Summary of Contents for SSI A20829
- Page 1 PN: A20830 PN: A20829 Single Gas H (Hydrogen) Sensor Modules With Optional O Input OPERATIONS MANUAL Super Systems Inc. 7205 Edington Drive Cincinnati, OH45249 513-772-0060 Fax: 513-772-9466 www.supersystems.com...
- Page 2 Super Systems Inc. USA Office Super Systems Europe Corporate Headquarters: Unit E, TyburnTrading Estate, 7205 Edington Drive Ashold Farm Road, Birmingham Shipping Address: B249QG 7245 Edington Drive UNITED KINGDOM Cincinnati, OH 45249 Phone: +44 (0) 121 306 5180 Phone: (513) 772-0060 http://www.supersystemseurope.com http://www.supersystems.com Super Systems China...
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Page 3: Table Of Contents
Single Gas Sensor Module (SGSM) Operations Manual Table of Contents Introduction ............................. 4 Specifications ..........................4 Connections Diagram ........................5 A20829 ............................5 A20830 ............................6 Connection Ports & Function ...................... 6 Mounting ............................7 A20829 ............................7 A20830 ............................8 Modbus ............................ -
Page 4: Introduction
Single Gas Sensor Module (SGSM). The in-situ H sensor (A20829) is designed to mount directly to a vertical pipe on a furnace, while the flow-through sensor (A20830) is designed to be mounted on DIN rail. For compliance with electrical connection standards, the in-situ H sensor functions are routed to a 10-Position plug and an included connection cable. -
Page 5: Connections Diagram
Single Gas Sensor Module (SGSM) Operations Manual Connections Diagram The following diagrams show the connections for the two versions of the SGSM. A20829 Figure 1 - Connections diagram for A20829 Wire Color Function +VDC Power supply (24VDC @ 750 mA)**... -
Page 6: A20830
Figure 2 - Connections diagram for A20830 **Note that both the A20829 and A20830 will accept 10 – 30 VDC power. They are commonly powered using a 24 VDC supply. When a Lambda O sensor is required, consider using a 12 VDC supply for both the SGSM and the Lambda sensor. -
Page 7: Mounting
See illustrations. Figure 3–Mounting/Plumbingdiagram for A20829 Other mounting locations are possible, but must be tested and verified prior to using for measurement and control of the furnace atmosphere. Contact SSi if there are questions about the mounting location. Super Systems Inc. -
Page 8: A20830
This unit is designed to be mounted to 35 mm DIN rail. Figure 4 – Connections diagram for A20830 Modbus A20829 The in-situ H sensor has DIP switches located inside of the enclosure for setting the Modbus address. The Modbus address is set to 1 by default. Photos below show where the DIP switches are located inside of the enclosure. -
Page 9: A20830
Single Gas Sensor Module (SGSM) Operations Manual Figure 5 – Modbus DIP switch location for A20829 A20830 The DIP switches are accessible from the front of the unit without having to remove the cover plate. 1. Verify that the unit is not powered. Unplug the power connector to remove power. -
Page 10: Modbus Registers
Single Gas Sensor Module (SGSM) Operations Manual Modbus Registers The following table shows the Modbus registers for the SGSM. The name of the register, address location, and description are provided. NOTE: The gas percentage (multiplied by 10000) is located in register 1205. Register Name Register Location Description... - Page 11 Single Gas Sensor Module (SGSM) Operations Manual Register Name Register Location Description Calibration state. 0 = normal, 1 CUR_LOOP_CAL_REG = prep zero, 2 = store zero, 3 = prep span, 4 = store span CUR_LOOP_CAL_CHN Calibration channel Cal value. 20.12 mA would be CUR_LOOP_CAL_VAL 20120 CUR_LOOP_TARGET_VALUE...
- Page 12 Single Gas Sensor Module (SGSM) Operations Manual Register Name Register Location Description Upper Limit for a given type MB_ALARM_1_UPPER_LIMIT (first of 30) Action for a given type (first of MB_ALARM_1_ACTION SER_NUM_REG actual mapping from Advantech 1 = SNTP server write, 2 = MB_SET_TIME_WRITE manual write MB_SET_TM_YEAR...
