New Cosmos Electric V3 Series Instruction Manual
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New Cosmos Electric V3 Series Instruction Manual

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V3 Series
Indicator Unit
Instruction Manual
・ Keep this manual for easy reference.
・ Carefully read this manual prior to use.
・ This manual describes the standard model. If your unit has end-user-specific
options, this manual will be superseded by your delivery specifications.
Instruction Manual No.
GAE-041-03
September 2022

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Summary of Contents for New Cosmos Electric V3 Series

  • Page 1 V3 Series Indicator Unit Instruction Manual ・ Keep this manual for easy reference. ・ Carefully read this manual prior to use. ・ This manual describes the standard model. If your unit has end-user-specific options, this manual will be superseded by your delivery specifications.

  • Page 2: Table Of Contents

    Table of Contents 1. Introduction .................... 1 2. Precautions .................... 2 3. Package Contents .................. 3 4. System Configurations ................4 5. Unit Dimensions and Components ............9 6. Installation .................... 11 7. Wiring and Connections ............... 13 7-1. Connection with Gas Detectors ............14 7-2.

  • Page 3: Introduction

    Perform periodic maintenance and inspection in accordance with the instructions given in this manual. There are various types of V3 series indicator units. They are divided according to the gas detector types they are used with, and these types are divided into the following five groups.

  • Page 4: Precautions

    Symbols Used in this Manual This manual uses Danger, Warning, Caution and Note symbols to draw attention to procedures, materials, methods, and processes, which require particular attention. Indicates an imminently hazardous situation that can result in DANGER death or serious injury. Indicates a potentially hazardous situation that may result in WARNING death or serious injury.

  • Page 5: Package Contents

    3. Package Contents The following items are included in a standard package. If any items are missing or damaged, please contact New Cosmos or its authorized representative for replacement. Standard Contents Item Qty. Indicator unit Replacement fuse, 1.0 A Instruction manual (this document) *1.

  • Page 6: System Configurations

    4. System Configurations (1) Typical System Configuration for Group 1 (Type: Hv/Cv/Tv) Power Noise Filter Source Flat Cable Assembly (FAS) Indicator Indicator Metal Alarm Unit Unit Unit Housing Type: Type: Hv/Cv/Tv Hv/Cv/Tv Individual Alarm Contacts Control Devices Analog Outputs Recorders Terminal Blocks on Cabinet Panel Cabinet Panel FG: Frame ground...
  • Page 7 (2) Typical System Configuration for Group 2 (Type: O/D) Power Noise Filter Source Flat Cable Assembly (FAS) Indicator Indicator Indicator Alarm Unit Metal Unit Unit Unit Housing Type: O/D Type: O/D Type: O/D Individual Alarm Contacts Control Devices Analog Outputs Recorders Zener Barrier Terminal Blocks on Cabinet Panel...
  • Page 8 (3) Typical System Configuration for Group 3 (Type: M) Noise Filter Power Source Flat Cable Assembly (FAS) Metal Alarm Unit Indicator Unit Indicator Unit Housing Type: M Type: M Individual Alarm Contacts Control Devices Analog Outputs Recorders Terminal Blocks on Cabinet Panel Cabinet Panel FG: Frame ground...
  • Page 9 (4) Typical System Configuration for Group 4 (Type: Hi/Ci/Ti) or Group 5 (Type: Zn) Noise Filter Power Source Flat Cable Assembly (FAS) Metal Alarm Unit Indicator Indicator Housing Unit Unit Type: Hi/Ci/ Type: Hi/Ci/ Ti/Zn Ti/Zn Individual Alarm Contacts Control Devices Analog Outputs Recorders Terminal Blocks on Cabinet Panel...
  • Page 10 (5) Typical System Configuration for V-NET (Groups 1-5) Power Noise Filter Source Flat Cable Assembly (FAS) RST-01 Metal Housing Single wire Terminal No.3 VS-3 VS-1 Indicator Indicator Alarm Network RS-232C Comm. Unit Unit Unit Extention Control Unit Unit Modem 3-core Shielded Cable 3-core Shielded Cable (100m or less)

  • Page 11: Unit Dimensions And Components

    5. Unit Dimensions and Components ⑦ ⑧ ④ ⑫ ① ⑪ ⑩ ⑨ ⑭ ⑬ ② ③ ⑥ ⑤ (Dimensions are in mm) Figure 6. Exterior Appearance of Indicator Unit (with Metal Housing) Item Component Description/Function Mode LEDs 1 to 5 (5 LEDs) When a mode is selected, the corresponding LED is lit Side cover Remove this cover to replace the external EEPROM...
  • Page 12 ② ③ ① ④ ⑤ ⑥ ⑦ ⑧ ⑪ ⑨ ⑩ ⑫ Figure 7. Operation Panel of Indicator Unit Item Component Description/Function Gas concentration bar graph Displays the gas concentration and alarm set values display Green POWER LED Lit when the indicator unit is on Amber TROUBLE LED Flashes when a device failure (of a connected gas detector or indicator unit itself) is detected...

