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MGS-250 Manual

6490-9000 Revision 4

35

Parameter

Description

Alarm ON Delays

Sets the ON delay time (0-15 minutes) for the alarm
output signals (relay, Modbus). The default delay is
0 minutes.

Alarm OFF Delays

Sets the OFF delay time for the alarm output signals
(relay, Modbus) in minutes (0-15). The default delay
is 0 minutes.

Relay Contact Behavior (Failsafe Mode)

Sets the default relay power state so that power loss
can be detected.

The behavior of the relay changes from energizing
when an alarm condition occurs (default) to
energizing at power up (Failsafe). In both cases the
relay changes state when an alarm occurs, failsafe
is simply inverted. This allows power failures to be
detected as alarms.

00

NO (default mode)

01 Failsafe

mode

Relay Latching

Controls the relay latching behavior.

00 OFF (default). Relay does not latch, and

resets once the alarm condition is removed.

01

ON. Relay remains latched; reset by BMS
command over RS-485, or by pressing and
holding the Enter button for 5 seconds.

Audible Alarm

The units have an internal audible alarm. You can
disable this, but the default setting is “enabled”

in

compliance with EN378.

00 OFF

01 ON

(default)

www.calcert.com

[email protected]

1.888.610.7664

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Содержание HFO1234ZE

Страница 1: ...etector Installation and Operation Manual Instruction 6490 9000 September 2016 Revision 4 Product Leadership x x Training x Service x Reliability www calcert com sales calcert com 1 888 610 7664 0 5 1...

Страница 2: ...T NOTICE THE INFORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED ACCURATE HOWEVER NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THIS DATA ALL GOODS MUST BE SHIPPED TO THE MANUFACT...

Страница 3: ...AND OR DISTRIBUTES HOLDS A PROPRIETARY INTEREST AND IS ALSO SUBJECT TO COPYRIGHT PROTECTION AND ALL RIGHTS ARE RESERVED NO PARTY MAY USE OR COPY SUCH SOFTWARE IN ANY MANNER OR FORMAT EXCEPT TO THE EX...

Страница 4: ...MGS 250 Manual 4 6490 9000 Revision 4 www calcert com sales calcert com 1 888 610 7664 0 5 10 15 20 25 30...

Страница 5: ...gerated Spaces 18 2 2 4 Chillers 19 2 3 Mounting Procedure 19 SECTION 3 WIRING AND CONFIGURATION 22 3 1 Overview 22 3 2 Wiring Supply Power 24VAC or 24VDC 23 3 3 Wiring Alarm Output Analog Signal 25 3...

Страница 6: ...ion Gas 46 SECTION 7 MODBUS COMMUNICATIONS 49 7 1 Introduction 49 7 2 Communications Settings 49 7 3 Analog Input Registers 50 7 4 Analog Output Registers 51 7 5 Input Status Flags 52 7 6 Output Statu...

Страница 7: ...D CONFIGURATION 22 Figure 7 Terminal Blocks and Cable Glands 22 Figure 8 Supply Power Wiring Options 23 Figure 9 Maintaining Neutral Polarity 24 Figure 10 Analog Output Wiring 25 Figure 11 Sample Rela...

Страница 8: ...able 9 MGS 250 Behavior during Alarm Conditions 31 Table 10 MGS 250 Behavior during a Non Critical Fault 32 Table 11 MGS 250 Behavior during a Critical Fault 32 SECTION 5 CONFIGURE THE GAS DETECTOR 33...

Страница 9: ...basis or integrated into controls or a Building Management System BMS The MGS 250 can be used in locations that require continuous monitoring and to add gas detection solutions to an existing system F...

Страница 10: ...nt performance is based on an average response profile for all of the gases within the group NOTE Greater accuracy may be achieved through the use of calibration gas and the adjustment procedure detai...

Страница 11: ...Groups 1 3 1 2 3 Detecting Specific Gases Each gas specific gas detector PNs 6401 0501 to 6401 0520 is shipped factory calibrated to its specific target refrigerant Refer to Figure 3 and Table 2 www c...

Страница 12: ...MGS 250 Manual 12 6490 9000 Revision 4 Figure 3 Gas Specific MGS 250 Gas Detectors www calcert com sales calcert com 1 888 610 7664 0 5 10 15 20 25 30...

Страница 13: ...F 5 6401 0514 HFO1234Ze 5 6401 0515 HFO1233ZD 5 6401 0516 R32 5 6401 0517 R448A 5 6401 0518 R449A 5 6401 0519 R513A 5 6401 0520 R452A 5 1 See Section 5 for information on Parameter 11 and other config...

Страница 14: ...ector will have a lower accuracy for the target refrigerant without calibration In this example that accuracy is r16 of reading Optional Recalibration For Improved Accuracy By applying calibration gas...

