SE 3 Fault test (F TEST) => P58

2-6 SETTING2 Functions setting

SE 0 RS-485 address setting (ADDRESS)

SE 1 Date/Time setting (DAY TIME) => P62

SE 2 Zero suppression value setting (SUPPRESS)

SE 3 Zero suppression type setting (SUP TYPE)

SE 4 Contact setting for alarm test (TEST RLY)

SE 5 External output setting for alarm test (TEST4-20)

SE 6 Energized/De-energized setting (RLY PTRN) => P63

SE 7 Alarm type setting (ALM TYP)

SE 8 Alarm pattern setting (ALM PTRN)

SE 9 Alarm value limiter setting (AL LIMIT)

SE10 Fault alarm pattern setting (FLT PTRN)

SE11 Zero follower ON/OFF setting (ZERO F)

SE12 External output in maintenance mode setting (MNT OUT)

SE13 External output adjustment (MA 4-20)

2-7 SETTING3 Functions setting

SE 0 Amplifier initialization (AMP DEF)

SE 1 Heater current adjustment (HEAT ADJ)

SE 2 Load voltage adjustment (LOAD ADJ)

SE 3 Measured gas selection (GAS SEL)

SE 4 Peak hold setting (PEAKHOLD)

SE 5 First alarm LCD setting (ALM1 LCD)

SE 6 Alarm bar display setting (ALM BAR)

SE 7 Double range external output setting (DR OUT)

SE 8 Low flow rate setting (FLOW SET)

SE 9 External output setting (OUT SET)

SE10 RS-485 communication setting (485 PTRN)

SE11 Green LED brightness adjustment (GRN ADJ)

SE12 Red LED brightness adjustment (RED ADJ)

SE13 Orange LED brightness adjustment (ORNG ADJ)

2-9 HART SYN Not used.

RM-5000 - 54 -

7 Maintenance 7-2. Regular maintenance mode

<<Regular Maintenance Mode>>

Lamp on

User Mode In "1-8.M MODE", press the SET key.

Then press the SET key again for three seconds.

Regular Maintenance Mode

2-0. GAS TEST Perform a test with the gas. Similar to the detection mode, the reading changes and the alarm lamp lights up after the gas is introduced, but the contact is not activated.

During maintenance

During inhibit

(Alternate Display)

Lamp off Lamp blinking

2-1. ZERO Perform the zero adjustment.

2-2. SPAN Perform the span adjustment.

2-3. LAST CAL Show the last calibrated date. (Example: 2011/01/01 12:00)

2-4. HEAT CUR Display the value of a current that runs in the heater of the sensor. (GP-5001, NC-5001, NC-5001W, GH-5001 only)

Zero Adjustment => P69

Span Adjustment => P70

2-5. SETTING1 Specify the environmental setting 1.

Environmental Setting 1 => P57

- 55 - RM-5000

7 Maintenance 7-2. Regular maintenance mode

2-6. SETTING2 Specify the environmental setting 2.

2-7. SETTING3 Specify the environmental setting 3.

2-8. FAULT This is used (by the manufacturer) to investigate and analyze the causes of faults. This is not used by the user.

2-9. HART SET Used for synchronization setting of HART devices.(Only on a model with an option mounted)

Environmental Setting 2 => P59

Environmental Setting 3 => P64

2-10. HART SET Used for setting of HART devices.(Only on a model with an option mounted)

2-11. M MODE Used to return to the user mode.

2-12. F MODE Changes to the factory mode. This is not used by the user.

To 2-0.GAS TEST

RM-5000 - 56 -

7 Maintenance 7-2. Regular maintenance mode

In the environmental setting 1, specify the operation setting. <<Environmental Setting 1>>

Lamp on

2-5. SETTING1

Press SET key.

During maintenance

During inhibit

SE 0. INHIBIT Set Inhibit. Press the ▲ or ▼ key to select either ON/OFF, and then press the SET key to confirm the selection. When ON is selected, the character I is displayed on the LCD. As a result, an alarm is not triggered to external circuits even though the indicator/alarm unit is in the detection mode.

Lamp off Lamp blinking

SE 1. ALM P Set the alarm setpoint value.

SE 2. ALM DLY Set the alarm delay time. Press the ▲ or ▼ key to change the value (second), and then press the SET key to confirm the value.

