PTC-relay for the monitoring of dry transformers. Alarm 1 with relay in closedcircuit current mode for preliminary warning, releases at over-temperature at PTC-set 1 and serves at the same time as functional monitoring. Alarm 2 in operating current mode. Thus no wiping signal occurs when switching on the supply voltage on. Additional terminals enable comfortable wiring from supply voltage to relays K1 and/or K2.Changes from T221717 / T221718 to T228143 / T228144: Version with spring terminals RoHS/REACH compliantFurther information can be found in our customer information: "New terminals for K-type devices"Changes from T221715 / T221716 to T221717 / T221718: cURus, monitoring of sensors for short circuit an interrupt activatable, improved test functionFunctions2 PTC resistor sets2 output relays 1 change-over contact (co)/ 1 normally open contact (no)monitoring of sensors for short-circuit and break activatableTEST-button (delayed)LEDs for ON, alarm 1 and 2red LEDs for alarm 1 and alarm 2K-type housingHousing for mounting on DIN-rail 35 mm or wall-mount with screws M4Replacement for foreign device Elbag/Joppich TS-01 

The STWA1SEH is used where current flow has to be detected, e.g. to report exceeding of a limit, to switch off a machine or just report the current flow. The STWA1SEH has an integrated electronics with transistor-output. The limit is adjustable 2 - 10 A with a potentiometer. A LED displays the state.adjustable switching point 2-10 Abuilt-in LED displays state of the outputisolated transistor-output max. DC 40 V / 40 mAoutput van be directly connected to a digital input of a PLCintegrated diode for reverse voltage protectionelectrival connection via screwless pluggable terminals2-wire, no supply voltage requiredDIN-rail-mount or with screwsplug-in current transformer (Ø 11 mm)max. overload 100 A continuously, 300 A max. 10 s.

The grid- and plant protection device UFR1001E monitors voltage and frequency in plants for owngeneration of electricity. It complies with the requirements of VDE-AR-N 4120:2018-11, VDE-AR-N 4110:2018-11, VDE-AR-N 4105:2018-11, G98 and G99, ÖVE/ÖNORM E 8001-4-712:2009 and other standards for generators connected to the public grid.The UFR1001E is a dual-channel device and thus one-fault-proof. The function of the output-relays and of the connected switches can be monitored with feed-back contacts. When a connected switch does not switch off, the UFR does not switch on again. When a switch does not switch on it makes 2 restarts and thus improves availability of monitored plant.The limits are pre-set according to VDE-AR-N 4105-2011-08, VDE-AR-N 4105:2018-11 and other standards. They can be changed if required and be protected with a code and/or a seal.With a 2-step test both channels can be tested individually and the triggering time of connected switches is measured.The standby input allows a remote shutoff e.g. with a RCR.NEW: Our UFR1002IPWould you like to measure upt o 1,200 V?You need an interface (Modbus TCP)?You want a plain text LCD display?You need a seperate life contact?Then Take a look at the new UFR1002IP! 

The STWA1 current transformer is made to match the STW current monitor. One current transformer is required for each line being monitored. The STWA1 consists of a climate-proven sealed-in coil with toroidal tape core. The connection cables are permanently fixed to the transformer and are 1 m in length. The level of the current to be monitored is limited to 100 A continously, 300 A for max. 10s.In case of current of more than approx. 5 A, an LED can be triggered directly via the STWA 1 current transformer. Thus it's easy for users to visually monitor the current conduction in a line. The LED is protected by an anti-parallel diode or by its connection in series. A protective resistor is necessary depending on the LED used or the level of current being monitored.Weight: approx. 43 g