  • Page 13: Installation

    6. Installation WARNING This product is not explosion-proof and should not be installed in a hazardous area.  CAUTION Install the product in plain view where it can be constantly monitored by an attendant,  and convenient enough for taking emergency procedures or giving instructions in the event of an alarm.
  • Page 14 (3) Insert a metal housing from the front of the panel, through the square cutout. When installing multiple metal housings, insert a partition board between each pair of metal housings. Metal housings Metal housing Partition Boards Panel Panel Installation of a single metal housing Installation of multiple metal housings Top View Top View...

  • Page 15: Wiring And Connections

    7. Wiring and Connections On the back side of the metal housing there are an 8-way double row terminal block and a connector (Connector B). Use this terminal block to connect the indicator unit to a gas detector, power source, and external devices.

  • Page 16: Connection With Gas Detectors

    7-1. Connection with Gas Detectors CAUTION Refer to the markings to ensure that the cables are correctly connected between a metal  housing (which houses an indicator unit) and a gas detector. Keep the connection cables (power/signal lines to gas detectors/indicator units/alarm ...
  • Page 17 (2) Typical Wiring Connection for Group 2 (Type: O/D) Indicator Units and Gas Detectors （＋） 24 VDC Power （－） P(+) P(+) P(+) １ １ １ N(-) N(-) ２ ２ N(-) ２ PA(+) PA(+) ３ ３ ３ PA(+) * Refer to ４...
  • Page 18 (3) Typical Wiring Connection for Group 3 (Type: M) Indicator Units and Gas Detectors PA(+) PA(+) ３ ３ PB(-) ４ ４ PB(-) Indicator Units ５ ５ ６ ６ Cabinet Panel ７ ７ ８ ８ Ｅ Ｅ Cabinet Panel‘s Terminal Blocks 3-core Shielded Cable 4-core Shielded Cable Gas Detectors...
  • Page 19 (4) Typical Wiring Connection for Group 4/5 (Type: Hi/Ci/Ti/Zn) Indicator Units and Gas Detectors PA(+) PA(+) ３ ３ PB(-) PB(-) ４ ４ Indicator Units ５ ５ ６ ６ Cabinet Panel ７ ７ ８ ８ Cabinet Panel‘s Terminal Blocks 6-core Shielded Cable 4-core Shielded Cable Gas Detectors （＋）...

  • Page 20: Connection With Alarm Unit

    7-2. Connection with Alarm Unit Connect indicator units to an alarm unit by using optional flat cable assemblies. The number of connectors needed on the flat cable assembly (FAS-1) is equal to the total number of indicator units plus an alarm unit. Attach them to their corresponding connectors (Connectors B) on the rear of the metal housings.

  • Page 21: Connecting Power Source

    7-3. Connecting Power Source 24 VDC power needs to be supplied between terminals P (+) and N (-) (Terminal Nos.1 and 2). If 24 VDC is not available, use a VPW-type power source unit (sold separately) for use with a 100 VAC commercially available power source.

  • Page 22: Connection For Analog Output

    7-5. Connection for Analog Output The 4-20mA analog signal corresponding to the detected gas concentration is output from the metal housing’s analog output terminals (Terminal Nos. 15 ad 16). The polarities (Nos. 15 and 16) are + and – respectively. A recorder or PLC can be connected to these analog output terminals, as necessary.
  • Page 23 Metal housing Connector B on far right Remove the two screws, then install the reset relay terminal Flat cable assembly (FAS-1) Reset relay terminal Ferrite core Tie wrap (RST-01) Looped - Ferrite core is needed for cable Ｎ CE marking - Should be installed within 10cm from RST-01 Clamp...

  • Page 24: Operation

    8. Operation 8-1. Start-up Important Start-up operation can be extremely dangerous because it uses actual gas (e.g., combustible gas, toxic gas). It is highly recommended that New Cosmos or an authorized representative should be contacted to perform the initial start-up. The accuracy of the checks and adjustments made during start-up (e.g., zero/span adjustments, operation checks using actual gas) is crucial to ensure the reliability of the gas detection and alarm system.

  • Page 25: Maintenance Mode

    8-2. Maintenance Mode Maintenance mode is used to deactivate the alarm contact outputs of the indicator unit and the alarm notification of the alarm unit. Set the indicator unit to the maintenance mode when performing adjustments, alarm operation check using the TEST button, or operation check using actual gas.