SE 3. F TEST Perform a fault alarm test.

To SE 0.INHIBIT Setting

larm setpoint value setting

=> P58

Fault Alarm Test => P58

- 57 - RM-5000

7 Maintenance 7-2. Regular maintenance mode

<<Alarm Setpoint Value Setting>>

Lamp on

SE 1. ALM P

Press SET key.

During maintenance

During inhibit

First Alarm Setpoint Value

Setting

Press the ▲ or ▼ key to change

the value, and then press the

SET key to confirm the value.

Second Alarm Setpoint Value

Setting

Press the ▲ or ▼ key to change

the value, and then press the

SET key to confirm the value.

Lamp off Lamp blinking

Return to SET 1.ALM P

SE 3.F TEST Press SET key.

During maintenance

During inhibit

Fault Test ON/OFF Select either ON/OFF. Press the ▲ or ▼ key to select ON in the display, and then press the SET key to activate the fault alarm. Select OFF in the display and press the SET key to deactivate this menu.(Alternatively, press the MODE key to deactivate this menu.)

WARNING

Because the contact (fault) can be activated only by a fault alarm test in the maintenance mode, be careful to perform the test. The fault alarm test cannot be performed during inhibit ( I ).

Lamp on Lamp off Lamp blinking

RM-5000 - 58 -

7 Maintenance 7-2. Regular maintenance mode

In the environmental setting 2, specify the settings of functions. (* It is recommended that setting changes should be recorded in a log.) The environmental setting 2 includes setting menus which are usually not used. Be careful not to change these settings by mistake. <<Environmental Setting 2>>

Lamp on

2-6. SETTING2 Press SET key.

SE 0. ADDRESS Set the RS-485 communication address.(Model with an option mounted) Press the ▲ or ▼ key to change the value, and then press the SET key to confirm the value.

SE 1. DAY TIME Set the RS-485 communication Set the date/time of the main unit.

During maintenance

During inhibit

Date/Time Setting => P62

Lamp off Lamp blinking

SE 2. SUPPRESS Set the suppression value. Press the ▲ or ▼ key to change the value, and then press the SET key to confirm the value.

SE 3. SUP TYPE Set the suppression type. Press the ▲ or ▼ key to select either CUT/SLOPE, and then press the SET key to confirm the selection. When CUT (Cut Off) is selected, values exceeding the suppression value are directly displayed. When SLOPE (Slope) is selected, values exceeding the suppression value are gently displayed.

SE 4. TEST RLY Set the contact activation for an alarm test. Press the ▲ or ▼ key to select either ON/OFF, and then press the SET key to confirm the selection. When ON is selected, the contact can be activated during an alarm test.

SE 5. TEST4-20 Set the external output for an alarm test.

- 59 - RM-5000

7 Maintenance 7-2. Regular maintenance mode

Press the ▲ or ▼ key to select either ON/OFF, and then press the SET key to confirm the selection. When ON is selected, the test concentration is output as the external output during an alarm test. When OFF is selected, the output is kept at the one before the alarm test mode is entered.

SE 6. RLY PTRN Select either energized/de-energized for the contact.

SE 7. ALM TYPE Set the alarm type.(You can select either L-LL, L-H, or H-HH.)

SE 8. ALM PTRN This is a setting screen of the gas alarm pattern. Do not change the setting when the indicator/alarm unit is used in a normal way, because it determines how the indicator/alarm unit functions. (Initial setting: Self-latching "L")

Energized/De-energized Contact Setting

=> P63

SE 9. AL LIMIT This is a setting screen of the alarm value limiter. Do not change the setting when the indicator/alarm unit is used in a normal way. (Initial setting: ON)

SE 10. FLT PTRN This is a setting screen of the fault alarm pattern. Do not change the setting when the indicator/alarm unit is used in a normal way, because it determines how the indicator/alarm unit functions. (Initial setting: Auto-reset "nL")

SE 11. ZERO F Set the zero follower. Press the ▲ or ▼ key to select either ON/OFF, and then press the SET key to confirm the selection. When ON is selected, the zero follower function is activated.

RM-5000 - 60 -

7 Maintenance 7-2. Regular maintenance mode

SE 12. MNT OUT Set the external output for the maintenance mode. Press the ▲ or ▼ key to select either 2.5 mA/4.0 mA /HOLD (previous value)/4 - 20 mA (linked to display value), and then press the SET key to confirm the selection.