PTC-relay for the application as a protection device against inadmissible heating up at electrical equipment in areas with explosive gases (zones 1 and 2) and areas with combustible dust (21 and 22), e.g. for direct temperature-monitoring of explosion-proof motors EEx e and EEx d. Vertically arranged terminals. Each terminal remains accessible even if all others are already occupied.Changes from T222471 to T228130: Version with spring terminals RoHS/REACH compliantChanges from T222476 to T228138: Version with spring terminals RoHS/REACH compliantFurther information can be found in our customer information: "New terminals for K-type devices"FeaturesATEX approval according to directive 2014/34/EUSIL 1 according to IEC 61508PL c according to ISO 138491 PTC-resistor (thermistor) set, each 3 or 6 PTC-sensorsshort-circuit monitoring of sensor-circuitoutput-relay with 1 or 2 change-over contacts (co)electronic reclosing lock (disconnectable)integrated RESET-buttonlink for external resetautomatic reset at voltage recoveryRESET-Button with integrated LEDs for power-ON (green) and ALARM (red)K-housing, vertically arranged terminals housing 22.5 mm wideassembly on DIN-rail or with 2 screws M4 (option)UL Recognized ComponentOption: other supply voltages 

Relay for Energy Flow, optimization of self-consumption of self generated energy. Zero Export Device.The successor model to our popular EFR4001IP: Relays for energy flow measurement type EFR4002IP monitor the current flow between public power grid and generating plant / consumer. Operation is made comfortably via integrated webserver or directly at the device. Measured values are displayed neatly arranged at device on monitor. When the own power plant generates more power than actually is consumed it often is more economical to consume the excess energy self. This is especially reasonable when the difference is high between the price you pay to the grid provider and the price the provider pays for fed in energy.Many areas suitable for photovoltaics could not be used so far, since only a limited amount of power can be fed in at the grid connection point. In Germany new standards VDE-AR-N 4105:2018-11 allow exceeding this value by up to 66.6% or more installed capacity. The prerequisite for this is that the overbuilt power is consumed and not fed into the grid. In order to still ensure the stability of the system, this can be monitored with EFR4002IP. The same applies to zero export, when no energy at all may be fed into the grid. In this case, the device can be used as an energy flow direction sensor (EnFluRi). The EFR4002IP has been optimized for these functions.Data exchange with PPC (Power Plant Controller) possible.Functions:Switching of up to 3 consumers: the largest consumer, ranked 1-2-3 or combination of 3 consumers (7 levels)Switch on and off points. At which energy flow consumers are switched on and off againSwitch on and off delay of consumers, minimum on time.Control of heat pumps (SG-ready), battery chargers, invertersFor the use of Rogowski coils, please have a look at our EFR4002IPRNEW:Can be used for medium-voltage applications Connection of earthed medium-voltage transformers and series connected measuring devicesFor the German regulation "NELEV" and "EAAV"Suitable current transformers:Current transormers scaleable up to 2.400 A, secondary 1 A or 5 A (for Pav,e min. class 1) for example ZIEHL Type AS or WSCompact CTM7, 64/1 A, Kl. 1, 0,5 VAAccessory:Front Mounting Kit ER8 for mounting in control panels or doors

The MSF 220 V is particularly suitable for the temperature monitoring at dry transformers. 3 PTC-circuits with different nominal response temperatures (NRT) can be connected to this unit, one for controlling a fan (forced cooling) and two for alarms. Each PTC-circuit is monitored for break and short circuit. This reduces the probability of false alarms.3 PTC-circuitsMSF 220 VU for universal supply voltage AC/DC 24-240 Vintelligent control of fan (relay K0, 1 normally-open contact)ALARM 1 in closed-circuit current mode (relay K1, 1 change-over contact) for pre alarm. Signals also error in any sensor and interruption of supply voltage. ALARM 2 in operation current mode (relay K2, 1 changeover contact). No signal when switching on and off the supply voltage.all output relays potentially separated from each other.monitoring of sensor linesTEST-button (stop possible before ALARM 2)Simple testing with disconnectable monitoring of break and short circuit  (for 10 minutes).LEDs for ON, sensor error, Fan, ALARM 1 and ALARM 2UL recognized componentplug-in terminalshousing for mounting on DIN-rail or wall-mountmounting height 55 mmAccessory: Installation Frame ER4 for panel mount 

