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MS220Vi and MSR220Vi  

11910-0701-01

  

Page

 

3 / 12 

www.ziehl.de 

  

Display and control elements  

MS220Vi

 

MSR220Vi

 

without electronic reclosing lock 

with electronic reclosing lock (disconnectible) 

Alarm (red) ON (green) 

Alarm (red) ON (green) 

build in key „reset“ (blue) 

 

   

 

 

 

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 temperatures 
arise related to TNF (detector operating temperature): 
 
 

Tripping temperature 

Reset temperature 

1 PTC thermistor 

TNF + 15 K 

TNF + 5 K 

3 PTC thermistors in series 

TNF + 5 K 

TNF 

– 5 K 

6 PTC thermistors in series 

TNF 

TNF 

– 20 K 

 
 

Application and brief description 

Ziehl PTC thermistor relays protect motors, transformers, machines and equipment against thermal overload. 
Used in conjunction with respective PTC thermistors they provide a reliable temperature protection in the 
temperature range 60 °C up to 180 °C. 
 
ZIEHL PTC thermistor relays are conform to EN 60947-8. PTC-thermistors according DIN 44081 and DIN 
44082 shall be connected. PTC thermistors are suitable for the installation into windings of electrical 
machines, bearings and transformers as well as to monitor the temperature of coolant, airflow and gases. 
 

II (1) G [Ex ia Ga] IIC 
II (1) D [Ex ia Da] IIIC

 

 
TMP tripping devices MS 220 Vi und MSR 220 Vi are build as associated electrical equipment with type of 
protection intrinsic safety "i". All functions in the TMP tripping device serve to protect non-explosive-protected 
equipment and explosive-protected equipment in regular operation and in case of failure. The devices monitor 
electrical apparatus for explosive gas atmospheres (Zone 0, 1 und 2) and electrical apparatus for use in the 
presence of combustible dust (Zone 20, 21 and 22). Installation only in safe area. 
To limit the maximum surface temperatures, TMP tripping relay must be installed according to the requirements 
and documentation. The power supply must be switched off either directly or indirectly. Reset should admissible 
by hand only. 
 

 

Summary of Contents for MS220Vi

Page 1: ...0Vi updated 2019 02 28 Su MS220Vi and MSR220Vi 11910 0701 01 Page 1 12 www ziehl de ZIEHL industrie elektronik GmbH Co KG Daimlerstr 13 74523 Schwaebisch Hall Germany 49 791 504 0 info ziehl de www ziehl de PTC Thermistor Relay TMP tripping device with circuit for temperature sensors in ignition protection type ex i marking see type plate EC type examination certificate PTB 07 ATEX 2055 ...

Page 2: ...oting and remedies 6 12 Technical Data 7 13 Dimensions Design V4 9 14 Safety Instructions and references for putting into operation 9 14 1 Special remarks for explosive gas atmospheres areas Zone 0 Zone 1 and Zone 2 9 14 2 Special remarks for use in the presence of combustible dust Zone 20 Zone 21 and Zone 22 9 14 3 Wiring 10 14 4 Safe Separation 10 14 5 Stop function 10 14 6 Start and Restart 10 ...

Page 3: ...perature protection in the temperature range 60 C up to 180 C ZIEHL PTC thermistor relays are conform to EN 60947 8 PTC thermistors according DIN 44081 and DIN 44082 shall be connected PTC thermistors are suitable for the installation into windings of electrical machines bearings and transformers as well as to monitor the temperature of coolant airflow and gases II 1 G Ex ia Ga IIC II 1 D Ex ia Da...

Page 4: ...and contacts 11 12 and 21 22 close The devices also switch off in the case of sensor or line short circuit approx 20Ω or sensor or line interruption MS types switch on automatically when the temperature has decreased approx 5 C MSR types with electronic reclosing lock store shutdown and require a RESET push built in button or external with terminals Y1 Y2 closed or by return of supply voltage Stor...

Page 5: ...ath or serious injury Turn off and lock out all power supplying this device before working on this device 8 Installation The applicant must observe safety rules and standards Notice safety remarks The device can be mounted on 35 mm rail according EN 60715 or with screws M4 Option Housing design V4 wide 70 mm 4 TE The devices must be installed in a closed switchgear cabinet or in an enclosure of in...

Page 6: ...14 and 21 24 close The correct function of the tripping device must be checked by resistance simulation at terminals T1 and T2 This check is also performed after changes to the installation 10 Operating instructions MSR220Vi devices have an built in reset button and can be manually reseted after a fault signal Red alarm Alternately also an external button remote reset terminal Y1 Y2 can be used 11...

Page 7: ...erature TFS 60 C 180 C Response tolerance TFS 6 C Collective resistance cold thermistor 1 65 kΩ Terminal voltage 2 5 V at R 3 65 kΩ 2 V at R 1 65 kΩ 8 61 V at R Terminal current 1 mA Power consumption 2 mW Line capacity max 0 2 µF Temperature monitor cut out point 3 3 kΩ 3 65 kΩ 3 85 kΩ Temperature monitor reclosing point 1 7 kΩ 1 8 kΩ 1 95 kΩ Short circuit monitor cut out point 20 Ω Short circuit...

Page 8: ... Fire protction class UL 94 V 2 Protection class housing EN 60529 IP 30 Mounting EN 60715 Standard rail 35 mm Optional Screw mounting M4 only with additional bar not included Weight approx 180 g Conecction terminals Screw mounting M3 Protection class EN 60529 IP 20 Torque 0 5 Nm 3 6 lb in Line connection solid wire Stranded wire with insulated ferrules Insulation strip length min 1 x 0 50 2 5 mm2 ...

Page 9: ...ersonnel only Inappropriate behavior can cause heavy personal damage and damages to property The relay may be installed only outside potentially explosive atmospheres Within potentially explosive atmospheres the equipment is to be provided with a pressurized enclosure according EN 60079 2 14 2 Special remarks for use in the presence of combustible dust Zone 20 Zone 21 and Zone 22 The increased dan...

Page 10: ...DIN VDE 0551 safety transformer or battery power and when protected wiring is used Caution Supply voltage AC 24 V must not be grounded to earth PA 14 5 Stop function A stop function 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 o...

Page 11: ...be tested by interrupt of the sensor line at terminals T1 or T2 The short circuit monitoring function has to be tested by bridging the sensor line at terminals T1 and T2 Trip relay MSR the function of the electronic interlock has to be tested additionally If an error is detected no restart must be induced until the error is cleared The response of the thermal motor protection must directly switch ...

Page 12: ...sic 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 specifications E...

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