Table of Contents
Advertisement
Quick Links
INTRODUCTION TO THE HGM300/RDM800 YOKOGAWA REFRIGERANT
MONITOR SYSTEM
Welcome ñ This is an introduction the Yokogawa HGM300/RDM800 refrigerant monitor system. As you open the
shipping carton locate the following items;
HGM300 ñ Manufactured to your order specifications, that is, number of zones, type of air sample fittings and dual
4-20ma DC option (if ordered)
RDM800 ñ Remote Display Module (if ordered).
Charcoal filter with ì Tî bolt bracket; line end filter assembly (quantity dependant on number of zones ordered ñ for
4 zones ñ 5 filters, for 8 zones, 9 filters, 12 zones 13 filters and 16 zones 17 filters. Do not use a filter on the
exhaust line).
Operations manual
Optional items ñ Audio/Visual alarms, visual alarm, audio alarm, air sample tubing, etc. as ordered.
Proper mounting of HGM300 and RDM800 -
HGM300 Mounting Specs
7.0"
Rev. 10/22/01
RDM800 Mounting Specs
14.0"
7.0"
HGM300/RDM800 mini manual.doc
9.0"
1
Advertisement
Table of Contents
Related Manuals for YOKOGAWA HGM300
Summary of Contents for YOKOGAWA HGM300
- Page 1 INTRODUCTION TO THE HGM300/RDM800 YOKOGAWA REFRIGERANT MONITOR SYSTEM Welcome ñ This is an introduction the Yokogawa HGM300/RDM800 refrigerant monitor system. As you open the shipping carton locate the following items; HGM300 ñ Manufactured to your order specifications, that is, number of zones, type of air sample fittings and dual 4-20ma DC option (if ordered) RDM800 ñ Remote Display Module (if ordered). Charcoal filter with ì Tî bolt bracket; line end filter assembly (quantity dependant on number of zones ordered ñ for 4 zones ñ 5 filters, for 8 zones, 9 filters, 12 zones 13 filters and 16 zones 17 filters. Do not use a filter on the ...
- Page 2 The HGM300 should be centrally located in the mechanical room and be readily accessible for easy visual monitoring and servicing. Air sample tubing may be run in lengths up to 500í. The fresh air purge line should draw from an area that does not contain any refrigerant gas and cannot exceed 300í in length. The exhaust line should run to an out side location if possible. The length of the exhaust line cannot exceed 100í. Ideally, two to three pick up points spaced around each chiller will provide sufficient coverage. It may be necessary ...
- Page 3 WIRING THE HGM300 AC Power (In / Out) -- RS485 -- 4-20 mAdc Node Address Switch Dual 4-20 mAdc Outputs On/Off Power Switch RS485 Main 120Volt Power Auxiliary Power 120Volt (Used to supply power for audio/visual alarms) ...
- Page 4 WIRING THE RDM800 Building RDM800 HGM300 RS485 Automation relays Connector Main Power System RS485 Connector Terminator for Terminator for HGM300 RS485 Building Automation Connector RS485 Connector Rev. 10/22/01 HGM300/RDM800 mini manual.doc...
- Page 5 HGM300 Relay Wiring LEAK SPILL EVACUATE FAULT 1 2 3 4 Relay Relay Relay Relay Horn Strobe Aux. Power Main Power Jumper the ë Neutralí of the auxiliary power connector to the ë Commoní on the relay block. Connect one end of strobe or horn to the ë NOí of whichever level of alarm is appropriate for application. The other end of strobe or horn is connected to a 120VAC power source, or to the ë Lineí of the auxiliary power connector (Max 5AAC). ...
- Page 6 Power up the monitor system. (Warm up time is 15 minutes) Start up checkpoints a) All buttons on RDM800 ì chirpî when pressed. (Contact the factory if the do not ì chirpî . See last page for whom to call) b) Communication connection between HGM300 and RDM800 c) Checking node address for HGM300ís (multiple HGM300î s also) d) Terminator positions Multiple HGMís TERMINATOR ì INî MULTIPLE HGM300íS WITH RDM800 NOTE ñ THE LAST HGM300 OR RDM800 ON EITHER END OF THE NETWORK MUST HAVE THE TERMINATOR IN THE ì INî POSITION AND ALL OTHER RMD800 UNITSMUST HAVE THEIR TERMINATORS IN THE ì OUTî POSITION. NOTE ñ TOTAL LENGTH OF RS-485 CABLE CANNOT EXCEED 1500m. (Use instrument cable 20 gage multistrand shielded and twisted pair ñ similar or equal to Beldon cable #8762.) RS-485 ...
