Table of Contents
Advertisement
Quick Links
OPERATING INSTRUCTION MANUAL
INDICATOR/ALARM UNIT NC-591W
• Request for the Customers
•
Read and understand this operating manual before using the detector.
•
You must operate the detector in accordance with the operating manual.
•
Regardless of warranty period, we shall not make any compensation for accidents and damage
caused by using this product.
The compensation shall be made only under the warranty policy of products or parts
replacement.
•
Because this is a safety unit, a regular maintenance for every six months and daily
maintenance must be performed.
•
If you find abnormalities in the detector, please notify them to our local representative
immediately.
FOR
PT1E-0963
Advertisement
Table of Contents
Related Manuals for Riken Keiki NC-591W
Summary of Contents for Riken Keiki NC-591W
- Page 1 PT1E-0963 OPERATING INSTRUCTION MANUAL FOR INDICATOR/ALARM UNIT NC-591W • Request for the Customers • Read and understand this operating manual before using the detector. • You must operate the detector in accordance with the operating manual. • Regardless of warranty period, we shall not make any compensation for accidents and damage caused by using this product. The compensation shall be made only under the warranty policy of products or parts replacement. •...
- Page 2 INDEX １． PRODUCT OUTLINE １−１． In the beginning ・・・・・・・・・・・・・・・・・・・・・・・ ３ １−２． Application for use・・・・・・・・・・・・・・・・・・・・・・・・ ３ １−３． Identification of each cautional marks ・・・・・・・・・・・・ ３ ２．IMPORTANT INSTRUCTION FOR THE SAFETY ２−１． Danger items ・・・・・・・・・・・・・・・・・・・・・・・・・・・ ４ ２−２． Warning items ・・・・・・・・・・・・・・・・・・・・・・・・・・・ ４ ２−３． Caution items ・・・・・・・・・・・・・・・・・・・・・・・・・・・ ５ ３．PRODUCT FUNCTION ３−１． External drawing ・・・・・・・・・・・・・・・・・・・・・・・・・・ ６ ３−２． Appearance ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ６ ３−３． ...
- Page 3 ６．KIND OF ALARM AND PERFORMANCE ６−１． Kind of alarm ・・・・・・・・・・・・・・・・・・・・・・・・・・・ ２８ ６−２． Gas alarm ６−２−１． Gas alarm action ・・・・・・・・・・・・・・・・・・・・・ ２８ ６−２−２． Responding to gas alarm ・・・・・・・・・・・・・・・・・・ ２９ ６−２−３． Alarm other than gas leakage ・・・・・・・・・・・・・・・ ２９ ７．MAINTENANCE CHECK ７−１． Frequency of maintenance and check items ７−１−１． Daily check・・・・・・・・・・・・・・・・・・・・・・・・ ３０ ７−１−２． Regular maintenance check・・・・・・・・・・・・・・・・・ ３０ ７−２． Maintenance contract for regular check ・・・・・・・・・・・・・・ ３０ ７−３． Replacement of sensor and parts ・・・・・・・・・・・・・・・・ ３１ ７−４． Treatment when operation is stopped or its installation place is moved. ７−４−１． Stopping the normal operation ・・・・・・・・・・・・・・・ ３１ ７−４−２． ...
-
Page 4: Product Outline
１．PRODUCT OUTLINE １−１．In the beginning First of all, we wish to express our heartfelt thanks for your purchase of our indicator/alarm unit NC-591W. This instruction manual is just a guide book to operate indicator/alarm unit NC-591W of RM-590 series. Your kind reading of this manual is requested not only for first user but for already experienced staff. １−２．Application for use ○ This is an exclusive indicator/alarm unit to be used in combination with our new ceramic sensor type combustible gas detector head.. ○ Combustible gas leaked into ambient air is detected with combustible gas detector head which is connected with this indicator/alarm unit.. Detection results(Gas concentrations) are displayed with 4-digit LED indicator and outputs 4-20mADC in ppm range and fixed 22mADC for LEL range as gas concentration signal. ... -
Page 5: ２−１．Danger Items
２．IMPORTANT INSTRUCTION FOR THE SAFETY ２−１．Danger items DANGER This is not a explosion proof unit. Do not use it at hazardous area. Operation under such environment is very dangerous. ２−２．Warning items WARNING ・ Detector head Do not connect other detector head than designated combustible gas detector head. If connected, you can not detect gas. Furthermore, this unit or other connected unit may be broken. ・ Power source Before supplying the power, confirm that the power source is a designated voltage. ... -
Page 6: ２−３．Caution Items
２−３．Caution items CAUTION ・ Do not use walky-talky near this unit. When this unit receives the electric waves by walky-talky etc near from the cable, this will effect the reading. When use the walky-talky, operate it at the place where there is no influence of electric wave ejection. ・ When make power on again, make it after an interval of over 5 seconds. When make power on within 5 seconds, there may be no normal operation. ・ When operate it not to follow this manual, repair it by other rating parts or modify it on his own, the safety and quality of products can not be secured. Then, when an accident take place by it, we cannot assure our responsibility on them. Take enough consideration for instrumentation to keep safety even if disconnection of power and signal lines, defect of operation or trouble would be happen due to unexpected reason. ... -
