Thermistor motor protection relays

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1 Thermistor motor protection relays Content Benefits and advantages... / 68 Selection table... / 68 Ordering details CM-MSE... / 69 CM-MSS... / 69 CM-MSN... / 7 PTC sensor C0... / 7 Technical data... / 73 Approvals and marks... / 6 Technical diagrams... /0 Dimensional drawings... /03 Accessories... /04 /67 CDC0004C007

2 CM-MSE, CM-MSS, CM-MSN Benefits and advantages, Selection table Operating principle and fields of application for thermistor motor protection relays The CM range of thermistor motor protection relays are used to control motors equipped with PTC temperature sensors. The PTC temperature sensors are incorporated in the motor windings to measure the motor heating. This enables direct control and evaluation of the following operating conditions: heavy duty starting increased switching frequency single-phase operation high ambient temperature insufficient cooling break operation unbalance Further applications: Temperature monitoring of equipment with PTC sensors integrated, such as machine rolling bearings, hot-air ventilators, oil, air, heating installations, etc. Resistance characteristic for one single temperature sensor acc. to DIN The relay is independent of the rated motor current, the insulation class and the method of starting. The PTC sensors are connected in series to the terminals T a and T b (or T a and T bx without short-circuit detection). The number of possible PTC sensors per measuring circuit is limited by the sum of the individual PTC sensor resistances: R G = R + R + R N.5 k. Under normal operating conditions the resistance is below the response threshold. If only one of the PTC resistors heats up excessively, the output relay de-energizes. If the autoreset function is configured, the output relay energizes automatically after cooling down. Devices with manual (pushbutton on front-side) or remote reset configuration have to be controlled via the control input by the required signal. SVC F039 NAT = Nominal response temperature Selection table thermistor motor protection relays CM-MSE CM-MSS () CM-MSS () CM-MSS (3) CM-MSS (4) CM-MSS (5) CM-MSS (6) CM-MSS (7) CM-MSN Function Measuring range Number of sensor circuits 3 6 Wire break monitoring Short-circuit detection Non-volatile fault storage ) ) ) ) ) Operation/Reset Auto reset ) ) ) ) ) Manual reset Remote reset Test button Output contacts Operational principle closed-circuit principle Number / type Width of enclosure ) configurable via terminals ) Auto reset without non-volatile fault storage configurable by permanent jumpering of connecting terminals S-T or S/X-S/X /68 CDC0004C007 c/o n/o c/o c/o n/o + n/c c/o c/o per sensor circuit n/o + n/c accumulative evaluation n/o + n/c accumulative evaluation.5 mm 45 mm Supply voltages and order codes 4 V AC SVR550805R9300 SVR4308R V AC/DC SVR430800R900 SVR43080R9300 SVR43070R V AC SVR550800R9300 SVR4308R0300 SVR4307R V AC SVR55080R9300 SVR43080R00 SVR4308R300 SVR4307R V AC SVR4307R V AC/DC SVR43070R0400 SVR43070R0300 SVR43070R000 SVR43070R0500 SVR45005R000

3 CM-MSE, CM-MSS Ordering details CDC 5 0 F0b03 CM-MSE Auto reset Connection of several sensors (max. 6 sensors conn. in series) Monitoring of bimetals n/o contact Excellent cost / performance ratio A T T T A T A A SVC F040 A-A T-T Sensor circuit 3-4 Output contact - Closed-circuit principle piece piece SVC F04 CM-MSE CM-MSE 4 V AC 0-30 V AC 0-40 V AC SVR R9300 SVR R9300 SVR R / / / 0.4 SVR F00 CM-MSS (), c/o contact Auto reset Connection of several sensors Monitoring of bimetals c/o contact LEDs for status indication A T T T A T A 4 4 A SVC F04 A-A T-T Sensor circuit -/4 Output contact - Closed-circuit principle SVC F04 piece piece CM-MSS () CM-MSS () 4 V AC/DC ) 0-40 V AC SVR R900 SVR R / / 0.33 SVR F300 CM-MSS (), c/o contacts Fault storage can be switched off Auto reset configurable Reset button Remote reset Monitoring of bimetals c/o contacts LEDs for status indication A T X T T A T A S 4 A SVC F59 A-A T-T Sensor circuit S-T Remote reset X-T jumper = no storage -/4 Output contacts - -/4 Closed-circuit principle piece T T T S X L L L3 M ϑ ϑ ϑ 3 piece CDC 5 3 F0b07 CM-MSS () SVR F300 CM-MSS () 4 V AC/DC ) 4 V AC 0-30 V AC 0-40 V AC SVR R9300 SVR R9300 SVR R0300 SVR R300 CM-MSS (3), c/o contacts, short-circuit monitoring confi gurable Fault storage can be switched off Auto reset configurable Reset button Remote reset Monitoring of bimetals Short-circuit monitoring of the sensor circuit configurable c/o contacts LEDs for status indication A Tx T T T A T A 4 4 S 4 4 A SVC F043 A-A S-T remote reset jumper = without storage T-Tx measuring circuit without short-circuit monitoring T-T measuring circuit with short-circuit monitoring -/4 Output contacts -/4 Closed-circuit principle 0.5 / / / / 0.33 SVC F044 CM-MSS (3) piece piece F: red LED - fault tripping U: green LED - control Marker label Reset button CM-MSS (3) 4 V AC/DC ) 0-30 V AC 0-40 V AC V AC SVR R9300 SVR R0300 SVR R300 SVR R / / / / 0.33 ) not electrically isolated Accessories: PTC sensors... /7 Technical data.../73 Technical diagrams... /0 Dimensional drawings.../03 Accessories... /04 /69 CDC0004C007