NEW: For the German regulation "NELEV" and "EAAV"The grid decoupling relay UFR1002IP is the "big brother" of the UFR1001E and monitors voltage and frequency in three-phase and AC grids.With a color LCD display (German/English) and joystick, it is even easier to operate than the UFR1001E. Measured values and settings are clearly displayed. The device can be programmed, updates installed and the alarm memory read out via the integrated IP interface. The real-time clock (with power reserve) simplifies the traceability of the alarms. Up to 1,200 V can be monitored in conjunction with the VG1200 coupling device. The device has a two-channel, single-fault-safe design and thus meets the requirements of VDE-AR-N 4105:2018-11. The function of the connected switch is monitored. If monitoring is activated, the device does not switch on again if a switch-off error is detected.Limit values for different applications are preset. Where permitted, they can easily be changed. If the nominal voltage is changed, the device automatically adjusts the limit values. With the standby input, a remote shutdown can be implemented, e.g. with a ripple control receiver.Monitoring ofUnder/over voltage 15-520V (with ZIEHL VG1200 coupling device up to 1,200 V)Under/over frequency 45-65 HzVoltage quality (10-minute average)Vector shift 2-65°ROCOF, rate of change of frequency df/dt 0.100...5.000 Hz/sZero voltage U0 (ANSI 59v0)passive anti islanding protectionFeatures:single-fault-proof, with monitoring of connected switch (can be switched off when using the integrated switch of PV and battery convertersProgrammable restart attempts in the event of a switch-on error in the connected switchRelay K3 with programmable functions, including life contact, delayed switch-on signal for switches or error messagesResponse time adjustable 0.05 … 300,0 sSwitch-back time adjustable 0 … 6,000 sPreset according to VDE-AR-N 4105-2018-11 (Pr 1.02, Pr 1.08 + 1.09) and VDE-AR-N 4105-2011-08 (Pr 1.01)Preset according to VDE-AR-N 4110-2018-11 (Pr 1.11-1.14) and bdew guideline (Pr 1.03-1.06)automatic adjustment of the switching points when the nominal voltage is changedAlarm counter for 100 alarms (with trigger value, cause and date/time, time of restart)3 programmable digital inputsStandby counter and timer with standby on/off date/timeTest and simulation function with measurement of switch-off timesSealing option and code protection for settingsInterface ethernet TCP/IP, values available via modbus TCPSimple commissioning and programming thanks to preset basic programs and transmission via IP interfaceSupply voltage AC/DC 24-270 VHousing for DIN-rail-mount, 105 mm wide, mounting height 66 mmAccessory: Installation frame ER6 for panel mount

Temperature-Relays TR111V can be used as limit-switches or 2-point controllers with high repeat accuracy. 3 measuring-ranges, adjustable hysteresis and switching delay and the choice between operating- and closed-current principle of the relay make it a very universal device. Application: Protection from over-temperature in processes, plants and machines. Monitoring of temperatures in bearings. Controlling of temperatures in processes and plants.Overview of FunctionsMeasuring input 1x Pt 100 (RTD)/ 3-wireMeasuring ranges selectable:– -10...+40/ 0...100/ 0...200 °C– 0...100/ 0...200/ 200...300/ 300...400 °C1 limit adjustable 0...100 %switching delay adjustable 0,1...10 sOutput-relay 1 changeover-contact (co)Operating- or closed-current-mode selectable with bridgeSwitching off at sensor-shortcircuit or breakLEDs for display state of relayHousing for mounting in switchgear cabinets or fuseboxes, 35 mm wideMounting heigt 55 mmUniversal supply-voltage AC/DC 24-240 V 

