Modbus air pressure sensor with I/O extension: QBM97..
Contents Legal note .................................................................................................... 3 Safety notes in the data sheet................................................................................3 1 1.1 1.2 1.3 1.4 Installation........................................................................................... 4 Mounting .....................................................................................................4 1.1.1 Dimensions .......................
Legal note Safety notes in the data sheet Legal note Legal note concept This guide includes notes that must be followed for your own personal safety as well as to prevent damage to property. Notes dealing only with damage to property do not have the warning triangle and use the signal word NOTICE and an exclamation point.
1 Installation Mounting 1 Installation 1.1 Mounting NOTICE Tip Mount the sensor in a location that is easy to open the cover and access the terminals, DIP switches and view the LEDs. Proceed as follows to mount the sensor to a surface: ● Screw the sensor at the 2 brackets (on the device sides) to the mounting surface. ● Keep the following guidelines min. 75 134 5.5 Fig.
Installation 1 Mounting 1.1.1 Dimensions QBM97.. (all dimensions in mm) 146 60 35.5 11.3 5.5 81.9 45 134 9 10 33 42 Side view QBM97.. (here: without M12) 6 Front view QBM97.. (here: without M12) 40 6 3.4 78.5 60 100 1-4 16 151.4 70 28 6.5 4 16 56 175 Bottom view QBM97..
1 Installation Quick release fasteners and detached cover 1.2 Quick release fasteners and detached cover ● Open the housing with the quick release fasteners 1 2 ● 1 The cover can easily be detached completely 2 2 90° 1 1.
Installation Wiring 1 1.4 Wiring 1.4.1 Electrical grounding Situation Note the following grounding situation of the QBM97.
1 Installation Wiring 1.4.2 Power supply Terminal 24V≂ →, ,24V≂ ← Note 8 | 22 24V 24V Diagram Earth is optional.
Installation Wiring 1 1.4.3 Signal wiring The following graphics illustrate all signal types of a QBM97. 1.4.3.1 Analog inputs Analog inputs for passive sensors Use Connecting passive temperature sensors.
1 Installation Wiring 1.4.3.2 Analog outputs Analog outputs with voltage signal Use Connecting devices that are controlled with a 0...
Commissioning Addressing 2 2 Commissioning 2.1 Addressing 2.1.1 DIP switches (Climatix and other controllers) Use DIP switches for adjustment of the Modbus address and for termination. ● The DIP-switches have priority over register 4x0764 (Modbus address). ● The Modbus address (register 4x0764) is valid as soon as all DIP switches are on '0'. ● Changes of DIP switches are effective after 5 seconds.
2 Commissioning Addressing 2.1.2 On-event addressing (Climatix controllers) On-event addressing works together with Climatix controllers. On-event addressing performs several functions that otherwise would have to be done 'manually': Workflow w The QBM97.. sensor is wired and connected to the controller via Modbus. w The DIPs 1…8 (addressing DIPs) are set to '0'. w The on-event addressing functionality is configured in the application.
Commissioning 2 Fault detection, correction or reset 2.
3 Engineering Implementing volume flow measurement 3 Engineering 3.1 Implementing volume flow measurement In addition to normal (differential) pressure measurement, the QBM97.. provides volume flow measurement (f.e. used with 3rd party controllers). Flow is a volume per time. It is related to differential pressure according to the following formula: Flow measurement with QBM97.. is set up in an application as follows: 1.
Engineering 3 Modbus registers 3.2 Modbus registers Supported function codes 03 (0x03) Read holding register 04 (0x04) Read input registers 06 (0x06) Write single register 16 (0x10) Write multiple registers Any changes of settings are completed with setting 4x0768 (Bus config command) to "1" (toggle bit).
3 Engineering Modbus registers Analog Input 1 Addr Description 4x0020 Reliability 4x0021 Value 4x0022 Sensortype AI1 Unit °C / mV Scaling R/W Range Data type 1 R uint16_t 0.
Engineering 3 Modbus registers Analog Output 1 Addr Description Unit Scaling R/W Range Data type 4x0027 Value mV 1 R/W 0 ≤ VAL ≤ 10500 uint16_t 4x0028 Dependence 1 R/W 0 = value @ 4x0027 = default if 4x0003=1 uint16_t 1 = with Analog input 1 2 = with Analog input 2 3 = with pressure sensor 1 = default if 4x0003=0 4 = with pressure sensor 2 4x0029 Scaling low - (0.0V) mV 1 R/W 0 ≤ VAL < Scaling high (0 = default) uint16_t 4x0030 Scaling high - (10.
3 Engineering Modbus registers Analog Output 2 Addr Description Unit Scaling R/W Range Data type 4x0057 Value mV 1 R/W 0 ≤ VAL ≤ 10000 uint16_t 4x0058 Dependence 1 R/W 0 = value @ 4x0057 = default if 4x0003=1 uint16_t 1 = with Analog input 1 2 = with Analog input 2 3 = with pressure sensor 1 4 = with pressure sensor 2 = default if 4x0003=0 4x0059 Scaling low - (0V) mV 1 R/W 0 ≤ VAL < Scaling high (0 = default) uint16_t 4x0060 Scaling high - (10V) mV 1 R/W Scaling low < VAL (1000
Engineering 3 Modbus registers Flow (Diff-pressure Sensor 2) Addr Description 4x0091 Unit Scaling R/W Range Data type Flow low 0.01 R uint16_t 4x0092 Flow high 0.
4 Maintenance Save mode and analog outputs 4 Maintenance 4.1 Save mode and analog outputs The QBM97.. is delivered with a 'Save mode' function to prevent damage in the event of an open circuit to the Modbus connection. The analog outputs are switched to DC 0 V if communication is lost for > 60 seconds. 4.2 Zero reset Perform the zero reset without tubes Afterwards connect the tubes again Blue 10...
Additional information 5 5 Additional information Document title Topics Document ID: Datasheet: Modbus air pressure sensor with I/O extension: QBM97.. Functions, use, technical data, terminals, dimensions and Modbus registers A6V11478118 User guide: Modbus air pressure sensor with I/O extension: QBM97..
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