4 CDC F0t07 CM-MSS (4) CDC F0t04 CM-MSS (5) Reset / test button F: red LED - fault tripping U: green LED - control Marker label SVR F000 CM-MSS (6) Thermistor motor protection relays CM-MSS Ordering details CM-MSS (4) + CM-MSS (5), -channel Short-circuit monitoring of the sensor circuit Wide range: 4-40 V AC/DC Non-volatile fault storage selectable Reset and test button Remote reset Auto reset configurable Output contacts: n/c and n/o or c/o contacts LEDs for status indication CM-MSS (4) -channel n/c, n/o CM-MSS (5) -channel c/o CM-MSS (6), -channel, single evaluation Short-circuit monitoring for the sensor circuits Wide range: 4-40 V AC/DC separate sensor circuits for monitoring of two motors or one motor with sensor circuits (prewarning and final switch off) Reset button Auto reset configurable Output contacts: x c/o contact 3 LEDs for status indication CM-MSS (4) A T T S T A 3 T A 4 S 3 4 A CM-MSS (5) A S/X T T T A S/X S/X ϑ T A 4 4 S/X 4 4 A SVC F 048 CDC 5 47 F0b06 CDC 5 06 F0004 A-A T-T Sensor circuit S-T Remote reset 3-4 Output contacts - - Closed-circuit principle A-A T-T Sensor circuit S/X-S/X Reset -/4 Output contacts - -/4 Closed-circuit principle S/X T T S/X piece jumper = no storage L L L3 piece 4-40 V AC/DC SVR R / V AC/DC SVR R / 0.33 A-A -/4, Output contacts - -/4 Closed-circuit principle T-T Sensor circuit T-T S-T jumpered = no storage SVC F045 CDC F0004 SVC F 046 Reset button to F-F: red LED - fault tripping to U: green LED - control Marker label piece piece CM-MSS (6) 4-40 V AC/DC SVR R / 0.33 Accessories: PTC sensors... /7 Technical data.../73 Technical diagrams... /0 Dimensional drawings.../03 Accessories... /04 /70 CDC0004C007

5 CM-MSS, CM-MSN Ordering details CM-MSS (7), 3 sensor circuits, accumulative evaluation SVR F0500 Short-circuit monitoring for the sensor circuits Wide range 4-40 V AC/DC Non-volatile fault storage configurable Remote reset Auto reset configurable Reset and test button Output contacts: n/c and n/o contact 4 LEDs for status indication SVC F049 A-A 3-4 Output contacts - - Closed-circuit principle T-T Sensor circuits T-T 3T-T S-T Remote reset jumpered = no storage SVC F047 CM-MSS (7) Reset / test button to F-F3: red LED - fault tripping to 3 U: green LED - control Marker label piece piece CM-MSS (7) 4-40 V AC/DC SVR R / 0.33 CM-MSN, 6 sensor circuits, accumulative evaluation SVR F0400 Short-circuit monitoring of the sensor circuit Wide range: 4-40 V AC/DC Non-volatile fault storage configurable Remote reset Auto reset configurable Reset and test button Output contacts: n/c, n/o contact 7 LEDs for status indication SVC F050 A-A 3-4 Output contacts - - Closed-circuit principle T...6T-T S-T Sensor circuits Remote reset, jumper = no storage SVC F05 CM-MSN Reset / Test button to F-F6: red LED - fault tripping F to F6 U: green LED - control Marker label piece piece CM-MSN 4-40 V AC/DC SVR R / 0.5 accumulative evaluation = if any input exeeds the threshold, the output relay will trip Accessories: PTC sensors... /7 Technical data.../73 Technical diagrams... /0 Dimensional drawings.../03 Accessories... /04 /7 CDC0004C007