PTC-relay for the application as a protection device against inadmissible heating up at electrical equipment in areas with explosive gases (zones 1 and 2) and areas with combustible dust (21 and 22), e.g. for direct temperature-monitoring of explosion-proof motors EEx e and EEx d. Vertically arranged terminals. Each terminal remains accessible even if all others are already occupied.Changes from T222451 to T228114; T222445 to T228116: Version with spring terminals RoHS/REACH compliantFurther information can be found in our customer information: "New terminals for K-type devices"FeaturesATEX directive 2014/34/EUSIL 1 according to IEC 61508PL c according to ISO 138491 PTC-resistor (thermistor) set, each 3 or 6 PTC-sensorsshort-circuit monitoring of sensor-circuitoutput-relay with 1 or 2 change-over contacts (co)2 LEDs for ON and ALARMK-housing, vertically arranged terminals housing 22.5 mm wideassembly on DIN-rail or with 2 screws M4 (option)UL Recognized ComponentOption: other supply voltages 

Universal-measuring-transducers MU1000K can measure signals Pt100 (RTD) and DC current (0/4-20 mA) and voltage (DC 0/2-10 V). Several measuring-ranges are pre-programmed. More can be easily scaled. Temperatures at sensors Pt 100 can be evaluated from -200 °C to + 800 °.The output-signals 0/2-10 V and 0/4-20 mA are potentially separated from inputs and supply voltage. With its universal power-supply AC/DC 24-240 V the measuring transducer can be connected to all common supply-voltages.Overview of functionsCurrent input 0-20mA, scalableVoltage input 0-10V, scalableInput Pt 100, 3-wire, -200…+800 °C, scalableOutput signal 0-20mA and 0-10V or 4-20mA and 2-10VRated Supply Voltage AC/DC 24-240VInsulation between inputs, outputs and supply voltageStandard ranges adjustable, universally scalable input ranges

Measuring transducers MU2000K can measure DC- an AC-voltages up to 600 V and DC- and AC-currents 0-1/5 A.Preset measuring ranges can be selected. More measuring ranges (zero and full-scale) can be easily scaled. The output signals DC 0/2-10 V and 0/4-20 mA are insulated from measuring input and supply voltage. With its universal supply voltage AC/DC 24-240 V the measuring transducer can be connected to all common supply voltages.The MU2000K e.g. is suitable for measuring DC voltages and charging currents at batteries or for measuring AC voltages and currents in plants for own generation of energy.Changes from T236053 to T236056: Version with spring terminals RoHS/REACH compliantFurther information can be found in our customer information: "New terminals for K-type devices"Overview of functionsOutput signal 0-20mA and 0-10V or 4-20mA and 2-10VRated Supply Voltage AC/DC 24-240VInsulation between inputs, outputs and supply voltageInputsAC/DC 0 … 600 V (preset values: 0…30 V / 80…120 V / 0…150 V / 0…300 V / 0…600 V)AC/DC 0 … 5 A (preset values: 0…1 A / 0…5 A)In measuring ranges for AC also DC-signals can be measured. Negative signals will be measured as positive signals.Zeros and Full Scales for more measuring-ranges can be freely selected by the user.

The FRMU1000 is a speed-monitor, a frequency-monitor and a measuring-transducer in one device.2 limits with 1 relay each can be programmed for under- or overspeed, under- or overfrequency or each monitoring of a range (min/max).The input for monitoring of speed can evaluate signals from proximity-sensors 2- or 3-wire, npn- or pnp. The display can be scaled. Thus the real speed of a shaft can be displayed, even though there are several pulses per revolution, e.g. from a cogwheel.Application as Frequency-RelayMonitoring of frequencies in mains 16 2/3 to 400 Hz on maintaining a range (min/max).Application as Speed-RelayMonitoring of overspeed or underspeed, each with pre-alarm and alarm, monitoring of maintaining a range (min/max) or monitoring of stop at machines and equipment, e.g. at conveyors, escalators or lifts or for monitoring of drive-belts.Applications as Measuring Transducer (FRMU only)In addition, the FRMU can be used as measuring-transducer to convert the input-signal into a standard-signal 0/4-20 mA or 0-10 V. 