SET 13. MA 4-20

djust the external output (4 -

20 mA).

fter selecting 4 mA or 20 mA, press the SET key to enable adjustment.

fter adjustment of 4 mA is completed, perform the adjustment of 20 mA. Press the ▲ or ▼ key to select the output (%), and then press the SET key to confirm the value.(It must be adjusted to the upper unit or the ammeter. Press the MODE key to skip this menu during the operation.)

To SE 0. ADDRESS

- 61 - RM-5000

7 Maintenance 7-2. Regular maintenance mode

<<Date/Time Setting>>

Lamp on

SE 1. DAY TIME Press SET key.

During maintenance

During inhibit

Date/Time Setting Display Press SET key.

Year Setting Press the ▲ or ▼ key to change the value, and then press the SET key to confirm the value.

Month Setting Press the ▲ or ▼ key to change the value, and then press the SET key to confirm the value.

Lamp off Lamp blinking

Date Setting Press the ▲ or ▼ key to change the value, and then press the SET key to confirm the value.

Hour Setting Press the ▲ or ▼ key to change the value, and then press the SET key to confirm the value.

Minute Setting Press the ▲ or ▼ key to change the value, and then press the SET key to confirm the value.

Return to SE 1. DAY TIME

* In the Date/Time Setting mode, press the MODE key to cancel this menu and go back to the previous

setting.

RM-5000 - 62 -

7 Maintenance 7-2. Regular maintenance mode

<<Energized/De-Energized Contact Setting>>

Lamp on

SE 6. RLY PTRN Press SET key.

During maintenance

During inhibit

First Alarm Contact Setting Press the ▲ or ▼ key to select either nd (de-energized) or nE(energized), and then press the SET key to confirm the selection.

Second Alarm Contact Setting Press the ▲ or ▼ key to select either nd (de-energized) or nE(energized), and then press the SET key to confirm the selection.

Lamp off Lamp blinking

Fault Alarm Contact Setting Press the ▲ or ▼ key to select either nd (de-energized) or nE(energized), and then press the SET key to confirm the selection.

Return to SE 6. RLY PTRN

NOTE

When de-energized is selected, the relay is energized and activated in response to an alarm (de-energized at a normal environment).

• When the contact "a" is used, it is open at a normal environment while closed in response to an alarm.

• When the contact "b" is used, it is activated conversely.

When energized is selected, the relay is energized at a normal environment (de-energized in response to an alarm).

• When the contact "a" is used, it is closed at a normal environment while open in response to an alarm.

In addition, it is When the contact "b" is used, it is activated conversely.

•

open wh

en the power is OFF.

NOTE

To change the settings of the contact specifications (the "a" or "b" contact), please contact RIKEN KEIKI.

- 63 - RM-5000

7 Maintenance 7-2. Regular maintenance mode

Lamp on

2-7. SETTING3 Press SET key.

During maintenance

During inhibit

SE 0. AMP DEF Initialize the amplifier PCB. To initialize the amplifier PCB, press the SET key. (Press the MODE key to cancel this menu.)

SE 1. HEAT ADJ

djust the heater current.(GP-5001, NC-5001, NC-5001W, GH-5001 only) Press SET key to confirm the selection.

Lamp off Lamp blinking

SE 2. LOAD ADJ

djust the load voltage.(GH-5001 only) Press the ▲ or ▼ key to change the value, and then press the SET key to confirm the value.

(6 seconds later)

(3 seconds later)

RM-5000 - 64 -

7 Maintenance 7-2. Regular maintenance mode

SE 3. GAS SEL Select and set the gas name of measured gas and the full scale. Press the ▲ or ▼ key to make a selection, and then press the SET key to confirm the selection.

SE 4. PEAKHOLD Select either ON/OFF of holding the maximum concentration value when a gas is detected. Press the ▲ or ▼ key to select either ON/OFF, and then press the SET key to confirm the selection.

SE 5. ALM1 LCD Select the LCD color (orange or red) when the first alarm is triggered. Press the ▲ or ▼ key to select a color, and then press the SET key to confirm the selection.

Setting of the gas name of measured gas and the full scale.

=> P71

SE 6. ALM BAR Press the ▲ or ▼ key to select either the display or non-display of the alarm setpoint value (bar).