6 Thermistor motor protection PTC temperature sensors C0 Ordering details, technical data RPTC [] Temperature sensor characteristic -0 C TPTC [ C] TNF - 0 K TNF - 5 K TNF TNF + 5 K TNF + 5 K CDC F008 The PTC temperature sensors (temperature-dependent with positive temperature coefficient) are selected by the manufacturer of the motor depending on: the motor insulation class according to IEC/EN , the special characteristics of the motor, such as the conductor cross-section of the windings, the permissible overload factor etc. special conditions prescribed by the user, such as the permissible ambient temperature, risks resulting from locked rotor, extent of permitted overload etc. One temperature sensor must be embedded in each phase winding. For instance, in case of three-phase squirrel cage motors, three sensors are embedded in the stator windings. For pole-changing motors with one winding (Dahlander connection), 3 sensors are also sufficient. Pole-changing motors with two windings, however, require 6 sensors. If an additional warning is required before the motor is switched off, separate sensors for a correspon dingly lower temperature must be embedded in the winding. They have to be connected to a second control unit. The sensors are suitable for embedding in motor windings with rated operating voltages of up to 600 V AC. Conductor length: 500 mm per sensor. A 4 V varistor can be connected in parallel to protect the sensors from overvoltage. Due to their characteristics, the thermistor motor protection relays can also be used with PTC temperature sensors of other manufacturers which comply with DIN and DIN Rated response Color coding Pack. temperature T NF unit set set piece Temperature sensor C0, standard version acc. to DIN 4408 set = 3 SVC F053 C0-70 C0-80 C0-90 C0-00 C0-0 C0-0 C0-30 C0-40 C0-50 C0-60 C C 80 C 90 C 00 C 0 C 0 C 30 C 40 C 50 C 60 C 70 C white-brown white-white green-green red-red brown-brown gray-gray blue-blue white-blue black-black blue-red white-green GHC R000 GHC R000 GHC R0003 GHC R0004 GHC R0005 GHC R0006 GHC R0007 GHC R00 GHC R0008 GHC R0009 GHC R000 Rated response Color coding Pack. temperature T NF unit piece piece Triple temperature sensor C0-3 C C black-black GHC R /0. Technical data Characteristic data Sensor type C0 Cold-state resistance at 5 C Warm-state resistance ± 5 up to 6 K of rated response temperature T NF Thermal time constant, sensor open ) < 5 s Permitted ambient temperature +80 C ) ) Not embedded in windings. For triple temperature sensor take values x 3. /7 CDC0004C007 Rated response temperature tolerance T NF T NF 70 5 C 80 5 C 90 5 C 00 5 C 0 5 C 0 5 C 30 5 C 40 5 C 50 5 C 60 5 C PTC resistance R from -0 C to T NF - 0 K 00 PTC resistance R at PTC temperatures of: T NF - T NF (U PTC.5 V) T NF + T NF (U PTC.5 V) T NF + 5 K (U PTC 7.5 V) C

