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Model: CDU-LCD 

 

 

 

Doc. Ref. no.:- mMP/om/601 
Issue no. 00.06 

 

 
User’s Manual

                                                                                                 

Page 5 of 32       

 

 
Safety Precautions  

The product and the instruction manual describe important information to prevent 
possible harm to users and damage to the property and to use the product safely. 

 

Understand the following description (signs and symbols), read the text and 
Observe Descriptions. 

DESCRIPTION OF SIGN 

 
 
 
 
 
 
 
 

Accessory

 

The product is provided with the following accessory (see the Table 1 below). 

 

Table 1 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

No 

Item name 

Part number 

Qty 

Remarks 

Wired RH+T Sensor 

CBL-CDU-TRH-10   

 

Summary of Contents for CDU-LCD

Page 1: ...SPLAY UNIT C CD DU U L LC CD D Masibus Automation Instrumentation Pvt Ltd B 30 GIDC Electronics Estate Sector 25 Gandhinagar 382044 Gujarat India 91 79 23287275 79 91 79 23287281 82 Email support masi...

Page 2: ...NS MOUNTING DETAILS 7 4 TERMINAL CONNECTIONS 9 4 1 How to connect wires 9 5 Start UP and Basic Operation 10 5 1 Power ON 10 5 2 Use Interface 10 6 Menu Layout 13 6 1 Run Page 13 6 2 Temperature Page 1...

Page 3: ...ith respect to AHU Status 29 11 FAQ 29 1 When CDU will Display OVER Message 29 2 Why time synchronization is required 29 3 How to know that connection is break between CDU and Sensor 29 4 What will ha...

Page 4: ...ystems Incorporated All other product names mentioned in this user s manual are trademarks or registered trademarks of their respective companies Checking the Contents of the Package Unpack the box an...

Page 5: ...prevent possible harm to users and damage to the property and to use the product safely Understand the following description signs and symbols read the text and Observe Descriptions DESCRIPTION OF SI...

Page 6: ...rface RS485 2 Wire Protocol DNP3 Baud Rate 9600 19200 38400 bps Digital I P No of DI 1 Input Type Non Voltage Contact Rating 24VDC at 5mA Purpose Door status Data Logging Memory 64Mbits Record Type Da...

Page 7: ...lectable set limits for process value violation Incorporates built in Differential Pressure sensor 3 PHYSICAL SPECIFICATIONS MOUNTING DETAILS Enclosure Protection IP 20 IP 65 Enclosure Back Part W mm...

Page 8: ...Model CDU LCD Doc Ref no mMP om 601 Issue no 00 06 User s Manual Page 8 of 32 CDU LCD IP 20 CDU LCD IP 65 Fig 3 1 Whole Assembly Drawing...

Page 9: ...e suitable for Voltage Current and temperature rating of the system Provide power from a single phase instrument power supply If there is a lot of noise in the power line insert an insulating transfor...

Page 10: ...s model name software version and initializing sequence and after initialization shows RUN window as below Note Run Window may differ as per model 5 2 Use Interface Every time CDU LCD is switched on i...

Page 11: ...tion and Humidity alarm symbol Alarm symbol description is given in table 4 Note If Sensor is not working properly humidity value will start blinking and value will be displayed according to sensor br...

Page 12: ...ion Symbol Communication symbol description as below Symbol Description 1 1 Device is receiving some Data 1 1 Device is transmitting some Data 1 1 Device is not receiving some Data 1 1 Device is not t...

Page 13: ...on 5 2 6 2 Temperature Page Temperature page shows Temperature as main parameter and humidity and Differential Pressure as secondary parameter Set point value is also displayed Value on left hand side...

Page 14: ...ty page shows Humidity as main parameter and temperature and Differential Pressure as secondary parameter Set point value is also displayed Value on left hand side of slider shows Low Set Point and ri...

Page 15: ...re page shows Differential Pressure as main parameter and temperature and humidity as secondary parameter Set point value is also displayed Value on left hand side of slider shows Low Set Point and ri...

Page 16: ...CDU LCD Doc Ref no mMP om 601 Issue no 00 06 User s Manual Page 16 of 32 6 5 Time Page Time page shows current date and time as shown in below To enter Time page click on time window on run page as b...

Page 17: ...r DNP3 protocol Slave ID for Modbus Protocol Baud Rate Baud rate for Communication Sensor Available Available Sensor Internal Sensor DP Unit can be used for measurement of Differential Pressure Intern...

Page 18: ...Ref no mMP om 601 Issue no 00 06 User s Manual Page 18 of 32 To enter Info page click on info icon on run page as below Note User can directly change from one page to other by clicking on parameter va...

Page 19: ...oint 1 calibration and span point 2 calibrations are required Zero calibration The value should be calibrated to zero only Example if process value is 2 then calibrate that value to 0 Span Point 1 Cal...

Page 20: ...LCD Doc Ref no mMP om 601 Issue no 00 06 User s Manual Page 20 of 32 For span point 2 calibrations user can enter value or default point is also given set appropriate source and press button PRS Span...

Page 21: ...set Multiple register Use to write programmable register Time Serial No etv Table 7 The error checking field contains a 16 bit value implemented as two eight bit bytes The error check value is the res...

Page 22: ...to 10 For RH 1 Resolution 1 40033 Sensor Break Set Sensor Break Value 0 MIN Display minimum value of humidity range 1 LAST Display Last value of parameter in CDU 2 MAX Display Maximum Value of humidi...

Page 23: ...Sensor Break Set Sensor Break Value 0 MIN Display minimum value of Differential Pressure range 1 LAST Display Last value of parameter in CDU 2 MAX Display Maximum Value of Differential Pressure range...

Page 24: ...data after maximum limit 4 lakh of log is reached User has to clear data using SCADA or Utility software 2 In OVERLAP type CDU will reset counter after maximum limit is reached so old data will be lo...

Page 25: ...Pressure Calibration Point 1 for Differential Pressure 1200 40094 Calibration Span Point 2 for Differential Pressure Calibration Point 2 for Differential Pressure 1250 40095 Calibration Mode Calibrati...

Page 26: ...MUNICATION PROTOCOL DNP 3 9 1 Introduction The unit can be connected in RS 485 communication data link either in multi drop or repeat mode Each unit must have unique Destination ID Entire range of add...

Page 27: ...oint 1 of Differential Pressure L 3 Integer R W 5 Set point 1 of Temperature L 4 Integer R W 6 Set point 1 of Humidity L 5 Integer R W 7 Acknowledge Write 6 Integer R W 8 Buzzer Delay 7 Integer R W 9...

Page 28: ...urated Vapor density of the air RH Actual Vapor density Saturated Vapor density 100 10 2 Troubleshooting If the operating display does not appear after turning on the unit s power follow the measures...

Page 29: ...n is required To avoid data mismatch between SCADA and CDU 3 How to know that connection is break between CDU and Sensor If the Sensor Remote Sensor for RH T Inbuilt Sensor for Differential Pressure w...

Page 30: ...HOLD When memory is full error code in status bar is 4 and buzzer will start if Log Alarm is selected Buzzer ON Buzzer can be acknowledged by pressing the acknowledgement button on LCD 8 How to analys...

Page 31: ...ferential Pressure value Point number 2 gives Temperature value Point number 3 gives Humidity value Point number 4 gives error code Point number 5 gives is reserved for future use Point number 6 gives...

Page 32: ...CDU power off at 17 24 45 Step 3 CDU power on at 17 26 38 CDU power on it will punch high value of log for HT and DP with time 17 26 31 11 Why does the maximum sensor value not punch at power on If th...

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