- 65 - RM-5000

7 Maintenance 7-2. Regular maintenance mode

SE 7. DR OUT Set the double range external output.

SE 8. FLOW SET Select either ON or OFF of the low flow rate alarm activation.

SE 9. OUT SET Set the resolution of external output. Press the ▲ or ▼ key to select either the same number of divisions as the display (standard setting) or 1000 divisions, and then press the SET key to confirm the selection.

SE 10. 485 PTRN Set the RS-485 communications.(Only on a model with an option mounted)

RM-5000 - 66 -

7 Maintenance 7-2. Regular maintenance mode

SE 11. GRN ADJ

djust the brightness of the LCD backlight (green LED). Press the ▲ or ▼ key to increase or decrease the value to adjust the brightness, and then press the SET key to confirm the value.

SE 12. RED ADJ

djust the brightness of the LCD backlight (red LED). Press the ▲ or ▼ key to increase or decrease the value to adjust the brightness, and then press the SET key to confirm the value.

SE 13. ORG ADJ

djust the brightness of the LCD backlight (orange LED). Press the ▲ or ▼ key to increase or decrease the value to adjust the brightness, and then press the SET key to confirm the value.

- 67 - RM-5000

7 Maintenance 7-2. Regular maintenance mode

To SE 0. ADDRESS

RM-5000 - 68 -

7 Maintenance 7-3. Gas calibration method

7-3. Gas calibration method

Perform a gas calibration on the detector head (sensor) connected to the indicator/alarm unit in each mode (zero adjustment mode and span adjustment mode) using the calibration gas.

• Zero adjustment gas (collected in a gas sampling bag)

• Span gas (collected in a gas sampling bag)

• Gas sampling bags

WARNING

After the adjustment is completed, never fail to press the MODE key to return to the detection mode.

This is used to perform the zero adjustment on the detector head (sensor).

WARNING

When the zero adjustment is performed in the atmosphere, check the atmosphere around the detector head (sensor) for freshness before beginning the adjustment. If other gases exist, the adjustment cannot be performed properly, thus leading to dangers when the gas leaks.

NOTE

Before starting the zero adjustment, supply the zero adjustment gas to the detector head (sensor) and wait until the reading is stabilized.

<<Zero Adjustment>>

Lamp on

2-1. ZERO

Press SET key.

During maintenance

During inhibit

Lamp off Lamp blinking

Present Concentration Value Display Press the SET key to perform the zero adjustment.

Zero Adjustment Completed Press the SET key to perform the The menu returns to

2-1. ZERO automatically.

* When the zero adjustment fails

Return to 2-1.ZERO

- 69 - RM-5000

7 Maintenance 7-3. Gas calibration method

This is used to perform the span adjustment on the detector head (sensor). For the oxygen deficiency alarm specification (O2: 0 - 25 vol%), this is the same as “1-1”. <<Span Adjustment Display>>

Lamp on

2-2. SPAN Press SET key.

Gas Introduction Introduce a gas to the connected detector head (sensor), and then press the SET key when the reading is stabilized. * In case of less than 10%FS, this is not

switched to the next menu.

Span Adjustment Because the reading will be fixed, adjust the introduced gas concentration by pressing the ▲ or ▼ key. After adjusting the value, press the SET key. (20.9 vol% in the oxygen deficiency alarm specification)

During maintenance

During inhibit

Do not press the SET key before the reading is stabilized.

Lamp off Lamp blinking

Span Adjustment Completed

Adjustment Result Recording To record the adjustment result, press the SET key. (Press the MODE key to cancel this menu.)

Adjustment Completed The menu returns to

2-2. SPAN automatically.

Exhaust gas must be collected in the exhaust bag or discharged through the exhaust line.

* When the span adjustment fails

Return to 2-2. SPAN

RM-5000 - 70 -

7 Maintenance 7-3. Gas calibration method

<<Setting of Gas Name of Measured Gas and Full Scale>>

Lamp on

SET 3. GAS SELECT Press SET key.

During maintenance

During inhibit

Press the ▲ or ▼ key to select the target model "GP", "nc", or "nc d", and then press the SET key to confirm the value. (GP-5001, NC-5001, NC-5001W only)

Setting of Gas Name Press the ▲ or ▼ key to select either of the methods "ud" (up-down input) and "no" (number input), select a gas name, and then press the SET key to confirm the value.