7 CM-MSE, CM-MSS, CM-MSN Technical data CM-MSE CM-MSS CM-MSN Input circuit U S - A-A 4 V AC approx..5 VA power consumption A-A 4 V AC/DC approx.. VA / 0.6 W A-A 0-30 V AC approx..5 VA A-A 0-40 V AC approx..5 VA A-A V AC approx..7 VA A-A 4-40 V AC/DC approx W / approx VA U S tolerance -5 % % Rated frequency AC: Hz / 4-40 V AC/DC versions: Hz Duty time 00 % Measuring circuit T-T T-T/Tx, T...6T-T T...6T-T Monitoring function temperature monitoring by means of PTC sensors Number of senor circuits, oder 3 (see order. details) 6 Short-circuit monitoring - see ordering details yes Non-volatile fault storage - see ordering details configurable Test function - see ordering details yes Sensor circuit Temperature threshold (relay de-energizes) k CM-MSS (+): k 5 % CM-MSS (3-7): 3.6 k 5 % Temperature hysteresis (relay energizes).7-.3 k CM-MSS (+): k 5 % CM-MSS (3-7):.6 k 5 % Short circuit threshold (relay de-energizes) <0 Short circuit hysteresis (relay energizes) >40 Maximum total resistance of sensors connected in series (cold state).5 k Maximum sensor cable length for short-circuit detection x 00 m at 0.75 mm, x 400 m at.5 mm Response time <00 ms Control circuit for storage and hysteresis function Remote reset S-T or S/X-S/X - n/o contact Maximum no-load voltage - approx. 5 V, 4-40 V; AC/DC versions: 5.5 V Maximum cable length - 50 m, m if shielded Indication of operational states Control U: green LED - V: control applied Fault indication F: red LED - V: output relay de-energized Output circuits 3-4 -/4, -/4, 3-4, - 3-4, - Kind of output n/o contact CM-MSS (): c/o contact CM-MSS (,3,5): c/o contacts CM-MSS (4, 7): n/o + n/c CM-MSS (6): x c/o contact n/o + n/c contact Operational principle closed-circuit principle (output relay de-energizes if the measured value exceeds/drops below the adjusted threshold) Contact ma terial AgCdO CM-MSS (++6): AgCdO CM-MSS ( ): AgNi AgNi Rated voltage (VDE 00, IEC 664-, IEC ) 50 V Maximum switching voltage 50 V Rated operational current I e AC (resistive) 30 V 4 A (IEC/EN ) AC5 (inductive) 30 V 3 A DC (resistive) 4 V 4 A DC3 (inductive) 4 V A (.5 A - n/c contact ) ) AC rating Utilization category (UL 508) (Control Circuit Rating Code) B 300 max. rated operational voltage 300 V AC max. continuous thermal current at B A max. making/breaking apparent power at B /360 VA Mechanical lifetime 30 (0 ) ) x 0 6 switching cycles Electrical lifetime (AC, 30 V, 4 A) 0. x 0 6 switching cycles Max. fuse rating to achieve n/c contact 0 A fast-acting 4 A (0 A ) ) fast-acting 0 A fast-acting short circuit protection n/o contact 0 A fast-acting 6 A (0 A ) ) fast-acting 0 A fast-acting General data Dimensions (W x H X D).5 x 78 x 78.5 mm (0.89 x 3.07 x 3.09 in).5 x 78 x 00 mm (0.89 x 3.07 x 3.94 in) 45 x 78 x 00 mm (.77 x 3.07 x 3.94 in) approx. 0. kg (0.4 lb) approx. 0.5 kg (0.33 lb) approx. 0.3 kg (0.5 lb) Mounting position any Degree of protection enclosure / terminals IP50 / IP0 Ambient temperature range operation C C storage C Mounting DIN rail (IEC/EN 6075) ) SVR R 000, SVR 430 8xx R xxxx /73 CDC0004C007

8 CM-MSE, CM-MSS, CM-MSN Technical data CM-MSE CM-MSS CM-MSN Electrical connection Wire size fine strand with wire end ferrule x.5 mm ( x 6 AWG) x.5 mm ( x 4 AWG) fine strand without wire end ferrule x mm ( x 8-6 AWG) x mm ( x 8-4 AWG) rigid x -.5 mm ( x 8-6 AWG) x mm ( x 8-4 AWG) Stripping length x mm ( x 8-6 AWG) x mm ( x 0- AWG) Tightening torque 0 mm (0.39 inch) 7 mm (0.8 inch) Standards Product standard IEC 55-6, EN Low Voltage Directive 006/95/EC EMC Directive 004/08/EC, 9/63/EEC, 9/3/EEC, 93/68/EEC, 93/67/EEC Electromagnetic compatibility EN , EN electrostatic discharge IEC/EN Level 3 (6 kv / 8 kv) radiated, radio-frequency, electromagnetic field IEC/EN Level 3 (0 V/m) electrical fast transient / burst IEC/EN Level 3 ( kv / 5 khz) surge IEC/EN Level 3/4 (/ kv) conducted disturbances, induced by radio-frequency fields IEC/EN Level 3 (0 V) Operational reliability (IEC 68--6) 6 g 4 g 5 g Resistance to vibration (IEC 68--6) 0 g 6 g 0 g Environmental testing (IEC ) 4 h cycle time, 55 C, 93 % rel., 96 h Isolation data Rated voltage between supply, measuring and output circuit 50 V Rated impulse withstand voltage between all isolated circuits 4 kv / μs Test voltage between all isolated circuits.5 kv, 50 Hz, min. Pollution degree 3 Overvoltage category III Approvals... /6 /74 CDC0004C007

Thermistor motor protection relays

Thermistor motor protection relays Thermistor motor protection relays Content Benefits and advantages... / 68 Selection table... / 68 Ordering details CM-MSE... / 69 CM-MSS... / 69 CM-MSN... / 7 PTC sensor C0... / 7 Technical data... /

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