  • Page 26: Adjustment Procedures

    8-3. Adjustment Procedures 8-3-1. Flow Rate Adjustment When an extractive-type gas detector is connected, make sure that the center of the sphere of the gas detector’s flow meter aligns with the red line. If not, adjust the flow with the gas detector. For details on the adjustment, refer to the gas detector’s instruction manual.
  • Page 27 (2) Mode Selection - Deactivating the mode lock enables mode selection. Take the steps below to select a mode. - Pull and remove the indicator unit from the metal housing and locate the five LEDs (Nos.1 to 5) on the left side of the indicator unit. Each LED is numbered to represent its corresponding mode (1 to 5).
  • Page 28 The table below lists the modes and sub-modes that can be selected. Refer to the following pages for their use and adjustment procedures. Table 1. Modes/Sub-modes List To confirm (save) the currently selected setting, press and hold the setting wheel up. Mode Function Sub-mode...
  • Page 29 8-3-3. Check and Adjustment of Sensor Heater Current (for Groups 1, 4 and 5) 1. Pull the panel lock knob to remove the indicator unit from the metal housing. 2. Connect a voltmeter having a high internal resistance (min.100 kΩ) to the heater current test terminals located at the top of the indicator unit.
  • Page 30 8-3-5. Zero and Span Adjustments of Indicator Unit ・ If the gas detector has not been powered for a long period of time (i.e. between NOTE shipment and initial energization), it may take longer for the bar graph display reading to stabilize. ・...
  • Page 31 (1) Zero/span Adjustment Flowchart Follow the sequence shown in the flow chart below to perform adjustments. Zero/Span Adjustment Flowchart for Groups 1, 2 (Type D) and 3 Start zero/span adj. Do you want to execute one-touch zero adj.? Execute Mode 1-1 coarse zero adj. (page 32) Press and hold ADJ button.
  • Page 32 Zero/Span Adjustment Flowchart for Groups 4 and 5 Start zero/span adj. Execute Mode 1-3 coarse span adj. (page Execute Mode 1-1 coarse zero adj. (page 32) Execute Mode 1-2 fine zero adj. (page 33) Execute Mode 1-4 fine span adj. (page 34) Not good Is span adj.
  • Page 33 (2) One-touch Zero Adjustment (or 21.0 vol.% Adjustment) (2-A) One-touch Zero Adjustment for Groups 1, 2 (Type D) and 3 1. Check that the air around the gas detector is free of target/interfering gases. Press and hold the ADJ button on the front panel until the green POWER LED turns off. 2.
  • Page 34 (3) Coarse Zero Adjustment (3-A) Coarse Zero Adjustment for Groups 1, 2 (Type D) and 3 1. Deactivate the mode lock (page 24). 2. Select Mode 1-1 (coarse zero adjustment, pages 25 and 26). (Ensure that a zero adjustment is done before a span adjustment.) Scroll the setting wheel until the LED for Mode 1 turns on 3.
  • Page 35 (4) Fine Zero Adjustment for all groups except Group 2 (Type O) 1. Deactivate the mode lock (page 24). 2. Select Mode 1-2 (fine zero adjustment, pages 25 and 26). (Ensure that a zero adjustment is done before a span adjustment.) Scroll the setting wheel until the LED for Mode 1 turns on 3.
  • Page 36 (5) Span Adjustment (5-A) Span Adjustment for Groups 1 to 3 1. Deactivate the mode lock (page 24). 2. Select Mode 1-3 (span adjustment, pages 25 and 26). 3. Apply the calibration gas to the gas detector. Wait until the bar graph display stabilizes.
  • Page 37 (7) One-man Maintenance Span Adjustment for Groups 1 to 3 One-man maintenance span adjustment is a function that enables one operator to perform a span adjustment by using the peak hold function. The procedure is given below. 1. Enter the maintenance mode (page 23). Deactivate the mode lock (page 24). 2.
  • Page 38 8-3-6. Zero and Span Adjustments of Analog Output 1. Deactivate the mode lock (page 24). 2. Select Mode 2-1 for zero adjustment, or select Mode 2-2 for span adjustment (pages 25 and 26). 3. Connect a tester to the terminals (Nos.15 and 16) on the rear of the metal housing. 4.
  • Page 39 8-3-8. Gas Alarm Operation Check using TEST Button (Test Mode) 1. Press the MNT button to enter the maintenance mode (Refer to 8-2 “Maintenance Mode”). 2. Using a rounded pin, press the TEST button to enter the test mode. Once the test mode is entered, the bar graph display switches to the test level display. To change the test level (simulated gas concentration value), increase/decrease the value using the HIGH or LOW button.
  • Page 40 8-3-9. Gas Alarm Setting (Gas Alarm Set Values) Check that the bar graph displays the alarm set values specified in the delivery specifications. Alarm setting is normally done at the time of shipment. If the specified values are not displayed, take the following steps for adjustment: 1.
  • Page 41 CAUTION A trouble alarm check is performed while powered on. To prevent electrical shocks, do  not perform a trouble alarm check. This check has been done at the time of shipment. Entering Modes 1 to 5 resets an alarm. Do not enter any of these modes while an alarm ...
  • Page 42 (2) Linearizer Display 1. Deactivate the mode lock (page 24). 2. Select Mode 1-1 or 1-2 (pages 25 and 26). 3. To temporarily activate linearizer, press and hold the ADJ button while in Mode 1-1 or 1-2. The linearized bar graph reading is shown. Scroll the setting wheel until Select the LED for Mode 1 is on...