The Pt100 thermostat TR250 monitors up to 3 sensors Pt100 (RTD), Pt1000, KTY83 KTY84 or thermistors (PTC) at the same time. Different types of sensors, e.g. Pt 100 and PTC can be monitored simultaneously.The unit is especially suitable for monitoring motors, generators and transformers.An other application is the use as a 2- or 3-step-controller with additional monitoring of over- or under-temperature. monitoring of differences in temperatures of 2 sensors  or  temperature controller for heat pumps. FunctionMeasuring an dmonitoring range -199...+850 °CResolution 0.1 °C for measuring range –19.9...99.9 selectable3 relay-outputs K1 to K3 with change-over-contactsUniversal power-supply AC/DC 24-240 VEasy settingStoring of values of MIN- and MAX temperatureAlarm counter for 3x99 alarms with display of sensor and elapsed timeCode-lock against manipulation of settingsReplacement for Elbag/Joppich TS-023 Sensor inputs: Pt 100 (RTD) or Pt 1000, 2- or 3-wire-connection, KTY83, KTY84Thermistors (PTC) each 1...6 in seriesMonitoring of short-circuit and breakDisplays:3 digit 7 segment display for temperature and programming3 LEDs for sensors, for alarms/relaysdisplay °C or °F selectable, resolution 0.1 °CSwitching functions:3 relayswarmest/coldest sensor switches relay3 LEDs for alarm/relayprogrammable for every relay:hysteresisautoreset or electronic reclosing lockdelay time for switching and switching backoperating- or closed current-modecyclic check of functionmonitoring of difference in temperature6 preset programs:Motor /generator 3x Pt 100transformer with 3x Pt 100transformer with 2x PTC and 1x Pt 100transformer with 2x PTC / 3x PTC3 x 1 alarm per sensorAccessory: Front mounting kit type ER4Alternative: Temperature relay Type TR640IP

The PTC-resistor trip device MSF220SE monitors the winding temperature of machines and equipment. Signals, that can be used as ”early warning" or ”malfunction" (switching-off), are transmitted as soon as the admissible limit temperature is exceeded.Two PTC-circuits can be connected to this unit. The integrated rise-delay time ensures a reliable mains voltage build-up.Function2 PTC resistor circuits, 1 to 6 PTC each (max. cold resistance of circuit 1500O each)potential-free contact for alarm 1potential-free contact for alarm 2voltage of pin 3 is connectet to pin 1 with a time delay of 2 sec., replacing an additional timing relay.alarm 3 for check of relay K3LED´s signal state of relays K1 and K2relay K3 picks up time-delayedTEST-button for ALARM 1 and ALARM 2NoteThanks to the delayed switching-on of the error message (approx. 2 s) after the switching-on, this device is especially suitable where an auxiliary voltage is not available and the secondary voltage of the monitored transformer is being used. The MSF220SE can furthermore be used advantageously when combining it with operating current releases. For additional devices, the control voltage is available at terminal 1 time-delayed. In case of a breakdown of the supply voltage, the control voltage is available at terminal 7 and can be used as a message. (Attention! This message will also be given for approx. 2 s. after switching-on.)Functional descriptionPTC-circuits in closed-circuit current principle. When the closed-circuit current flows, both output relays K1, K2 are picked up. Approx. 2 sec. after switching on supply power, relay K3 picks up time-delayed, closing the contact circuits at terminals 31, 14 and 31, 24. As soon as the temperature of the early warning has been reached, relay K1 releases (terminal 31, 12 closed), the alarm 1 is given. If the temperature of malfunction is reached, also relay K2 releases (terminal 31, 22 closed). This alarm 2 can be used to switch off the equipment. If the temperature drops to approx. 5 °C below the temperature of malfunction or early warning, the relays K1 and K2 resp. are switched on again.TEST: LED "ON" – flash -> +2 s -> Alarm 1 -> +3 s -> Alarm 2 