- Page 13 Single Gas Sensor Module (SGSM) Operations Manual Register Name Register Location Description Settable register that allows WEBPAGE_ACCESS_CODE access to the webpages First of two bytes, memcpy'd 32 bit unsigned integer that SECOND_TIMER_VALUE increments every second forever MB_IP_ADDR IP Address MB_IP_MASK Subnet Mask MB_IP_GTWY Gateway...
- Page 14 Single Gas Sensor Module (SGSM) Operations Manual Register Name Register Location Description SENSOR_NH3_FLOW 1102 NH3 flow SENSOR_DA_FLOW 1103 DA flow SENSOR_H2_FLOW 1104 H2 Flow Process variable (0 = H2, 1 = DA, SENSOR_PV_MODE 1105 2 = NH3, 3 = Kn, 4 = Standard SENSOR_INPUT_TYPE_REG 1106 Input for voltage inputs...
- Page 15 Single Gas Sensor Module (SGSM) Operations Manual Register Name Register Location Description MB_READ_PER_SUPER_KN 1210 Super Kn MB_READ_STANDARD_KN 1211 Standard KN MB_READ_PROC_VAR 1212 Process variable MB_READ_GAS_TEMP 1213 Gas temperature Board modbus address MB_READ_BOARD_ADDR 1214 (important for slave only) MB_READ_MODEL_NUM 1215 MODEL number Map as reg 900 MB_READ_SET_FACT_DEF 1216 23205 = Full Defaults...
- Page 16 Single Gas Sensor Module (SGSM) Operations Manual Register Name Register Location Description MB_READ_GAIN_REG 1239 Gain MB_READ_AD_SCALED_VDC 1241 Scaled VDC MB_READ_TC_PROC_VAR 1243 TC process variable MB_READ_PERC_O2 1245 Based on Nernst equation MB_READ_PERC_O_DP 1246 decimal point for O2 floating point value for O2 (w MB_READ_PERC_O2_FP 1247 registers)
- Page 17 Single Gas Sensor Module (SGSM) Operations Manual Register Name Register Location Description First of 5 calibration error MB_READ_CAL_ERROR_REG 1295 calculations volts at zero (for NDIR cell, 100 MB_READ_ZERO_VOLT_CAL 1300 = ref, 101 gas) MB_READ_ZERO_TEMP_CAL 1302 temperature at zero volts at span (for NDIR cell, 103 MB_READ_SPAN_VOLT_CAL 1303 = ref, 104 gas)
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Page 18: Initial Network Configuration
Once the unit is connected to the network, you should be able to locate it using SSi’s software. This program is available from SSi. To use it in locating the unit on the network, follow these steps on a Windows-based PC: 1. - Page 19 Single Gas Sensor Module (SGSM) Operations Manual 4. Look for identifying text in the list of instruments. It includes the type of instrument and serial number. It also provides the IP Address information for the sensor. 5. Click the Configure button and choose the sensor to change its IP Address settings. 6.
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Page 20: Control Interface Via Web Browser
(such as subnet mask) may be different, the unit may be connected to a different network, or the unit may not be powered on. SSi recommends consulting an IT engineer or network administrator. If needed, call SSi at (513) 772-0060. -
Page 21: Main
Single Gas Sensor Module (SGSM) Operations Manual Main The main page displays the percentage composition of the gas for which the SGSM is configured. The oxygen measurement as well as other calculated values can be added to the display screen if desired. In the example below, the percentage composition of H is displayed. -
Page 22: Sensor Information
Span Target %: A record of the span target % from the most recent calibration. Note that these values are for diagnostic use only. Call SSi at (513) 772-0060 with questions. Figure 9- Sensor Information Page Super Systems Inc. -
Page 23: Instrument Configuration
CO2 Pres.: This is a special calculation for specific applications. The input should be set to 0 as a default, unless specifically discussed with SSi. Sup Neg: (Suppress Negative) When activated, any negative readings will be treated as zero. - Page 24 The “External” option is for special cases where an additional analog output is required from an external source. Contact SSi for additional details about this option. The Output Configuration screen allows you to adjust output parameters for loops 1 and 2.