Lamp off Lamp blinking

Return to SE 3. GAS SEL

- 71 - RM-5000

7 Maintenance 7-4. How to clean

7-4. How to clean

Clean the indicator/alarm unit if it becomes extremely dirty. The indicator/alarm unit must be turned off while cleaning it. Use a waste cloth to remove dust. Do not use water or organic solvent for cleaning because they may cause malfunctions.

7-5. How to replace the fuse

Make sure that the power switch of the indicator/alarm unit is OFF. Pull out the fuse from the fuse holder (see the figure on the right). Insert a new fuse in the fuse holder.

WARNING

To prevent fire, use a fuse with the specified ratings for the indicator/alarm unit. Turn the POWER switch OFF and disconnect the power plug from the outlet before replacing a fuse. Do not use an unspecified fuse or short-circuit the fuse holder. For more information on fuses, please contact RIKEN KEIKI.

Fuse holder

Fuse

RM-5000 - 72 -

8 Storage, Relocation and Disposal 8-1. Procedures to store the indicator/alarm unit or leave it for a long time

Storage, Relocation and

Disposal

8-1. Procedures to store the indicator/alarm unit or

leave it for a long time

The indicator/alarm unit must be stored under the following environmental conditions.

• In a dark place under the normal temperature and humidity away from direct sunlight

• In a place where gases, solvents or vapors are not present

• In a place free from vibrations or shocks

8-2. Procedures to relocate the indicator/alarm unit or

use it again

When the indicator/alarm unit is relocated, select a new place in accordance with “4-2. Precautions for installation points” and “4-4. How to install”. For information on wiring, see “4-5. How to wire". The unpowered time for the detector head (sensor) or indicator/alarm unit must be minimized when the device unit is relocated.

CAUTION

When using a relocated or stopped/stored indicator/alarm unit again, never fail to perform a gas calibration. For information on readjustment including gas calibration, please contact RIKEN KEIKI.

8-3. Disposal of products

When the indicator/alarm unit is disposed of, it must be treated properly as an industrial waste in accordance with the local regulations.

- 73 - RM-5000

9 Troubleshooting 8-3. Disposal of products

Troubleshooting

The troubleshooting does not explain the causes of all the malfunctions which occur on the indicator/alarm unit. This simply helps to find the causes of malfunctions which frequently occur. If the indicator/alarm unit shows a symptom which is not explained in this manual, or still has malfunctions even though remedial actions are taken, please contact RIKEN KEIKI.

NOTE

Read also the operating manual of the detector head connected to the indicator/alarm unit.

RM-5000 - 74 -

9 Troubleshooting 8-3. Disposal of products

z: Lamp on {: Lamp off

Symptom/Display FAULT Causes Actions

The power cannot be turned on.

Fuse open-circuit Find out why the fuse has blown and take appropriate actions

Incorrect connection of

Abnormalities/momentary

Cable abnormalities

Abnormal operations

Detector head abnormalities

E-1 DETECTOR

(EC-5002, OX-5002, RM-5002, RM-5003 only)

Sensor abnormalities

E-1A SENSOR

(GP-5001, NC-5001, GH-5001, OX-5001 only)

Abnormalities in current

Abnormalities in voltage

Zero follower abnormalities Perform the zero adjustment.

Flow rate abnormalities

E-5d

(EC-5002, OX-5002, RM-5002, RM-5003 only)

Communication abnormalities

E-6 (Only on a model with RS-485 (option) mounted)

System abnormalities

E-9 System abnormalities

E-9

SYSTEM

System abnormalities

E-9A

SYSTEM

– The power switch is turned

off.

power cable

blackout of power supply system

(open circuit/not connected/short circuit)

{

Disturbances by sudden surge noise, etc.

{

Calibration gas concentration

Sensor sensitivity deterioration

Fault on the detector head (fault, 4 - 20 mA open-circuit, and low flow rate)

Cable open-circuit between

the indicator/alarm unit and the detector head

Amplifier PCB connection abnormalities

Sensor open-circuit and

short-circuit in the detector head

supply to the sensor

Flow loss on the detector head

Abnormalities in communications with the upper unit

Clock abnormalities Please contact RIKEN KEIKI.