Page 8: ３−３．Panel Cut-Out Dimensions
３−３．Panel cut-out dimensions Dimensions with single case 1. Mounting for 2 steps in vertical and N lines in horizontal ＋０．６ （３６×N−３） ０ 2. Mounting for 1 step in vertical and N lines in horizontal ... -
Page 9: ３−４．Name Of Each Part And Function
３−４．Name of each part and function *The below pictures show indicator/alarm unit with single case. ① ③ ⑥ ④ ⑤ ⑦ ⑫ ⑩ ⑧ ⑬ ⑨ ⑪ ② ①LED display・・・・・・・・・・・・・・・・・・・・Indicates gas concentration. ... - Page 10 ３−５．Block diagram ＮＣ−５９１W Display part （ＰＷ／ＴＲ）(ＳＫＩＰ)（ＡＬ１） （ＡＬ２） Power supply part Operation part POWER INPUT （ＭＯＤＥ） （ＵＰ） （ＤＯＷＮ） （ＳＥＴ） (DC24V) Control part Alarm contact control part Gas alarm contact（ＡＬ１、ＡＬ２） Trouble alarm （ＴＲＯＵＢＬＥ） ※Standard setting Amplifier part ...
-
Page 11: How To Use
４．HOW TO USE ４−１．Before operation Be sure to keep cautional items of use not only for first user but for already experienced staff. If not keep these cautional items, the unit may be defective and correct gas detection may not be performed. ４−２．Mounting/detaching the unit Indicator/alarm unit for RM-590 series shall be used after housing it in either exclusive single case or multi-unit case. ４−２−１．Mounting the unit ・Open the front cover of this unit. ・Confirm that the power switch is at OFF. ・With the disengagement lever at down position, mount into the case. （Confirm that the edge connector is put in firmly） ・Confirm that the disengagement lever is turned upward when indicator/alarm unit is mounted into the case firmly. ・After confirmation of lever position, put ON the power switch, and then, close the cover. ４−２−２．Detaching the unit ・Open the front cover of this unit. ・Confirm that the power switch is at OFF. ... -
Page 12: ４−３．Installation Place
４−３．Installation place CAUTION Do not install at places where direct sun drought or where the temperature is drastically changed. Keep away the system from direct sun drought or where the temperature of the system is drastically changed. Do not install it where vibration or shocks may take place. The system consists of fine electronics parts. Install them where to be stable not to crush or fall down. Keep the system from the equipment which may generate the noise (Unit & cable). Keep the system from the equipment which may give a high frequency in the surroundings and install it. ... -
Page 13: ４−４．Caution In The System Engineering
４−４．Caution in the system engineering CAUTION Unstable power and noise may cause error of performance and alarm. For the system to use this unit, it is required to make design based on this manual descriptions. ４−４−１．Stable power used While the system gets stable at power on or power failure, the external output and alarm contact may be on and the care for it must be taken. In such case, use the standby battery or take an appropriate action in the receiver side. Supply the following power to this unit. Power voltage DC２４V±１０％ Approx 50msec. ... -
Page 14: ４−４−４．Alarm Contact
４−４−４．Alarm contact ・Alarm contacts shall be used only for external buzzer and alarm light, and do not use it for the controlling use (such as solenoid valve control etc). When control the external load, the bad influence may be given to the system according to the load characteristics. In such case, the following countermeasure shall be taken to stabilize the action and protect the contents. ・Relay(make contact amplification) by the low voltage relay and operate by connecting CR circuit (Spark Killer: SK) (Diode etc for DC) suited for relay coil directly to relay. ・Add CR circuit to the load side of relay on the request. CAUTION （FOR USE OF NORMALY-CLOSED CONTACT） ... - Page 15 Power supply Power supply Relayed relay (Low voltage relay) ＮＣ−５９１W −How to think alarm contacts against inductive load− The spec for alarm contact of NC-591W is described by the conditions of resistive load. When use the inductive load for alarm contacts, the very high reverse electromotive voltage may be generated and the following trouble tends to be produced.) ・Contact part of relay is melted adhesively and the contacts can no work. ・High voltage is put inside of indicator/alarm unit and then, electrical parts may be damaged. ・As it is big noise, the trouble action may be taken by the reckless drive of CPU. ・Unforeseeable noise may break into the contact regardless of inductive load and the above trouble tends to be produced. CAUTION ...