- Page 7 MULTIPLE HGM300ís CONNECTED TO A BUILDING AUTOMATION SYSTEM DAISEY CHAIN FASHION BUILDING AUTOMATION SYSTEM RS-485 TERMINATOR TERMINATOR ì INî HGM300 HGM300 HGM300 HGM300 UNIT 1 UNIT 2 UNIT 3 UNIT 4 NODE 1 NODE 2 NODE 3 NODE 4 TERMINATOR TERMINATOR ...
- Page 8 6) Use the left/right and up/down keys to change the temperature and the ì ENTERî key to complete the action. 7) ì CURRENT PPMî This function cannot be accessed. 8) Press the ì LOG INTERVALî button only if the interval is to be reduced from the 1440-minute (once every 24 hours) factory setting to a lower setting. (At the 1440 minute setting the HGM300 will record the observed PPM level once every 24 hours. This can be reset to lower numbers to trend a problem in a given zone.) 9) Press ì MOREî This takes you to the second zone set up screen. SETUP SCREEN # 2 Press ì LEAK LEVELî button. Use left/right keys to move across and up/down keys to readjust leak alarm PPM level to desired PPM level. 10) Press ì SPILL LEVELî button. Repeat as in step 8. 11) Press ì EVACUATE LEVELî Button. Repeat as in step 8. ...
- Page 9 Connect RS232 interface cable to PC and RS232 port on the HGM300 after both the HGM300 and PC has fully powered up. Open the HGM300 software using Windows Explorer. Upon start up, the program will immediately attempt to download data from the HGM300. Several beeps can be heard as the program communicates with the HGM300. Note: To move through the screen use the ARROW keys to move up, down, left and right. Use the ENTER key to select options and the ESCAPE key to back out of a selection. Using the arrow keys go to EDIT ñ press Enter key ñ the EDIT Menu DROPS DOWN ñ select SYSTEM ñ press ENTER key. The HGM ì LOCATIONî becomes highlighted. Press ENTER key to move to the HGM TAG area, use the BACKSPACE key to remove the existing tag, then enter in a new tag. Press ENTER and you are returned to ì LOCATION.î Use the ARROW key to select the next item to be addressed. You CANNOT change the ì SNî or ì FIRMWAREî items. Press the ESCAPE key to return to the menu bar. Go to EDIT ñ press ENTER, select ì ZONESî and press ENTER key. You may now select a specific zone to identify and set parameters. When "REFRIGERANTî is selected use the ARROW keys to move up and down through the gas library to locate the gas type for that zone ñ HIGHLIGHT the gas type and press ENTER. To set the ALARMS ñ select EVAC LEVEL first, press ENTER use the BACKSPACE key to clear previous setting and type in the new PPM level. Use the same method to set the SPILL LEVEL and LEAK LEVEL. To close or bypass a zone, set the DISTANCE to 0 feet. Saving the program to a disk or C drive ...
-
Page 10: Responding To Alarms
Alarm Summary Screen The ALARM SUMMARY SCREEN displays a list of all alarm conditions across the network. Each box represents a single alarm. If there are more then eight alarms additional screens can be displayed by pressing the MORE button. Each active alarm is indicated by a blinking box, as an alarm is acknowledged the box stops blinking. To acknowledge an alarm, press the button adjacent to the first alarm box. This will take you to the ALARM DETAIL SCREEN. The ALARM DETAIL SCREEN displays the following information; • Complete location information • Refrigerant type and current PPM level • Peak PPM and peak time • Type of alarm, alarm time and date Rev. 10/22/01 HGM300/RDM800 mini manual.doc... - Page 11 Alarm Detail Screen The ALARM DETAIL SCREEN allows access to three buttons on the bottom of the screen: QUIT ñ Returns you to the ALARM SUMMARY SCREEN ACK ñ Acknowledges the alarm SETUP ñ Returns you to the ZONE SETUP SCREEN (From the ZONE SETUP SCREEN you can access the TREND SCREEN for that zone.) To acknowledge the alarm press the button below ACK. You will be returned to the ALARM SUMMARY SCREEN and the box associated with that alarm will no longer be blinking, indicating that the alarm has been acknowledged. Repeat this procedure for each active alarm. When all alarms are acknowledged the red alarm light will go out on the HGM300 and the alarm relays will de-activate. All pending alarms across the entire network must be acknowledged before the RDM800 returns to normal operation. Once this occurs, the RDM800 red alarm light will go out and its relays will de-activate. NOTE ñ If there is still sufficient refrigerant gas present the system will go back into alarm! LOG INTERVAL AND TREND SCREEN The HGM300 retains a data log of 100 measurements per zone, starting on the left and moving to the right. The log interval is the number of minutes from 0 to 1440 (1440 minutes is once every 24 hours) between each log point. This parameter can be changed from the ZONE SETUP SCREEN for each zone. (When 0 minutes are set the trend is recorded every time the zone is sampled.) Zone Setup Screen #1 The LOG INTERVAL setting is a useful tool to determine what is occurring in a mechanical room over time. Rev. 10/22/01 ...