Abnormalities of ROM, RAM, or EEPROM on the main PCB

Power voltage abnormalities

on the main PCB

Abnormalities of ROM or RAM on the amplifier PCB

Reference voltage

abnormalities on the amplifier PCB

Turn ON the power switch.

before replacing it. Check the terminal plate and correct the incorrect wiring.

Provide the rated voltage. Take measures such as checking or adding the UPS, power supply line filter and insulation transformer.

Check the wiring of indicator/alarm unit and related devices around it.

Turn off and restart the indicator/alarm unit. If such a symptom is observed frequently, take appropriate measures to eliminate the noise.

Use the proper calibration gas. Span adjustment impossible

Replace the sensor.

Recover from the fault on the detector head.

Restore the cable connection between the indicator/alarm unit and the detector head.

Check the harness between the amplifier PCB and the main PCB for connections.

Connect the cable between the indicator/alarm unit and the detector head (sensor) properly or replace the sensor.

Readjust the heater current.

Readjust the load voltage.

Recover from the flow rate abnormality on the detector head. For more information, see the operating manual of the detector head.

Please contact RIKEN KEIKI.

- 75 - RM-5000

9 Troubleshooting 8-3. Disposal of products

Symptoms Causes Actions

remains so.

Slow leak A very small amount of the gas to be detected may be

Environmental changes Perform the zero adjustment (fresh air adjustment).

A gas alarm is triggered despite of no gas leak and no other abnormalities at the detection point.

Disturbance by noise Turn off and restart the indicator/alarm unit.

Sudden change in the

Slow response Clogged dust filter Replace the dust filter.

Bended or clogged suction

Condensation is formed

Deteriorated sensor

Span adjustment impossible Improper calibration gas

Deteriorated sensor

Drifting of sensor output Perform the zero adjustment (fresh air adjustment). The reading rises (drops) and it

Presence of interference gas

environment

tube or exhaust tube

inside the suction tube.

sensitivity

concentration

sensitivity

Disturbances by interference gases, such as solvents, cannot be eliminated completely. For information on actions, such as removal filter, please contact RIKEN KEIKI.

leaking (Slow leak). Because ignoring it may cause dangers, take a remedial measure, i.e., taking actions the same as those for the gas alarm.

In particular, the galvanic cell type is affected by the air pressure.

Disturbances by interference gases, such as solvents, cannot be eliminated completely. For information on actions, such as removal filter, please contact RIKEN KEIKI.

If such a symptom is observed frequently, take appropriate measures to eliminate the noise.

When the environment (temperature, etc.) changes suddenly, the indicator/alarm unit cannot adjust to it and is affected by it. In some cases, the indicator/alarm unit triggers an indication alarm. Because the indicator/alarm unit cannot be used under sudden and frequent environmental changes, you must take any preventive actions to eliminate them.

Fix the defective parts.

Replace the sensor unit with a new one.

Use the proper calibration gas.

Replace the sensor unit with a new one.

RM-5000 - 76 -

10 Product Specifications 10-1. List of specifications

Product Specifications

10-1. List of specifications

Concentration display Character LCD (digital and bar meter display <three colors: green, orange, and

red>) Power display POWER lamp on (green) Gas alarm display First: ALM1 lamp blinks or lights up (red)/Second: ALM2 lamp blinks or lights up

(red) Gas alarm pattern Self-latching, auto-reset, or lock-in Gas alarm contact No-voltage contact 1a or 1b (2 step independent)

De-energized (energized at an alarm) or energized (de-energized at an alarm) Fault alarm/self

diagnosis Fault alarm display FAULT lamp blinking (orange)/Detail display Fault alarm pattern Auto-reset Fault alarm contact No-voltage contact 1a or 1b

Contact capacity 100 VAC - 0.5A/30 VDC - 1.5A (resistant load) Transmission system Analog/digital transmission [option] Transmission

specifications Power supply 24 VDC (21.6 – 26.4 VDC) Initial clear Approx. 25 seconds Operating

temperatures Operating humidities 10 to 90%RH (Non-condensing) Structure Card type with front display used enclosed in a case (a single-unit or multi-unit

External dimensions Approx. 29.6 (W) x 120 (H) x 92 (D) mm (projection portions excluded) Weight Approx. 0.10 kg (unit only)

System abnormalities/detection circuit abnormalities/communication

abnormalities (digital transmission only)

De-energized (energized at an alarm) or energized (de-energized at an alarm)

Analog transmission: 4 - 20 mA DC (no-insulation/load resistance under 300

Ω)/Digital transmission: RS-485

-10 – 40°C (at a constant condition)

case)

* Specifications subject to changes without notice.