The automatic start-up system for woodworking machines is a control unit that has been specially developed for the efficient control of extraction systems. Its main function is to monitor the current flow in the supply lines of several machines and to control the extraction system accordingly. Detailed description of the functionality:Current detection: The automatic start-up system is equipped with current relays that monitor the current flow in the supply lines of the machines. These relays are configured in an OR circuit with up to eight inputs. As soon as a current of more than 1 ampere flows through one of the connected current transformers, the built-in relay picks up and activates the extraction system.Automatic control: If at least one machine is switched on and draws current, the extraction system is activated automatically. This ensures that dust and chips are extracted immediately, keeping the working environment clean and safe.Delayed switch-off: As soon as all machines are switched off and no more electricity is flowing, the relay drops out with a delay of around 10 seconds. This delay time allows the extraction system to remove any remaining particles from the air before it is switched off. Typical application: In a joinery that operates several woodworking machines such as saws, planers and routers, the automatic start-up system is installed centrally in the control cabinet. The current transformers are connected to the supply lines of the individual machines. When the carpenter switches on a machine, the automatic start-up system detects the current flow and activates the central extraction system. This ensures that dust and chips produced during woodworking are extracted immediately. As soon as the work is finished and all machines are switched off, the extraction system remains active for a short time to remove the remaining particles before it switches off automatically. This automation not only improves the efficiency of the extraction system, but also contributes to safety and cleanliness in the workplace.8 inputsOR-evaluationrelay picks up if at least 1 input is activatedConnection of current transformers STWA1 or STWA1Hoperating value approx. 1 Aturn-off delay approx. 10 snot necessary inputs remain open  Change S225636 -> S227400: Our alternative for the STW1K AC220-240V (S225636) is the new STW1K with wide-range power supply unit AC/DC 24-270V (S227400). Version with spring-loaded terminals RoHS/REACH-compliant. Further information can be found in our customer information: “New terminals for type K devices”. The S227400 is an alternative with minor deviations.If you have any questions, please contact our sales department: +49 791 504-103, verkauf@ziehl.de

ZIEHL current-relays STW1000V2 monitor standardsignals from measuring transducers if a limit is exceeded. For monitoring of more than 1 signal, multiple relays can be connected in series (current) or in parallel (voltage). Measuring inputs for 0/4-20 mA and 0-10 V, adjustable hysteresis and switching delay and the choice between operating- and closed-current mode of the relay make it a very universal limit switch.ApplicationsMonitoring of different values in combination with measuring transducers, e.g. in machines and controls.Measuring inputs 0-20 mA / 0-10 V, switchable to 4-20 mA / 2-10 VLimit adjustable 0-100 %Hysteresis adjustable 5-30 %Start-up delay adjustable 0,1 ... 10 sSwitching delay adjustable 0,1 ... 10 sOutput-relay 1 changeovercontact (co)Operating- or closed-circuitmode for relay selectable with bridgeLEDs for display state of operationUniversal supply-voltage AC/DC 24-240 VHousing for mounting in switchgear cabinets or fuseboxes, 35 mm wide

The basic function of the device is to detect whether a current is flowing in the supply line of one of several woodworking machines. If a current flow is detected, the device opens a valve on the machine's suction channel. At the same time, the extraction system is switched on. When a machine is switched off, the device closes the associated valve with a delay. If the last machine is switched off, the extraction system also stops after a delay.The current relay STW81V is an 8-channel AC current relay, designed for controlling of suction plants e.g. in the timber and plastics processing industry. When there is an AC-current >1A through one of up to 8 connected transformers type STWA1, the appropriate relay K1...K8 (1 x co) picks up and opens the slide valve of the machine. At the same time the relay K9 starts the central suction.Relays K1...K8 switch off 10s after the current flow through the appropriate transformer is 0. K9 switches off 0...60s (adjustable) after the current in all transformers is 0.ApplicationThe current relay STW81V is particularly suitable for the central control of slide valves in suction plants, which are to be operated dependent on operating condition of individual machines. It can control a central suction at the same time.single evaluation of 8 inputs with STWA1single evaluation of 8 inputs with current-sensor S1inputs for 8 potential-free contactsOR-evaluation of all circuits (K9)9 output relaysLED display for relays / inputsSwitching point adjustable 0,5 - 5 Aswitch-off delay of K9 adjustable 0 - 60 secondsswitch-off delay single relays 10 slast relay: K9 + 20 s

