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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 MS220VA and MSR220VA

 

updated: 2019-02-06/Su 

 

 

MS220VA and MSR220VA 

11660-0701-03-GB 

Page

 

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www.ziehl.de 

 
PTC thermistor relay with short-circuit detection 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

   

 

  

 

   

 

 

 
Marking see type plate on the device - type examination certificate PTB 12 ATEX 3006 

 

 

Summary of Contents for MS220VA

Page 1: ...oring Digital Panelmeters MINIPAN Switching Relays and Controls Measuring Transducers Grid and Plant Protection Operating Manual MS220VA and MSR220VA updated 2019 02 06 Su MS220VA and MSR220VA 11660 0701 03 GB Page 1 12 www ziehl de PTC thermistor relay with short circuit detection Marking see type plate on the device type examination certificate PTB 12 ATEX 3006 ...

Page 2: ...ons and references for putting into operation 8 15 1 Special remarks for explosive gas atmospheres areas Zone 0 Zone 1 and Zone 2 8 15 2 Special remarks for use in the presence of combustible dust Zone 20 Zone 21 and Zone 22 9 15 3 Safety characteristics of the safety device 9 15 4 Category and Performance Level EN ISO 13849 1 9 15 5 Application of the safety device used with equipment category EN...

Page 3: ...fe due to the deviation from the specifications 2 Display and control elements 1 LED red ALARM 2 LED green Power ON 3 built in key button Reset 3 Pre Adjustment No settings are necessary on the devices The tripping temperature is determined solely by the response temperature of the connected PTC thermistors Depending on the number of PTC thermistors the following tripping temperatures and reset te...

Page 4: ...ontinuously the resistance of the sensors In cold state the resistance is 250 Ω per sensor sensor circuit 1 5 kΩ The relay has picked up and contacts 11 14 are closed The resistance of the thermistor rises rapidly at detector operating temperature TNF The relay release at a resistance of 3 4 kΩ and contacts 11 12 close The devices also switch off in the case of detector or line short circuit appro...

Page 5: ...dous voltage Will cause death or serious injury Turn off and lock out all power supplying this device before working on this device 9 Installation The applicant must observe safety rules and standards The device can be mounted on 35 mm rail according EN 60715 or with screws M4 Option The devices must be installed in a closed switchgear cabinet or in an enclosure of international protection class I...

Page 6: ...l Y1 Y2 can be used Terminals Y1 and Y2 may be bridged so the function reclosing lock is disabled 12 Trouble shooting and remedies Relay does not pick up Please check The supply voltage Us at terminals A1 A2 green LED lights up The PTC s at terminals T1 T2 In the case of disturbance the red LED lights up The resistance of a PTC circuit must be at 50 Ω R 1500 Ω The terminal voltage T1 T2 is to be m...

Page 7: ...current Max AC 415 V 5 A Min 12 V 10 mA Switching power max ohm resistive load 1250 VA 120 W at DC 24 V Rated operational current Ie AC15 Ie 3 A Ue 250 V DC13 Ie 2 A Ue 24 V Recommended fuse 4 A gG Mechanical contact life 3 x 107 operations Electrical contact life 1 x 105 operations at 240 V 6 A UL electrical ratings 250 V ac 3 A general use 240 V ac 1 4 hp 2 9 FLA 240 V ac 1 4 hp 2 9 FLA 120 V ac...

Page 8: ...nt 6 Characteristic for bottom 7 Extensible bolt for wall fastening with screws Bolt bore Ø 4 2 mm 15 Safety Instructions and references for putting into operation please read carefully 15 1 Special remarks for explosive gas atmospheres areas Zone 0 Zone 1 and Zone 2 The increased danger within hazardous areas requires the careful attention of the safety instructions and references for putting int...

Page 9: ...mode 1001 0 SIL 1 Type MTBF PFH SFF SD SU DD DU MS220VA 54 years 4 07E 07 55 4 44E 07 5 55E 08 0 4 07E 07 MSR220VA 52 years 4 26E 07 55 4 52E 07 6 10E 08 0 4 26E 07 Type Proof test interval T1 1year 3 years 5 years 10 years MS220VA PFDavg 1 78E 03 5 35E 03 8 91E 03 1 78E 02 MSR220VA PFDavg 1 87E 03 5 60E 03 9 33E 03 1 87E 02 Observe proof test interval according EN 60079 17 for electrical equipmen...

Page 10: ...ction released by the protection device must transfer the machine after manipulation of this function as fast as possible into a safe condition The stop function must have top priority In case of failure the relay switches off the contactor circuit breaker and so prevents an overheating of the isolation system and or the surface temperature The protective function of the equipment is guaranteed on...

Page 11: ...e at terminals T1 T2 The short circuit monitoring function must be tested by bridging the thermistor circuit wires at terminals T1 T2 The safety function must be tested by changing the resistance from 1500 Ohm to 4000 Ohm at terminals T1 T2 The function of the electronic interlock must be tested additionally If an error is detected no restart must be induced until the error is cleared 17 Maintenan...

Page 12: ... basic requirements and complies with the following directives of the European Union 2014 35 EU Niederspannungsrichtlinie Low Voltage Directive 2014 30 EU EMV Richtlinie EMC Directive 2014 34 EU ATEX Richtlinie ATEX Directive 2011 65 EU RoHS Richtlinie 2015 863 EU RoHS Directive Angewandte harmonisierte Normen und technischen Spezifikationen Applied harmonised standards and technical specification...

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