- 77 - RM-5000

10 Product Specifications 10-1. List of specifications

Model GP-5001 NC-5001 NC-5001W Gas to be detected Combustible gas Applicable gas

detector head Gas alarm type Two-step alarm (H-HH) Detector head signal Sensor direct signal Cable for gas

detector head Distance to gas

detector head Functions Alarm delay/Suppression/Zero follower/Peak hold/Calibration history/Alarm trend

Power consumption Max. 7 W (including the gas detector head; Approx. 10 VA if a multi-unit case is

Model NP-5001 SP-5001 GH-5001 Gas to be detected High concentration gas Combustible/toxic gas Applicable gas

detector head Gas alarm type Two-step alarm (H-HH) Detector head signal Sensor direct signal Cable for gas

detector head

Distance to gas detector head

Functions Alarm delay/Suppression/Peak hold/Calibration history/Alarm trend history/Event

Power consumption Max. 7 W (including the gas detector head; Approx. 10 VA if a multi-unit case is

Catalytic combustion type detector head

CVV, etc. (1.25 sq or 2.0 sq) - 4-core

2 km or less for CVV - 2.0 sq

history/Event history

used)

Thermal conductivity type detector head

Shielded cable of CVVS, etc. (1.25 sq or 2.0 sq) 4-core

2 km or less for CVVS - 2.0 sq

history

used)

New ceramic type detector head

Hot-wire semiconductor type detector head

Cable of CVV, etc. (1.25 sq or 2.0 sq) - 4-core

2 km or less for CVV - 2.0 sq

Semiconductor type detector head

Cable of CVVS, etc. (1.25 sq or 2.0 sq) - 3-core

2 km or less for CVVS - 2.0 sq

RM-5000 - 78 -

10 Product Specifications 10-2. Product components

Model EC-5002 OX-5001 OX-5002 Gas to be detected Toxic gas Oxygen Applicable gas

detector head

Gas alarm type Two-step alarm (H-HH) Two-step alarm (H-HH or L-H, L-LL) Detector head signal Current signal (4 - 20 mA

Cable for gas detector head

Distance to gas detector head

Functions Alarm

Power consumption

Model RM-5002 RM-5003 Gas to be detected Depends on the connected gas detector head. Applicable gas

detector head

Gas alarm type Two-step alarm (H-HH or L-H, L-LL) Detector head signal Current signal (4 - 20 mA DC) Cable for gas

detector head

Distance to gas detector head

Functions Alarm delay/Peak hold/Alarm trend history/Event

Power consumption

Electrochemical type detector head/ Pyrolysis-particle type detector head

DC) Shielded cable of CVVS, etc. (1.25 sq or 2.0 sq) - 2-core

2 km or less for CVVS - 2.0 sq

delay/Suppression/Peak hold/Calibration history/Alarm trend history/Event history

Max. 3 W (including the gas detector head; Approx. 3 VA if a multi-unit case is used)

Gas detector head that outputs general measurement signals

Shielded cable of CVVS, etc. (1.25 sq or 2.0 sq) 2-core

Depends on the connected gas detector head.

history Max. 2 W (including the gas

detector head; Approx. 2 VA if a multi-unit case is used)

Galvanic cell type detector head

Sensor direct signal Current signal (4 - 20

600 m or less for CVVS -

2.0 sq Alarm delay/Peak hold/Calibration history/Alarm

trend history/Event history

Max. 2 W (including the gas detector head; Approx. 2 VA if a multi-unit case is used)

Various detector heads

Shielded cable of CVVS, etc. (1.25 sq or 2.0 sq) 3-core (power, signal, and common)

Max. 8 W (including the gas detector head; Approx. 11 VA if a multi-unit case is used)

mA DC)

2 km or less for CVVS - 2.0 sq

Max. 3 W (including the gas detector head; Approx. 3 VA if a multi-unit case is used)

10-2. Product components

• Main unit

• Operating manual (One copy per system regardless of the number of units to be delivered)

- 79 - RM-5000

11 Definition of Terms

Definition of Terms

%LEL A percentage unit of the concentration of a combustible gas assuming the lower

explosive limit (LEL) of the combustible gas as 100. LEL (Lower Explosion Limit) refers to the lowest concentration of a combustible gas in air capable of causing explosion when ignited.

vol% Gas concentration indicated in the unit of one-hundredth of the volume

ppm Gas concentration indicated in the unit of one-millionth of the volume

Calibration Find relationship of the readings, display values or setpoints with the actual

values by using the calibration gas.

