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ZIEHL    industrie  –  elektronik    GmbH    +  Co    KG
Daimlerstr.13,  74523  Schwäbisch  Hall,  Germany
+ 49 791 504-0,    [email protected],    www.ziehl.de 

 
 

 

Temperature Relays and MINIKA®     Mains Monitoring       Digital Panelmeters MINIPAN®      Switching Relays and Controls       Measuring Transducers  Grid- and Plant Protection

 

 

Operating Manual STW81V

 

updated: 2022-09-21/Um

 

 

 

For more information and help about this product please scan the 

QR-Code 

or 

choose the following link: 

STW81V

 

 

 

Operating manual, Quick guide, Datasheet, Connection diagram, CAD Data 

 

Firmwareupdates, FAQ, Videos about installation and settings, Certificates 

 
 

STW81V 

12380-0710-00 

Page

 

1 /  8 

www.ziehl.de 

- Current relay, 8-channel, single eval OR-circuit, adjustable switching point 0,5 - 5 A 

 
 
 
 
 

 

 
 
 
 

 

 

Summary of Contents for STW81V

Page 1: ...Grid and Plant Protection Operating Manual STW81V updated 2022 09 21 Um For more information and help about this product please scan the QR Code or choose the following link STW81V Operating manual Quick guide Datasheet Connection diagram CAD Data Firmwareupdates FAQ Videos about installation and settings Certificates STW81V 12380 0710 00 Page 1 8 www ziehl de Current relay 8 channel single evalua...

Page 2: ... with the following instructions is mandatory to ensure the functionality and safety of the product If the following instructions given especially but not limited for general safety transport storage mounting operating conditions commissioning and disposal recycling are not observed the product may not operate safely and may cause a hazard to the life and limb of users and third parties Deviations...

Page 3: ...nputs Usage The STW81V current relay is particularly suitable for the central control of gate valves in extraction systems to be actuated according to the operating status of individual machines It can simultaneously control the central extraction system 5 Functional overview OR 8 inputs I1 I8 individual evaluation of 8 machines STWA1 H current sensor S1 or contact 8 relays for sliders with open a...

Page 4: ...responding relay activates and the yellow LED goes on If the current on STWA1 H falls below the set switching threshold the corresponding relay is de energized with a fixed delay of 10 seconds If it is the last relay energized it switches off 20 s after K9 At the same time all 8 inputs are OR connected If current is detected in at least one of the monitored circuits relay K9 closes contacts 95 98 ...

Page 5: ...gulations for the installation and operation of electrical systems The devices are built and tested according to DIN VDE EN IEC standards and leave the factory in perfect safety condition To maintain this condition follow the safety instructions in the manual marked Caution Failure to follow the safety instructions could result in death personal injury or property damage to the device itself and t...

Page 6: ...corresponding input of STW81V in parallel to the current transducer STWA1 H 750 Ω resistor increase by a factor 2 330 Ω resistor increase by a factor 4 Due to large tolerances that must be considered we recommend that the best values be determined by trial and error method Length of connecting cables STWA1 H Up to 50 m but much longer are also possible Shielding may be required when laid parallel ...

Page 7: ...action Capacity Utilization category AC 15 Ie 3 A Ue 250 V Nominal operating current Nominal operating voltage DC 13 DC 13 DC 13 Ie 2 A Ie 0 4 A Ie 0 2 A Ue 24 V Ue 120 V Ue 240 V Transducer connection Connectable transducers 1 STWA1 H transducer or potential free contact or 1 S1 current sensor per channel AC internal resistance ca 15kΩ Overload capacity STWA1 H max 100A continuous max 300A for 10...

Page 8: ...torque 8 mm 0 5 Nm Degree of protection Casing terminals IP 30 IP20 Fastening Snap on mounting on 35 mm mounting rail according to EN 60 715 or screw fixing M 4 additional clamp is not included Weight approx 300 kg Subject to technical changes 2 Type V8 Dimensions in mm 1 Upper part cover 2 Bottom part base 3 Snap bar for snap mounting 4 Sealing latch 5 Front panel insert front panel 6 Position do...

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