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Page 25: Output Calibration
(zero value for the lowest value and span value for the highest value). SSi suggests that this device should be calibrated on a routine basis, such as once a year or as prescribed by the user’s quality system requirements. -
Page 26: Sensor Calibration
Performing only a zero or span calibration will cause the sensor to give an erroneous reading. SSi suggests that this device should be calibrated on a routine basis, such as once a year or as prescribed by the user’s quality system requirements. - Page 27 Single Gas Sensor Module (SGSM) Operations Manual might see up to 75% H , the span gas should contain at least 75% H in its chemistry. The gases should be “Certified Primary Standards” or equivalent accuracy. Then, follow these steps: 1.
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Page 28: A20830
Single Gas Sensor Module (SGSM) Operations Manual Figure 14 – Span Calibration Gas Initial Purge 9. Redirect gas flow through the tee fitting and close the calibration port at the top of the sensor (see illustration below). Wait for the gas reading to stabilize for a minimum of 5 minutes and until the gas reading on the web page has stabilized. - Page 29 That flow is generally 1 to 2 cfh, but may be different for each application. SSi suggests that this device should be calibrated on a routine basis, such as once a year or as prescribed by the user’s quality system requirements.
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Page 30: Input Configuration
The O2 input (when used) must be calibrated at the low and high ends of input voltage range to ensure accurate readings. SSi suggests that this device should be calibrated on a routine basis, such as once a year or as prescribed by the user’s quality system requirements. -
Page 31: Cj Trim
“Both” will activate both sets of Modbus registers associated with the alarms. Additionally, a red indicator light illuminates on the front of the enclosure when any alarm condition is met. Contact SSi for additional information on the alarm feature for this product. Super Systems Inc. -
Page 32: Ssi Configuration
SSI Configuration IMPORTANT! It is highly recommended that changes on this page be made only in consultation with SSi technical personnel. Call (513) 772-0060 for more information. The SSi Configuration page contains fields that can be adjusted to change various strings contained in memory and also change certain functions. -
Page 33: Read/Write Registers
SSi personnel and SSi support personnel who have been trained and authorized. Accessing this page requires a special code to prevent unwanted changes to critical settings. Please contact SSi before attempting to make any changes to the settings on this page. Figure 20 – Read/Write Registers Page Super Systems Inc. -
Page 34: Network Configuration
Operations Manual Network Configuration The Network Configuration page allows you to view network settings and change certain settings as well. SSi recommends consulting an IT engineer or network administrator before changing any of these settings. Figure 21 - Network Configuration Page The first two fields on the page show the MAC address and Host Name. -
Page 35: Replacement Parts
Single Gas Sensor Module (SGSM) Operations Manual Replacement Parts Part Part Number 12 VDC Power Supply, 75 W 31709 24 VDC Power Supply, 75 W 31135 Lambda Oxygen Sensor, 4-Wire Analog (12 VDC) 31435 Terminal Block, 6-Position 33305 Terminal Block, 3-Position 33310 Terminal Block, 2-Position 33311... - Page 36 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. SOME JURISDICTIONS DO NOT ALLOW THE LIMITATION OF IMPLIED WARRANTIES, SO THIS LIMITATION MAY NOT APPLY TO YOU. SSI is not responsible for returning to you product which is not covered by this limited warranty.
- Page 37 Single Gas Sensor Module (SGSM) Operations Manual Appendix A: DIP Switch Setting Examples Address: 1 Address: 9 Address: 17 ON n ON n ON n Address: 2 Address: 10 Address: 18 OFF n OFF n OFF n Address: 3 Address: 11 Address: 19 ON n ON n...
- Page 38 Initial release 10/4/2016 2196 Added Configuration Board Diagram and DIP 6/1/2017 2218 Switch Example Appendix Replaced A20829 diagram, replaced A20829 5/3/2019 2264 photo, updated specs table, added wire color/function info to connection diagram Corrected O2 Sensor Part Number 4/6/2021 2310...
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