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www.wobit.com.pl 

Manual  -MD150T – 27.10.2014 – v.1.3 

   page 4 

 

2.

 

Device description 

2.1

 

Intended use and properties 

MD150T

  is  an  universal  processing  display  indented  to  measurement  signals  from  load  cell  force 

sensors. Built-in analog-digital transducer allows for measurement with resolution up to 100.000 of 
measuring range. The measurement result is presented on six position display.

  

 
MD150T has multipurpose usage as well at industry as in laboratory, where averaged or precise force 
(weight) measurement is necessary. Depends on used sensor there is a possibility of  small masses in 
range as well small weights (grams) as large loads (tons).  
 
MD150T  has 

2  relay  outputs

,  and  2  dedicated 

inputs

  (one  tare  input).  Built-in  operating  modes 

enable the device to be used for dosing without any need for additionally controllers.  
 
MD150T  is  also  equipped  with 

USB

  and 

RS485  MODBUS 

interfaces.  USB  interface  allows  fast 

configuration  and  recording  measurement  data  in PC  (e.g.  to  Excel  file) with the  use  of MD150-PC 
software.  MODBUS-RTU  allows  for  reading  of  measurements  from  several  indicators  at  the  same 
time to PLC controller, HMI panel or its own PC application.  
 
One-level  menu  of  the  device  is  easy  in  use,  and  to  configure  the  device  for  specified  sensor  is 
needed only setting two parameters: 

constant bridge sensitivity 

(mV/V) and 

bridge range

 (N). User 

can also select units of displayed result.  
 
MD150T  has  full  aluminium  profile  housing  compliant  with  DIN43700  standard  which  guarantees 
high  mechanical  durability  and  resistance  to  adverse  environmental  conditions  including  electric 
interference. 

 

 
 

MD150T features: 

 

 

Result conversion to N, kN,  g ,kg, T, Funt, 

 

Digital filtering and average of 
measurements, 

 

Changes of status of relay outputs 
based on set thresholds.

 

 

Memory of minimal and maximal value, 

 

External tare input, 

 

Cooperation with MD150T-PC software 
(communication by USB) for configuration 
and visualization of measurements, 

 

RS485 MODBUS-RTU interface, 

 

Solid, aluminum housing.  

 

 

Picture. 1 Example of MD150T external connections.

 

 
 
 

Summary of Contents for MD150T

Page 1: ...t E J K s c D borzyce 16 62 045 Pniewy tel 48 61 22 27 422 fax 48 61 22 27 439 e mail wobit wobit com pl www wobit com pl MD150T Manual Digital processing unit with display for force sensors without a...

Page 2: ...s 13 9 2 Measuring range of sensor 13 10 Technical parameters 14 Thank you for selecting our product This instruction will help you at correct service and accurate exploitation of described device Inf...

Page 3: ...nments of unknown levels of interruptions it is recommended to use the following means preventing against possible interruptions of the device operation Ground or zero the metal rails on which instrum...

Page 4: ...iguration and recording measurement data in PC e g to Excel file with the use of MD150 PC software MODBUS RTU allows for reading of measurements from several indicators at the same time to PLC control...

Page 5: ...sensor Signal 3 S Signal sensor Signal 4 E Power supply sensor Excitatnion 5 TARA Tare input 5 24V 6 DIN2 Universal input 7 485A A Signal of RS485 interface 8 485B B Signal of RS485 interface 9 10 PK1...

Page 6: ...White White Yellow Green Tab 1 Description of cable colors for force sensors of WObit s offer CAUTION In longer period of time can happen that derivation colors can change Wrong connection do not caus...

Page 7: ...asurements 6 OFFS Offset for measuring value 999999 7 UNIT Units N kN g kg T funt 8 RATE Measurement frequency 10 Hz 80 Hz 9 FILT Level of averaging continuous filter 0 99 10 TRA Bridge range N config...

Page 8: ...key you confirm the introduced change and with key you abort the change or exit the menu Prolonged pressing of keys or results in automatic increase decrease of a given position value 4 Configuration...

Page 9: ...Units of measurement are set by 7 UNIT parameter The user has following units for selection 1 N Newton s 2 kN kilonewtons 2 g grams 3 kg kilograms 4 T tones 5 Funt pound Additionally 12 DP parameter...

Page 10: ...s set with the first digit and the last 4 digits are used for password entry 0 0000 4 digit password 0 9999 Protection level 0 Settings protection above 12 DP parameter 1 Settings protection above 3 P...

Page 11: ...ferrite beads at the cable beginning and its end Use of optically insulated USB hubs at PC side In the conditions of severe interference e g high interference of power grid the communication may not b...

Page 12: ...ppropriate conversion Conversion of 2 registries 4 Byte into 32 Bit number REAL Registry_2 HI Byte1 Registry_2 LO Byte0 Registry_3 HI Byte3 Registry_3 LO Byte2 Number _32_bit Byte3 24 Byte2 16 Byte1 8...

Page 13: ...ge tension force Range of measured force 0 75kN Example of models K1401 K1501 K1505 K1506 K1600 Round To measure large and small tension force Range of measured force 0 100kN Example of models KB52 KB...

Page 14: ...zero tolerance 2 of measuring range hysteresis 0 2 of range and creep measured in time of 30 minutes 0 1 Temperature factor of zero point and constant is 0 1 of range 10o C Bridge resistance on input...

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