  • Page 43: Gas Alarm

    8-4. Gas Alarm (1) 1 Stage Alarm When the bar graph reading exceeds the 1 stage alarm set value (or falls below it in case of lower limit detection, e.g., oxygen detection), the bar graph display will turn amber. The red ALARM1 LED will start flashing and the 1 stage alarm contact output will be activated.
  • Page 44 DANGER When a gas alarm activates, stay calm and check that there is no fire in the vicinity. Do  not touch any power switches under any circumstances. Any sparks caused by turning the switch on or off may lead to ignition. WARNING If the indicator unit issues an alarm, take the necessary measures specified by your ...

  • Page 45: Cancel A Gas Alarm

    8-5. Cancel a Gas Alarm Use the RESET or BZ.STOP button on the alarm unit or cabinet panel to cancel a gas alarm. Note that the procedure to cancel an alarm varies depending on the system; therefore, refer to the delivery specifications for your system for detailed information on the alarm mode. (1) For a combination of a manual-resetting type indicator unit and a full-lock type alarm unit 1.
  • Page 46 (3) For an auto-resetting type indicator unit 1. Once the reading on the bar graph display falls below the alarm set value, the bar graph will automatically turn green, indicating that the 1 stage alarm is canceled. The red ALARM 1/ALARM 2 LED will turn off and the alarm contact output will be deactivated.

  • Page 47: Trouble Alarm

    8-6. Trouble Alarm A trouble alarm will be indicated by the amber flashing TROUBLE LED and the trouble alarm output will be activated when a problem is detected. Some examples are, gas concentration input from the gas detector is too low or the flow rate of the extractive-type gas detector with a flow sensor is too low.
  • Page 48 Trouble Alarm Causes and Actions First step is to always remove the fuse from the fuse holder and check it. If it is not blown then investigate for other causes and take appropriate steps. If the product does not reset to normal operation after taking the steps shown in the table below or if your problem is not listed in the table, please contact New Cosmos or its authorized representative.

  • Page 49: Maintenance

    9. Maintenance Routine Check Perform a routine check given in the table below. Frequency Description ・Green POWER LED Check that the POWER LED turns on and that the indicator unit works. Daily ・Indication of bar graph display Routine Check (to be performed Check that the indication/reading of the bar by user) graph display shows normal operation.

  • Page 50: Troubleshooting

    10. Troubleshooting Before requesting repair, please refer to the table below. If the unit does not return to normal operation after performing the corresponding steps in the table, or if your issue is not found in the table, contact New Cosmos or its authorized representative. Problem Possible cause Steps...

  • Page 51: Specifications

    11. Specifications Product Name V3 series indicator unit Metal housing V-SC-1, V-SC-1(S), V-SC-4B , V-SC-4B(S) , V-SC-6 , and V-SC-6(S) Detection principle As per specifications of gas detector Number of alarm stages 2 stages Indicator 3-colored LED (red, amber, green) bar graph display (50 segments)

  • Page 52: Warranty

    12. Warranty The warranty period is one (1) year from the date of purchase. The purchaser is entitled to the limited warranty, if the product malfunctions due to a manufacturing defect during normal use in accordance with the instruction manual, specifications and labels.

  • Page 53: Glossary

    14. Glossary Term Definition Gas detector Device used to detect the presence of a target gas and to give its concentration in the form of an electrical signal. Target gas Specific gas to be detected, concentration displayed, and used to trigger alarms.

  • Page 54: Sensor Stabilization Warm-Up Duration

    15. Sensor Stabilization Warm-up Duration Before zero/span adjustment or gas sensitivity check (gas concentration NOTE adjustment), the sensor output must be stable. To fully stabilize the sensor output of the connected detector, energize the detector for the recommended period of time. See Table 2 below. The recommended warm-up duration (energized time) of the detector varies depending on the sensor detection principle and non-energized period.
  • Page 55 This page intentionally left blank...
  • Page 56 Additional copies of this instruction manual may be purchased. Contact New Cosmos or its authorized representative for ordering The contents of this manual are subject to change without notice. Authorized representative: Manufacturer: NEW COSMOS ELECTRIC CO., LTD. 2-5-4 Mitsuya-naka, Yodogawa-ku, Osaka 532-0036, Japan https://www.newcosmos-global.com...

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