-
Page 12: Critical Faults
Trend Screen From the ZONE SCREEN press the button adjacent to the zone that you wish to work with to go to the ZONE SETUP SCREEN, press the button below TREND to get to the TREND screen for that zone. The trend graph opens to the most current data point. Use the left/right keypad keys to move the cursor across the screen. As you move across the screen the date and time of the reading and the PPM level will be displayed. Use the ZOOM IN and ZOOM OUT buttons to adjust the vertical scale. Trend data is first in, first out basis. After 100 trend values have been stored the 101 value will replace the first stored value. 1) - Working with the fault screens WORKING WITH THE FAULT SCREENS A. From the ì SYSTEMî screen press the button adjacent to ì FAULTî . This takes you to the FAULT SCREEN. The information displayed on this screen is broken onto two categories ñ CRITICAL FAULTS and NON CRITICAL FAULTS. Rev. 10/22/01 HGM300/RDM800 mini manual.doc... -
Page 13: Fault Screen
FAULT SCREEN CRITICAL FAULTS 1) NO FLOW ON ZONE ñ Go to SYSTEM SCREEN, the to ZONES. The zone screen will display a ì NO FLOWî message in each individual zone affected. Check for a blockage in the air sample line or at the line end filter. Once the blockage has been cleared, the HGM300 will return to normal operation after the zone has been sampled. Note - This can take some several minutes since it is dependent upon how many zones there are and their lengths. The HGM300 will clear the fault the next time it polls the effected zone and the RDM800 will return to normal operation the next time that it polls the HGM300. 2) NO FLOW ON PURGE ñ Check the purge line for a blockage. Verify that the length of the purge line and exhaust line do not exceed 100 feet in length. 3) NO FLOW DETECTED ñ Check for proper pump operation. Check the water trap ñ drain if necessary. 4) CLIPPING FAULT ñ The detector voltage may be out of tolerance. Check the DIAGNOSTIC SCREEN for the DET voltage, AVE voltage and ZERO voltage. Call the factory with this information at 1-800-888-6400 Ext. 5182, 5169 or 5403 for farther instructions. 5) REZERO VOLT TOL ñ The detector output voltage is out of tolerance. Check the DIAGNOSTIC SCREEN as in item 4 and contact the factory for assistance. 6) TRIGGER FAULT ñ No trigger from IR source pulser. Contact factory with all information from the DIAGNOSTIC SCREEN for farther instructions. DIAGNOSTIC SCREEN To get to the DIAGNOSTIC SCREEN ñ From the SYSTEM SCREEN press the button adjacent to the HGM300 that you wish to view, this takes you to the HGM SETUP SCREEN, from there press the button adjacent DIAG. NON CRITICAL FAULTS ... -
Page 14: Fault Log Screen
Check the installation to verify that the monitor is not being subjected to extreme temperatures. Check the DIAGNOSTIC SCREEN for the ZERO temperature, BNCH temperature and BOX temperature. Call the factory with this information at 1-800-888-6400 Ext. 5182, 5169 or 5403 for farther instructions. 3) PRESSURE SENSOR ñ Manifold pressure is outside normal operating range (or sensor has failed). Check the DIAGNOSTIC SCREEN record ALL data and call the factory with this information at 1-800-888-6400 Ext. 5182, 5169 or 5403 for farther instructions. 4) LOOP FAULT ñ This would only be displayed if the dual 4-20mAdc option was installed and one or both current loops are open. Check the wiring to load/monitoring circuit on both 4-20mA loops. 