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GHM Martens ST125M, Operating Manual

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GHM Martens ST125M Operating Manual Download Page 13

 

 

BA_MA_STTV125M_EN_V1.2 

 

 

11 / 24 

Universal isolating amplifier TV125M / ST125M 

 

  Operating steps, functional description, output 

4.1 Operating steps, functional description 

 

 
 
 
 

 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  

 

 
 

 

 

 
 
 
 
 
 
 
 

Status LED 

Description 

Green LED illuminates 

Operating voltage connected 

Red or green LED 
blinks 
 

See 

4.2 Status-LED

 

Red LED illuminates  (> 2 s) 

See 

4.2 Status-LED

 

Table 4 Status-LED 

Trimmer 

Adjustment 

TR1 

Starting value 

TR2 

End value 

Table 5 Trimmer 

 

 

 

Status-LED 
 

TR2 
 

S1: On 

 Off 

S2: On 

 Off 

S3: On 

 Off 

S4: On 

 Off 

 

 

 

 

 

TR1 
 

Figure 8 
Front plate 

Summary of Contents for Martens ST125M

Page 1: ...Operating Manual Universal Isolating Amplifier TV125M ST125M EN Save for later reference...

Page 2: ...assembly 9 3 2 Electrical Installation 9 3 3 Connection Diagram 10 Operating steps functional description output 11 4 1 Operating steps functional description 11 4 2 Status LED 13 4 3 Output 13 4 4 Tr...

Page 3: ...elevant characteristic data must be observed in this connection see 6 1 Safety related key values The approval for all intrinsically safe operating equipment is voided if it has been previously connec...

Page 4: ...ning This symbol warns of imminent danger which can result in death severe bodily injury or severe property damage in case of non observance Attention This symbol warns of potential dangers or harmful...

Page 5: ...fications in this document are checked regularly and any necessary corrections are incorporated into subsequent versions This document is subject to technical changes In addition all claims are based...

Page 6: ...the measuring range can be adjusted with the two trimmers on the front side The device version ST125 provides an additional transmitter feed for external 2 3 wire sensors The devices can also be used...

Page 7: ...auxiliary voltage Terminals for current output Type plate connection diagram Status LED Trimmer for end value adjustment DIP switches for configuration of in output Trimmer for starting value adjustm...

Page 8: ...BA_MA_STTV125M_EN_V1 2 6 24 Universal isolating amplifier TV125M ST125M 2 4 Block circuit diagram Figure 2 Block circuit diagram...

Page 9: ...solating amplifier TV125M ST125M 2 5 Type Label The type plate contains the most important identification data Connection diagram Manufacturer Type and article description Technical specifications Ser...

Page 10: ...rail TS35 A corresponding version is available for the entire LP series of GHM carrier rail devices in a housing with 12 5 mm width A bus adapter compatible with series connection is clamped on the c...

Page 11: ...terminal strip Terminals 41 and 42 are intended for the input and terminals 51 and 52 are for the transmitter feed The active analogue output is provided at terminals 31 and 32 Three are two DIP switc...

Page 12: ...ering 4 wire source loop powering 2 wire 0 4 20 mA source external loop power 3 wire source external loop power 2 4 wire sourcer external loop power acitve Table 3 ST125M TV125M wiring examples Auxili...

Page 13: ...ional description Status LED Description Green LED illuminates Operating voltage connected Red or green LED blinks See 4 2 Status LED Red LED illuminates 2 s See 4 2 Status LED Table 4 Status LED Trim...

Page 14: ...ff 0 20 mA Output configuration S2 On 2 10 V S2 Off 4 20 mA Table 7 DIP switches S3 and S4 Configuration matrix Configuration S1 S2 S3 S4 Input Output 1 Off Off Off Off 4 20 mA 4 20 mA 2 Off Off Off O...

Page 15: ...2 V 10 5 V 2 10 V 1 9 10 25 V linear 1 8 V 10 5 V 0 20 mA 0 2 20 5 mA linear 0 4 mA 21 mA 4 20 mA 3 8 20 5 mA linear 3 6 mA 21 mA Table 10 Modulation range 4 4 Transmitter power supply ST125 only Char...

Page 16: ...xiliary power check to ensure the correct configuration After the auxiliary voltage is connected a check of the device function takes place according to the requirement for functional safety The devic...

Page 17: ...k alternatingly 2 x green 1 x red Under modulation input 0 3 mA 0 15 V resp 3 7 mA 1 85 V Check the plug in terminal strip for firm seating Check for open circuit Check auxiliary voltage Check signals...

Page 18: ...directive 2014 34 EU ATEX directive Functional safety EN 61010 1 2010 A1 2019 A1 2019 AC 2019 EN 61326 1 2013 group 1 class A EN 61326 3 1 2017 EN 60079 0 2018 EN 60079 7 2015 EN 60079 11 2012 EN 615...

Page 19: ...Functional safety SIL2 parameters acc to EN61508 and SN29500 Level SIL 2 Parameters acc to EN 61508 and SN 29500 for Input type 4 20 mA or 2 10 V and Output type 4 20 mA or 2 10 V Device type B HFT 0...

Page 20: ...Intended use areas of application ATEX limit value input circuit input Terminals 41 and 42 Output voltage U0 27 6 V Output current I0 1 3 mA Output power trapezoidal characteristic P0 9 6 mW Input vol...

Page 21: ...BA_MA_STTV125M_EN_V1 2 19 24 Universal isolating amplifier TV125M ST125M 6 2 Mechanical design dimensions Figure 10 Dimensions...

Page 22: ...ST125MP Transmitter power supply Power supply 24 V DC 15 via rail mounted connecting terminal Power Rail 2 Explosion protection 00 No intrinsically safe input and no intrinsically safe transmitter pow...

Page 23: ...ust request that you strictly observe the following requirements On the GHM homepage under info desk forms a return shipment form can be downloaded The repair can be performed quickly and without call...

Page 24: ...Repairs processing Defective products are repaired professionally and quickly in our service center Open hours and contact Monday to Thursday from 8 00 to 16 00 Friday from 8 00 to 13 00 GHM Messtechn...

Page 25: ...BA_MA_STTV125M_EN_V1 2 23 24 Universal isolating amplifier TV125M ST125M Certificate of Conformity...

Page 26: ...BA_MA_STTV125M_EN_V1 2 24 24 Universal isolating amplifier TV125M ST125M...

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