- Page 16 ４−５．Grounding Make grounding with terminal WARNING Be sure to make grounding before putting power ON.. *The above fig shows the unit with single case. In case of multi-unit case, refer to instruction manual for multi-unit case. ...
- Page 17 ４−６．Wiring （In case of single case） ① 24(+) ② DC24V±10％ ＴＤ１ ③ GND(-) ④ 3 ① ③ Detector 4 ② ④ head ＣＶＶ １．２５mm2-４ｃore ＴＤ２ 5 ③ ...
-
Page 18: Operation Method
５．OPERATION METHOD ５−１．Start up Before putting power ON …………… Before putting power ON, keep following caution items. If not, danger for electric shock or damage to the unit will be happen. （１）Make grounding. （２）Check that wirings with outer units are made correctly. （３）Check that the supply voltage is within a rating. （４）Relay contact for outer alarm may work during adjustments. Even relay contact works, treat that any influence will not be given to the outer. （５）To prevent fire, check that the designated fuse is used. ５−２．Basic performance flow Stand by Power on Initial clear (approx.25sec.) ＳＥＴ switch ... -
Page 19: ５−３．Start-Up Method
５−３．Start-up method ５−３−１．Power on Cover Power switch 1) Before making power on, check that the unit is connected correctly. 2) The power switch can be seen when the front cover is opened. 3) Put the power switch upward to ON and downward to OFF. 4) Put the power switch on, and power light illuminates. 5) Status of initial clear (about 25 sec.) is displayed as “- - - - “. ・ Checking of the system (Self-diagnosis) ・ Output signal: Approx 2.5mA ・ Gas alarm, trouble alarm (light, contact) shut-off. 18... - Page 20 ５−４．Explanation of performance (Detection mode) ５−４−１．Display action There are following two kinds of displays. (1)LED display ：Shows gas concentrations. (2)LED light ：Shows power/trouble (PW/TR), 1st gas alarm (AL1), 2nd gas alarm (AL2) and maintenance (SKIP) condition. * Contents of indications by LED display and LED light are different from the condition of the unit. Action of LED light □：Light off ■：Light on ◎：Flashing Preparation ...
-
Page 28: ５−６．How To Finish Operation
５−６．How to finish operation When finish this operation, turn off power switch of this unit and turn off the main power (DC24V). WARNING ・When finish this operation, do it after making point ship with the upper system (Centralized system). ・When finish this operation, check the external output and function of outer equipment to be connected with external alarm contact. Then, judge whether power can be shut off or not. When alarm contact is set on energized relay (option), alarm contact works when make ... -
Page 29: ６−１．Kind Of Alarm
６．KINDS OF ALARM AND PERFORMANCE ６−１．Kind of alarm There are two kinds of alarms such as gas alarm and trouble alarm. ・Gas alarm：When detection gas reaches preset alarm level or exceeds it, this starts alarm. 《Latched mode→Self reset after reset operation.》 ＊ NOTE 1st alarm level shall be set in ppm range and 2nd alarm level shall be set in LEL range respectively. This unit provides alarm delay circuit for 2 seconds (standard) to prevent false action. ・Trouble alarm：Abnormal condition in this unit is detected and gives a trouble alarm. Except system trouble “E-00”, it is non-latched mode. When return to normal from trouble condition, it starts again from the action of initial clear after power on see section 【9. TREATMENT AT ABNORMAL CASE】. ６−２．Gas alarm ６−２−１．Gas alarm action (1)Display ①Gas concentration When exceeds detection range (Over scale), LED shows “∩∩∩∩”. ②Power light (Power：Green) It keeps steady light. ③Alarm light （AL1：Orange）, （AL2：Red） There are two alarm levels. ... - Page 30 ６−２−２．Responding to gas alarm When detecting leak gas The counteraction at gas alarm shall follow to the client rule and immediate reaction shall be required. Generally, the following action is taken. ①Confirmation of indication value. ＊ NOTE Instantaneous gas leak may get lower at confirmation time. Except gas alarm, it gets alarm condition temporarily by noise or any other accidental conditions. ②Based on gas alarm control concentration, secure the safety by keeping away people from the monitoring area. ③When gas concentration display is continued, close the gas valve and confirm that gas concentration gets lower enough. ④Suppose that the leak gas is to remain and provide yourself with protection attire and tool away from danger, go to the leak site and check the gas residual condition by portable gas detector. ⑤After checking that there is no danger, the treatment for gas leak shall be taken. ６−２−３．Alarm other than gas leakage t may respond to interference gas For interference gases, contact the nearest agent or RIKEN KEIKI. t may be caused by drifting due to the change of long time elapsed sensor Check the reading by daily check and make calibration through authorized service agent whenever necessary. t may be caused by the noise generated from spherical machine Revision of installation location, wirings and the addition etc. of noise measure parts between instrument and detector shall be required. ...