5) CONFIG FAULT ñ There is an error in the ZONE SETUP SCREEN, Number of zones field. Check to verify that the actual number of zones installed in the monitor is equal to the number indicated in the Zone Setup Screen. Check to insure that the manifold solenoid cable connector is securely fastened to its terminal connector. Check for illegal parameter. Reset to factory default settings. Reset to factory default settings - Hold down the left most button inside the HGM300 ñ cycle the power off then on while holding that button down ñ listen for five beeps then release the button. Reprogram the HGM300. Note ñ Performing this function wipes out all program parameters, alarms, faults, trends and log files. Resetting the RDM800 to factory default settings ñ Occasionally it will be necessary to rest the RDM800 to factory default settings. From the System Screen, press and hold the button adjacent to the ì ALARMî function, cycle power off then on, listen for five beeps. FAULT LOG SCREEN ñ From the FAULT SCREEN press the button under LOG. This screen lists the last 20 fault conditions recorded by the system. Using the left/right keys on the keypad you can move across the screen to view the time and date of the fault. FAULT LOG SCREEN ... - Page 15 Working with the diagnostic screen Overview The Diagnostic Screen displays reference values for use by repair technicians. From the top level Zone Screen press the SYSTEM key to go to the System Screen. Press the Diagnostic key to view the reference values. Diagnostic Screen Overview The diagnostic screen contains sensor data and status information useful for trouble shooting various fault conditions. An explanation of each line is given below along with normal operating ranges. LINE 1: Detector Voltage ñ This is the peak to peak output of the IR sensor, in the absence of refrigerant this value can range from 3.900V to 4.500V. LINE 2: Average Detector Voltage ñ This is simply a running average of the values displayed in line 1. LINE 3: Zero Voltage ñ This is the IR sensor output that was stored during the last purge cycle and has the same range as line 1. LINE 4: Noise ñ This is a 16 point running average of the noise portion of IR bench output. This reading is valuable mainly when refrigerant is NOT present. LINE 5: Average Absorbency ñ This is the optical absorbency computed from the values in lines 2 and 3. In the absence of refrigerant the absorbency is approximately 0.000AU. When sampling refrigerants, itsí value varies proportionally with the refrigerant concentration. LINE 6: uMoles/L ñ This is the absolute concentration in micromoles per liter of refrigerant base on line 4 and the internal calibration. There are 2 figures given. The first (which is annotated by a B) is the actual measurement at the IR bench. The second is the calculated value corrected to ambient conditions (temperature + pressure). LINE 7: PPM ñ Parts Per Million is the volume concentration referenced to standard temperature and pressure and is computed from lines 5, 8 and 12. There are 2 figures given. The first (annotated by a B) is the actual PPM at the IR branch. The second is a PPM reading normalized to standard temperature and pressure. LINE 8: Zero Temperature ñ This line contains the sensor and enclosure temperature measured and stored during the last purge cycle in degrees C. LINE 9: Bench Temperature ñ This is the current IR sensor temperature in degrees C as well as the raw voltage coming from the temperature sensor itself. This value can range from ambient to ambient +15 degrees C. Rev. 10/22/01 HGM300/RDM800 mini manual.doc...
- Page 16 Rev. 10/22/01 HGM300/RDM800 mini manual.doc...
- Page 17 SHIPPING ADDRESS: YOKOGAWA CORP. OF AMERICA 2 DART ROAD NEWNAN, GA 30265 WARRANTY HIGHLIGHTS ! PLEASE REVIEW COMPLETE WARRANTY CONDITIONS. ! PARTS: 2 YEARS AFTER SHIPMENT FROM FACTORY UNLESS OTHERWISE NEGOTIATED. ! LABOR: 90 DAYS AFTER SHIPMENT. ! DRILLING INTO THE TOP OF THE HGM300 OR RDM800 CASE VOIDS WARRANTY. ! ANY WATER FOUND IN THE INFRARED DETECTING BENCH VOIDS WARRANTY. ! ANY OBVIOUS DAMAGE VOIDS WARRANTY. ! CALL ANYONE LISTED ABOVE FOR WARRANTY QUESTIONS OR CLAIMS. J:/EDP/HGM300/WHOM TO CALL AT THE FACTORY.DOC Rev. 10/22/01 HGM300/RDM800 mini manual.doc...
Need help?
Do you have a question about the HGM300 and is the answer not in the manual?
Questions and answers