STR100 ZIEHL | Alldatasheet

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ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de The safety temperature limiting de- vice STR100 detects the resistance of a Pt100-sensor connected to the input. This is linearized and evalu- ated in 2 separated channels. If the measured temperature is smaller than the limit value adjusted, both output relays are picked up. To do this, a reset has to be made after switching on the supply voltage (close contact between terminals 3+4). The relays are wired in such a way to have the function of a change-over switch to the outside. The load circuit is only closed when both relays are picked up. If a malfunction occurs or if the limit value is exceeded, both relays are released and the load circuit is separated. The released relays K1 and K2 are indicated by the lighting up of the red LEDs. When the limit value is exceeded, a third relay picks up which is used for error indication. Interruption of the sensor or short- circuit are signaled by a red LED each and also lead to disconnection of both channels. Only when the temperature has fallen below the response value by the switching hysteresis of about 10°C and no malfunction occurs, it is possible for the STR 100 to close the load circuit after actuating the reset key. Readiness for switching on is displayed by the third relay and a LED. An incorporated safety fuse avoids welding of the relay contacts. Safety temperature limiting device meets safety category 3 (SK 3) as per DIN EN 954-1 SIL2 according to IEC61508 Connection for Pt 100 sensors as per EN 60751/IEC 60751 can be delivered with measuring-range between -200 and +700 °C 2-channel evaluation Sensor monitoring for interrup- tion and short-circuit LED-displays for relay posi- tion, error messages and readyness for switching on Relay for message readiness for switching on Setting of limit value to be sealed Incorporated reset key Connection for external reset key Assembly-friendly plug-in base housing S 12 Safety Temperature-Limiting-Device

Description

Safety Temperature-Limiting-Device STR100 for Pt100 The electrical safety temperature limiting device type STR100, in connection with Pt100 sensors, monitors temperatures in ap - plications for which monitoring with increased safety is required. Functioning corresponds to type 2BDK as per VDE 0631. The limit temperature T can be set at the front by means of a scaled potentiometer. An unauthorized or unintended manipulation of the limit is prevented by a trans- parent plastic-plate which can be sealed.A potential free relay contact is switched off when exceeding the limit value. Safety temperature limiting devices are used in plants when temperature monitoring has to meet high require- ments:

  • Industrial furnace plants
  • Dyeing machines
  • Thermal oil plants The device ca be used in combination with sensors Pt100 (RTD). The suitability must be proved in combination with the used sensors. Regular checks are stipulated for enhanced safety requirements. The safe STR100 can be used in applications, in which an increased safety level up to SIL 2, PL c is required. It meets the requirements of safety category 3 (Safety of machines according to DIN EN 954-1, for models with supply-voltage DC 24 V and AC 230 V tested and approved by TÜV Rheinland with reports T24/00, 19.6.2000, T103/2007, 25.1.2007 and Z103/2007 E2, 2017-03-24 SIL IEC 61508 Part numbers: T224148 0...200 °C AC 230 V T224142 100...300 °C AC 230 V T224144 200...500 °C AC 230 V T224058 0...200 °C DC 24 V T224059 100...300 °C DC 24 V T224062 200...500 °C DC 24 V Other measuring ranges upon request STR100

ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de Safety Temperature-Limiting-Device Technische Daten STR100 Power supply Relay outputs Testing conditions Housing Switching points Sensor-Input AC 230 V DC 24 V < 2 VA < 3W 50/60 Hz 2-wire Pt 100 acc. to EN 60751/IEC 751, α = 0,00385 < 2 V, open terminals < 15 V Standard = 0,5 Ω, Option: max. 30 Ω Over-temperature, sensor break, sensor short circuit and malfunction adjustable 10°C (±25%) with reset key at the front or an external key 1 change-over contact (CO) max. AC 400 V max. DC 300 V max. 6 A max. 2000 VA (ohmic load) max. 48 W at DC 24 V 6 A

2 A AC 15 400V 2 A DC 13 24 V

4 A AC 11/AC 15 230V

3,15 A slow blow, 4 A flink 3 x 10 7 operations 1 x 105 operations with 240 V/6 A 0,5 EN 50178, EN 61010-1, EN 60947-5 AC 250 V 2 (normal) 4000 V III EN 61558-2-6 (VDE 0551) EN 61000-6-2, EN 61326-1 Class B EN 50081-1 100 % 0...50°C EN 60068-2-1 dry heat Design S 12 (plugable): 82 x 42 x 121 [mm] 12-pole, each 2 x 1,5 mm IP 40 IP 20 any Snap mounting on 35 mm standard rail conforms to DIN EN 50 022 or M4 screws 1 mm deflection 25 Hz/ 10 g 25-100 Hz 10 g 20 ms 20 g 4 ms approx. 300 g Rated supply-voltage U s Adm. tolerance Us Power consumption Frequency Max. current Max. voltage Line resistance Switching off Limit value T Switching hysteresis Reset Switching voltage Switching current Switching power nominal continous current Ith nominal operating current Ie recommended fuse for contacts expected life mechanical expected life electrical derating factor cos j 0,3 Rated insulation voltage Contamination level Rated impulse withstand volta- ge Overvolatage category Transformer Interference resistance industry Interference transmission "on"-period Rated ambient temperature range Dimensions H x B x T wire-connection Protection housing Protection terminals Fitting position Fastening Vibration resistance Shock resistance Weight 2017-03-24