-
Page 31: ７−１−１．Daily Check
７．MAINTENANCE CHECK This is an important for security and safety. To maintain the security and enhance the reliability of safety, the regular maintenance check for it shall be absolutely necessary. ７−１．Frequency of maintenance and check items. ７−１−１．Daily check This is the check items carried out by customer. ①Check of PW/TR light. In normal operation, the light is at on condition. ②Check of LED reading Check that LED reading is zero (0). If it is not “0”, check that gas is free around detector head and make zero adjustment at detector head side. CAUTION For the accurate zero adjustment, check it by “1-1 Zero adjustment” of maintenance mode. ③Alarm test ... -
Page 32: ７−４−２．Installation When Move Its Place
７−３．Replacement of sensor and parts. CAUTION For replacement of sensors and parts etc, contact our service agent or RIKEN KEIKI. ７−４．Treatment when operation is stopped or its installation place is moved. ７−４−１．Stopping the normal operation Make the power switch off on the front panel. Make the power (DC24V) off at the supply side. ７−４−２．Installation when move its place When move its place, refer to【4-3. Installation place】 about its moving place. Then, for wiring refer to 【4-6. Caution at wiring】. CAUTION When move its installation place, be sure to make gas calibration. The re-adjustment work including gas calibration shall be requested to contact our service agent or RIKEN KEIKI. ７−５．Storage or treatment when the unit is not in use for a long time. ... - Page 33 ９．TREATMENT AT ABNORMAL CASE ９−１．Trouble alarm Flashing of PW/TR light ・ When PW/TR light is flashing, it is the condition that the following trouble may be caused. ・ Research its cause and take an appropriate action. ・ The output from the unit at trouble shall be as follows. 4〜20mA output : Fixed at 0.5mA Trouble alarm contact : Relay contact works. LED display Trouble content Main cause Ｅ−００ System trouble Memory trouble in the unit. Connection trouble of Detector head disconnection, sensor disconnection, sensor Ｅ−０１ detection head cable disconnection. Ｅ−０４ Auto-zero trouble Zero drift of the sensor is high ...
- Page 34 （３）PW/TR light flashing ①System trouble “Ｅ−００” ＜Cause and action＞ ・Memory trouble inside of indicator/alarm unit. Contact our nearest agent or RIKEN KEIKI. ②Sensor connection trouble “Ｅ−０１” ＜Cause and action＞ ・Non-connection of sensor, contact failure of connector and disconnection of sensor cable. ・Check “whether sensor is connected” or “the sensor cable connector is connected to the sensor.” If can not be recovered, contact our nearest agent or RIKEN KEIKI. （４）Fuse disconnection ＜Performance＞ ・This unit can not work. ＜Cause and action＞ ・The trouble of this unit or trouble of external power source can be considered. Search this cause and after taking its measures, replace the fuse with the designate one. ＊NOTE The fuse rating for this unit is “250V/1AT”. 33...
-
Page 35: Definition Of Terms
１０．DEFINITION OF TERMS ＬＥＬ The abbreviation LEL stands for Lower Explosive Limit. Lower explosive limit This represents the lowest concentration which can be ignited by source of ignition, hence the lowest concentration which can produce an explosion. Calibration Matching the equipment indication, reading or set value to the calibration gas concentration valve by using the calibration/standard gas. Maintenance mode When make maintenance of this unit, shut off the alarm and the output of signal showing the maintenance mode condition is displayed on the external output signal. By this, the maintenance is carried out independently on this unit. Press MODE switch for over 3 seconds to start the maintenance. nitial clear The output from the detector head fluctuates for a while after power on. This function is to suppress alarm during this period. Also, signal output showing initial clear condition is given on external output. Alarm delay time To prevent the alarm error by noise intruded from the outside, this is the function to suspend the running temporarily. Response time The time to get an alarm when exposed to gas concentration of 1.6 times alarm level. 34... -
Page 36: Product Specifications
１１．PRODUCT SPECIFICATIONS １１−１．Specifications Model designation : NC-591W Detection gas : Combustible gases Gas concentration display : Digital LED (4-degit, 7 segments) Applicable detector head : New ceramic sensor type detector head Detection signal : Direct signal from the sensor Detector head cable : CVV 4-core or equivalent Distance to the detector head : Max 1.25km with CVV(1.25mm2) cable. Output signal : 4 〜 20mADC, non-isolated (Maximum loop load 300Ω) ... - Page 37 １１−２．Product compositions Standard compositions ・Indicator/alarm unit Model NC-591W ・Operating instruction manual…1 vol. ・Spare fuse…Depends on ordered quantity of the unit. 1〜10 units 1 pce 11〜20 units 2 pcs 21〜50 units 3 pcs 51 units and above 4 pcs 36...
Need help?
Do you have a question about the NC-591W and is the answer not in the manual?
Questions and answers