Maintenance mode When maintenance is performed on the indicator/alarm unit, the alarm contact is

disconnected, and a signal to indicate the maintenance mode status is sent out to the external output signal. As a result, maintenance can be performed on a single unit of the indicator/alarm unit.

Initial clear The reading is unstable for seconds after the power is turned on. To prevent

malfunctions for that period, the alarm contact is deactivated. In addition, a signal to indicate the initial clear status is sent out to the external output.

Zero suppression A function to cut off the influences of environmental changes, interference

gases, etc.

Alarm delay time A function which temporarily suspends activation to prevent a false alarm

caused by noise from its outside.

Inhibit The gas detection function is temporarily suspended during maintenance, etc.

of the indicator/alarm unit. This is also called "point skip", which has the same function.

- 80 - RM-5000

Warranty Policy

RIKEN KEIKI CO., LTD., warrants gas alarm equipment sold by us to be free from defects in materials, workmanship, and performance for a period of one year from date of shipment from RIKEN KEIKI CO., LTD., Inc. Any parts found defective within that period will be repaired or replaced, at our option, free of charge. This warranty does not apply to those items which by their nature are subject to deterioration or consumption in normal service, and which must be cleaned, repaired, or replaced on a routine basis.

Warranty is voided by abuse including mechanical damage, alteration, rough handling, or repair procedures not in accordance with the operator’s manual. This warranty indicates the full extent of our liability, and we are not responsible for removal or replacement costs, local repair costs, transportation costs, or contingent expenses incurred without our prior approval.

THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER WARRANTIES AND REPRESENTATIONS, EXPRESSED OR IMPLIED, AND ALL OTHER OBLIGATIONS OR LIABILITIES ON THE PART OF RIKEN KEIKI CO., LTD., INCLUDING BUT NOT LIMITED TO, THE WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL RIKEN KEIKI CO., LTD., BE LIABLE FOR INDIRECT, INCIDENTAL, OR CONSEQUENTIAL LOSS OR DAMAGE OF ANY KIND CONNECTED WITH THE USE OF ITS PRODUCTS OR FAILURE OF ITS PRODUCTS TO FUNCTION OR OPERATE PROPERLY.

This warranty covers instruments and parts sold to users by authorized distributors, dealers, and representatives as appointed by RIKEN KEIKI CO., LTD.

We do not assume indemnification for any accident or damage caused by the operation of this gas monitor, and our warranty is limited to the replacement of parts or our complete goods.

- 81 - RM-5000

RKI Instruments RM-5000 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

<Contents>

Outline of the Product

1-1. Preface

1-2. Purpose of use

1 Outline of the Product 1-3. Definition of DANGER, WARNING, CAUTION, and NOTE

2 Important Notices on Safety 2-1. Danger cases

2-1. Danger cases

2-2. Warning cases

2-3. Precautions

Product Components

3-1. Main unit and accessories

3-2. Outline drawing

3-3. Names and functions for each part

3-3. Block diagram

How to Use

4-1. Before using the indicator/alarm unit

4-2. Precautions for installation points

4-3. Precautions for system designing

4-4. How to install

4-5. How to wire

How to Operate

5-1. Preparation for start-up

5-2. Basic operating procedures

5-3. How to start the indicator/alarm unit

5-4. Modes

5-5. Detection mode

5-6. Alarm test mode

5-7. User mode

5-8. How to exit

Operations and Functions

6-1. Gas alarm activation

6-2. Fault alarm activation

6-3. External output operation

6-4. Other functions

Maintenance

7-1. Maintenance intervals and items

7-2. Regular maintenance mode

7-3. Gas calibration method

7-4. How to clean

7-5. How to replace the fuse

8-3. Disposal of products

Troubleshooting

Product Specifications

10-1. List of specifications

10-2. Product components

Definition of Terms

Warranty Policy