Страница 15: ...01 0500 MGS 250 Broadband 6401 0501 MGS 250 R22 6401 0502 MGS 250 R123 6401 0503 MGS 250 R134a 6401 0504 MGS 250 R404a 6401 0505 MGS 250 R407a 6401 0506 MGS 250 R407c 6401 0507 MGS 250 R407f 6401 0508...

Страница 16: ...its 1 Data bits 8 Parity None odd even programmable Stop bits 1 or 2 programmable Retry time 500 ms min time between retries End of msg Silent 3 5 characters Alarm Delay Selectable 0 to 15 minutes IP...

Страница 17: ...d easily reached switch or circuit breaker as means of disconnection NOTE Connect monitor power and signaling terminals using wiring that complies with local electrical codes or regulations for the in...

Страница 18: ...ely sources of leakage such as the compressor expansion valves mechanical joints or cable duct trenches o Perimeter Detection where gas detectors completely surround the area or equipment x Halocarbon...

Страница 19: ...sp the back edge of the housing near the latch and pull the back away When mounted the housing is simply opened by pressing the top latch with a suitable screwdriver or other flat blade With the top l...

Страница 20: ...ounting holes on the base Junction Box Mount Attach the MGS 250 base to the junction box using mounting hardware provided with your junction box through the two junction box holes Refer to Figure 6 fo...

Страница 21: ...MGS 250 Manual 6490 9000 Revision 4 21 Figure 6 Front and Back Views of MGS 250 Base www calcert com sales calcert com 1 888 610 7664 0 5 10 15 20 25 30...

Страница 22: ...he top latch with a suitable screwdriver or other flat blade With the top latch depressed pull the housing apart by grasping the sides and pulling straight out Align and press together to close Figure...

Страница 23: ...er the MGS 250 Connect wiring to the appropriate terminal locations see Table 5 Use 2 wires between 14 and 22 AWG Refer to Figure 8 for AC wiring left or DC wiring right Figure 8 Supply Power Wiring O...

Страница 24: ...lated from line voltage by double insulation or x an appropriately rated UL listed CSA Class 2 transformer Failure to comply can result in personal injury or death WARNING Neutral polarity must be mai...

Страница 25: ...display Connect two 18 to 20 AWG wires to terminal block positions 5 and 6 see Figure 10 noting ground and signal polarity per Table 6 Figure 10 Analog Output Wiring Table 6 Alarm Output Terminal Blo...

Страница 26: ...le Relay Output Wiring NOTE The relay can be programed to be failsafe normally energized By default the relay is set to be normally de energized This can be set using parameter P 06 Make relay connect...

Страница 27: ...ee Figure 12 noting inverted B and non inverted A signal connectors per Table 8 Figure 12 Modbus Network Wiring Table 8 Modbus Network Communications Connections Function Pin Wiring Termination Modbus...

Страница 28: ...y If the MGS 250 is at the end of the RS 485 network then be sure to set the RS 485 terminator on the printed circuit board PCB to IN This applies a terminating resistor to the end of the wires per th...

Страница 29: ...re the top and bottom snap locks are engaged IMPORTANT If the right cable gland was not needed during installation and wiring be sure to install the blanking plug IMPORTANT Do not apply caulking or ot...

Страница 30: ...for freezer applications To manually zero the gas detector press and hold the UP and DOWN buttons simultaneously for 5 seconds The gas detector will beep and the display will show zEro when zeroing i...

Страница 31: ...udes a 20 dead band to prevent alarm chatter if the concentration hovers near the alarm setpoint Once the alarm has been triggered it will remain latched until the concentration drops below 80 of the...

Страница 32: ...ecoverable condition Please refer to Section 8 for more information The following occurs when a critical fault condition exists Table 11 MGS 250 Behavior during a Critical Fault Item Behavior During C...

Страница 33: ...e the display for 10 seconds Buttons functions are listed in Table 12 Table 12 Button Functions Button Description Used to access the parameter list Used to back up one level without writing to memory...

Страница 34: ...arameters Table 13 Parameter Numbers Names and Descriptions Parameter Description Maintenance Mode Sets gas detector to offline mode for 30 minutes 00 Gas detector is online with normal response to it...

Страница 35: ...urs default to energizing at power up Failsafe In both cases the relay changes state when an alarm occurs failsafe is simply inverted This allows power failures to be detected as alarms 00 NO default...

Страница 36: ...eration or specific gas name for gas specific mode Broadband Select from 4 groups of gases 1 R134a R404a R407a R407c R407f R427a R507 HFO1233ZD R448a R449a 2 R422a R422d HFO1234YF and HFO1234Ze R513a...