The STWA1S has an integrated electronic with transistor-output. The switching point is 2 A. Above app. 2 A the output transistor is switched on (LOW), below app. 1.5 A it is off (HIGH). The conductor is simply pushed through the transformer.Multiple loops reduce the switching point correspondingly, for instance to 0.5 A with four loops. A supply voltage is not required.ApplicationThe STWA1S is used where current flow is to be detected, with the exact value of the current either known from the power consumption of the connected consumer or does not matter for the evaluation.For simultaneous evaluation of the current flow in several conductors the STWA1S device can be connected in series (AND circuit, pay attention to the voltage drop) or in parallel (OR circuit, pay attention to the leak current).isolated transistor-output max. DC 40 V/40 mAoutput can be directly connected to the digital input of a PLCintegrated diode for reverse voltage protection2-wire-connection, 1 mno supply voltage requiredtransformer and electronic unit enapsulated in a climate-proof housingplug-in current transformer (Ø 11 mm)max. overload 100 A continously, 300 A / 10 s

The measuring point multiplicator TMU104V measures the temperature at a connected sensor and transduces it into 4 insulated signals Pt100 (RTD). Via interface RS485 it can be used as a simulator for up to 4 signals Pt100.Overview of functionsMeasuring input Pt100 (RTD), Pt1000, KTY83 / 84 in 2- or 3-wireMeasuring input thermocouple (types B, E, J, K, L, N, R, S, T)Measuring range -199…+850 °C4 insulated outputs signal Pt 100 (resistance- signal), connection in 2-, 3- or 4-wireDigital display, 3 digits, resolution 1 °C (-19.9 … 99.9 °C: resolution 0,1 °C)Storing of MIN- and MAX- valuesUniversal supply voltage AC/DC 24-240 VInterface RS485 (protocols ZIEHL and Modbus RTU)Housing for DIN-rail or wall-mount, 105 mm wide, mounting height 55 mmMeasuring Point Multiplicator and TransducerThe temperature of the sensor (resistance or thermocouple), connected to the input, is available as signal Pt100 (RTD) at 4 insulated outputs.Thus allows the connection of other sensors than Pt100 to inputs for Pt100 at other devices.Normally only one input can be connected to a temperature sensor. With help of TMU104 up to 4 devices (controls, displays, monitoring devices) with inputs Pt100 can be connected to one sensor at the same time.Simulator for Pt100Controlled via interface RS485 (protocol Modbus RTU) the TMU1004V can simulate up to 4 sensors Pt 00 (RTD). This allows the application in equipment, that makes automatic tests and calibrations at devices and installations with several inputs Pt100.

ZIEHL PTC-resistor relays protect motors, transformers, machines and equipment against thermal overload. With ZIEHL PTC Sensors MINIKA ® applied they offer best solutions for nominal response temperatures 60°C…180°C.ZIEHL PTC-resistor relays are designed for PTC-sensors according to DIN 44081 and DIN 44082. Therefor sensor and relays are exchangeable. PTC-resistor sensors are suitable for the installation into windings of electrical machines, bearings and transformers as well as to monitor the temperature of liquid media, airflow and gases.Used in conjunction, they provide a effectively and reliable protection in case ofblocking rotors, heavy starts, countercurrent operationundervoltage and phase failureincreased ambient temperature and hindered coolingThe MS220K2 monitors 2 PTC resistor sets at the same time. If a temperature rise occurs in one set, the appropriate output relay releases. With this relay, 2 PTC-sets can be independently monitored. Functional overview2 PTC-resistor sets, each 1...6 PTC resistors, or bimetal contactsoutput relays 2 x 1 change-over contact (co)LEDs for operation and alarmUL-Recognized Component 

The Universal-Instrument MINIPAN 352V is a versatile instrument for industrial applications. It is particularly characterized by its limit value and control functions, which are realized by two programmable switching points. These allow it to be used as a limit relay or as a 2- or 3-point controller. The innovative EasyLimit function considerably simplifies the setting of limit values and at the same time protects other parameters from unintentional changes.   The device has a wide range of measurement inputs, including AC measurements with true RMS measurement, which makes it particularly suitable for precise AC measurements. Both AC and DC current and voltage, resistances and temperatures can be measured with various sensors. The 4-digit LED display with 14 mm high digits is freely scalable from -1999 to +9999, allowing the measured values to be displayed individually.   In addition, the MINIPAN 352V offers an optional analog output (4-20 mA), which makes it suitable for use as a measuring transducer. The universal supply voltage of AC/DC 24-240 V increases flexibility in use. With its compact design and simple programming via three buttons, the device is ideal for a wide range of measurement tasks in industry.   Application: MINIPAN352V are often installed in heating, ventilation and air conditioning systems, where they provide a simple and effective way of keeping temperatures within a certain range.

The MSF220VL is particularly suitable for monitoring of temperatures at dry transformers, when also the temperature of the core shall be measured. Monitoring of core temperature is especially required in rectifier transformers because of harmonics causing heat in the core.An intelligent control prolongs automatically the runtime of a cooling-fan, depending on the load of the transformer. Each PTC-circuit is monitored for break and short circuit. This reduces probability of false alarms. Relays in operating-current mode prevent from a trip-signal when switching on supply voltage.The device can be adapted to different applications with 4 programs:Fan-control - alarm - trip (winding) - trip (core)Alarm - trip (winding) - trip (core) - alarm (fault)Fan-control - alarm - trip (winding) - alarm (fault)Fan-control with hysteresis T1/T2 - alarm – trip (winding) - time relayOverview of functions4 inputs for PTCIntelligent control of fanAutomatic fan-test 1x / weekelectronic reclosing lock for alarms (trip) connectableMonitoring of sensorsTest-buttonSimple testing with disconnectable monitoring of break and short circuit (for 10 minutes)cURusLEDs for alarms, states of relays and sensorsHousing for mounting on DIN-Rail or wall-mount(option)Mounting height 55 mmUniversal supply voltage AC/DC 24-240 VDEWA-standard for DubaiAccessory: Front mounting kit type ER4

Phase-Sequence-Change Relays DRR20 measure the sequence of the phases and switch – if necessary the rotation of the field. At the output (connect relays K1 and K2 in series in this application) two contactors are connected. The contactor at the normally-open contact of K2 switches the phases 1:1without changing them, the second (atnormally-closed contact) changes 2 phases.When switching on with phasesequence ok, relay K2 picks up. With wrong phase-sequence it remains released. After K2 has switched, K1 picks up. K1 also releases first. This makes sure, that no wrong contactor can be picked up under any condition. Additionally the DRR20 monitors the three phases for asymmetry and undervoltage. If the limits are exceeded, the K1 switches off (respectively doesn't pick up) and protects the connected motor from damage. The device can also be used as a monitor for undervoltage, asymmetry or phase-sequence.Applications are machines and equipment that is operated at variable locations, e.g. at building sites. Pumps, compressors and vacuum-cleaners alwaysrun correctly and they are protected from damage by undervoltage or asymmetry.automatic change of wrong phase-sequence when connected falsely (2 contactors afforded)running backward of motors is avoidedno switching on at asymmetry or undervoltagerelay K2 picks up when phase-sequence is correctrelay K1 picks up (after K2) when symmetry and voltage is correct3 LEDs for state of relays and errorsmeasuring-voltage 3 AC 400 Vlimit asymmetry adjustable 5…25 %limit undervoltage adjustable 70…95 %alarm-delay adjustable 0,1…10 s (undervoltage and asymmetry)no supply-voltage required