Страница 37: ...to 0 Baud Rate Sets the baud rate for Modbus RS 485 communications 00 9 600 baud default 01 19 200 baud Stop Bits Sets the number of stop bits required to match the controlling communications equipmen...

Страница 38: ...the ppm level is greater than the programmed analog output Full Scale ppm P 16 the analog output will go to a 10 over range state indicating that the concentration is too high for the analog output to...

Страница 39: ...MGS 250 Manual 6490 9000 Revision 4 39 Figure 15 Analog Output Scaling Options www calcert com sales calcert com 1 888 610 7664 0 5 10 15 20 25 30...

Страница 40: ...centration replaces the four dashes See section 6 4 if using Gas Test Mode to initiate the calibration procedure NOTE To prevent false alarms all outputs are suspended while Test Mode is active The on...

Страница 41: ...in troubleshooting the operator may choose to reset the gas detector to its default state by holding both the UP and DOWN buttons for 5 seconds while in the Diagnostics Menu All settings including the...

Страница 42: ...minals NOTE The detector display is OFF when filtering is OFF P 09 is disabled NOTE Whenever filtering is OFF the detector display will turn ON for 10 minutes if the detector is re zeroed see Section...

Страница 43: ...t should never exceed 2 years CAUTION In applications where life safety is critical calibration gas adjustment should be done quarterly every 3 months or on a more frequent basis Bacharach is not resp...

Страница 44: ...calibration may be determined by local regulation or standards EN378 and the F GAS Regulation require an annual check in accordance with the manufacturer s recommendation 6 2 Bump Testing vs Adjusting...

Страница 45: ...hers that testing is underway During bump testing the alarm outputs are active and will trigger whatever response is intended It is the operator s responsibility to ensure that such actions are accept...

Страница 46: ...der Monitor the LED display reading Refer to the specifications section for acceptance criteria Figure 16 Using Calibration Gas 6 4 Adjustment Using Calibration Gas Adjustment Using Calibration Gas re...

Страница 47: ...ur dashes NOTE The analog outputs relay activity and RS 485 ppm reporting are suspended in Gas Test Mode to prevent false alarms 3 Expose the gas detector to gas from the cylinder Monitor the 4 digit...

Страница 48: ...he gas detector will enter offline mode for a period of 10 minutes This allows time for the calibration gas to dissipate after testing During offline mode the gas detector suppresses all outputs The d...

Страница 49: ...eption of some of the communications parameters parameters you can access and or configure from the front panel of the MGS 250 can also be accessed and or configured via a Building Management System f...

Страница 50: ...level 0 100 FS 1001 Concentration gas level 0 65 535 ppm 1002 Reserved 1003 Full scale detector level 0 65 535 ppm 1004 Alarm set point full scale 0 100 1005 Gas detector timer 0 65 535 hours 1006 Nod...

Страница 51: ...15 min P 05 2004 Relay action 0 NO 1 Failsafe none P 06 2005 Relay latching enable 0 Disable 1 Enable none P 07 2006 Buzzer enable 0 Disable 1 Enable none P 08 2007 Display mode 0 Off 1 On none P 09 2...

Страница 52: ...or 1 ON 0 1 3004 Green LED state 0 or 1 powered on 0 1 3005 Reserved 3006 Start up 0 normal operation 1 warming up 0 1 3007 Reserved 3008 Reserved 7 6 Output Status Flags Output Status Flags are reada...

Страница 53: ...or the environmental conditions to return to a more typical condition correcting wiring mistakes or in some cases relocating the gas detector For example placing the gas detector near a forced air hea...

Страница 54: ...connection and or termination issue exists When analog output type is 4 20ma and loop is open use 18 24AWG shielded twisted pair with 120 ohm characteristic impedance for Modbus connections Modbus Fa...

Страница 55: ...st see Section 5 and select P 18 Press the Enter button to access the diagnostics and then use the UP or DOWN button to select each attribute The following information is available Table 19 Diagnostic...

Страница 56: ...esetting MGS 250 to Default Values The gas detector may be reset to its default state if needed to aid in troubleshooting All settings including alarm setpoint gas adjustments selected gas curve calib...

Страница 57: ...seconds the user is returned to the parameter list at parameter P 18 4 The gas detector may now be re programmed for further troubleshooting if needed 8 4 Other Symptoms Other common wiring problems c...

Страница 58: ...6400 0025 Gas Detector Module R422d Calibrated 1 6400 0026 Gas Detector Module R427a Calibrated 1 6400 0027 Gas Detector Module R507 Calibrated 1 6400 0028 Gas Detector Module HFO1234YF Calibrated 1 6...

Страница 59: ...arters of Bacharach Inc NOTE The Directives or Harmonized Standards to which this product has been evaluated may have changed Bacharach Inc however continues to market this product under a presumption...

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