Lmwb

Transcript

k L2 i 7 1 Failure 100s Start 40 10 100 6 8 2 0.1 OFF Inv. 60 80 P1 [%] 4 L3 ON 50 Failure U/t 5 9 120 10 30 50s Powermodul I=0 A1 L1 LMWB I< 40 60 80 5 P2 [%] 100 110 LOAD MONITOR Real Power Watt True power monitor Type: LMWB Delay 3 Range 2MIN WIN 2MAX MIN/MAX Rel 1 Reset 0.75 Rel 2 Temp 6 1.5kW Function Y1 16 Y2 18 15 A2 T1 T2 26 25 28 103mm 45mm FEATURES 5mm DESCRIPTION: • True power monitor for motors and other loads • Temperature monitoring of motor windings • Single and symmetric 3-Phase loads • 0,75kW, 1,5kW, 3kW and 6kW ranges w/o ext. CT • Min. and max. monitoring with individual or parallel working relays or 2 max. or 2 min. thresholds with individual relays • Adjustable start-up delay 1-100s • Off delay 0,1-50s • Recognition of disconnected load • Reset Key • Fault latch • Supply voltages selectable via power modules CONNECTION DIAGRAM Three-phase connection with temperature monitoring. IN < 12A L1 L2 L3 i k L1 The LMWB has two adjustable set points that can be used for setting either one maximum and one minimum level or two individual min. or max. levels. The status of the load and each level is signalled by separate LED's and output relays. When the load exceeds the set points an adjustable time delay controls the time from the fault is recognised until the relay drops out. During the delay time the LED related to the set point will indicate the condition by flashing until the relay reacts and the LED being permanently on. The relays can be latched in their fault position by bridging the terminals Y1 and Y2. The LED's will be on during the time where the relays are latched independently of the actual load status. Releasing the latch can be done by interrupting the power supply or pressing the reset key. The unit is equipped with a start-up delay in order to suppress error messages during machine start. The delay period starts when supply voltage is applied. For a complete load protection the LMWB include a temperature monitor that can be used with the standard PTC resistors used in motor windings. The temperature monitor is overriding the load function on relay 2. Reset A1 The unit monitors the true power supplied to a single phase or a symmetrical 3-phase load up to 7,2 kW without using external current transformers. For a higher resolution the LMWB has 4 ranges. The overload current can be up to 6 or 12A continuously depending on range. L3 L2 15 FUNCTION DIAGRAM (Further examples in the manual) 25 Window function (WIN) 16 18 26 28 U T1 Y1 Y2 15 16 18 A2 T2 25 LED U/t 26 28 LED Failure P2 LED Failure P1 Rel 2 Rel 1 Single-phase connection with current transformer and fault latch L1 P1 P2 N Start Delay Delay Minimum and maximum monitoring A1 i L1 k U L3 L2 LED U/t LED Failure P2 15 25 LED Failure P1 Rel 2 16 18 26 28 Y1 Y2 15 16 A2 18 T1 Rel 1 T2 25 26 28 P1 P2 Start Thiim A/S Transformervej 31 2730 Herlev - Denmark Delay Tel.: +45 4485 8000 Fax: +45 4485 8005 Delay 49 Web: www.thiim.com Webshop: shop.thiim.com ORDERING INFORMATION SPECIFICATIONS INPUT Waveform Sinus 10 to 400 Hz / 10 to 100 Hz weighted PWM Measuring voltage Input resistance, voltage 1-phase 0 to 480VAC 3-phase 0 to 480/277VAC 1,25MΩ Measuring Input current Range 0,75kW, 1,5kW Range 3kW, 6kW Input resistance, current 0-12A (cont. w. >5mm airspace between units) 0,15 - 6A 0,3 - 12A <10mΩ Detection of disconnected load Interruption 0,75kW, 1,5kW Recognition 0,75kW, 1,5kW Interruption 3kW, 6kW Recognition 3kW, 6kW I< <150mA >300mA <180mA >360mA Temperature monitoring Terminals T1-T2 Release value (Relay off) ≥3,6kΩ Response value (Relay on) ≤1,8kΩ Measuring voltage <7,5V @ R ≤ 4,0 (IEC 60947-5-1) Overvoltage category III (IEC 60664-1) Rated surge voltage 4kV Fault latch Y1-Y2 bridged. Potential equal to measuring cirquit PERFORMANCE PARAMETERS Switching threshold P1 Adjustable 10% to 120% of PN Switching threshold P2 Adjustable 5% to 110% of PN Hysteresis 1% of max. measuring range Basic accuracy ±2% of max. scale value Adjustment accuracy ≤5% of max. scale value Repetition accuracy ±2% Frequency dependance ≤0,025% / Hz Temperature dependence ≤0,02% / °C TIMING Start up supression time 1...100 s Tripping delay 0,1s...50s Reset time 500ms OUTPUT Relay 2 x potential free change over contacts Switching capacity 5A/250VAC (w. >5mm airspace betw. units) Fusing 5 A, Fast Mechanical life > 20 x 106 operations Electrical life > 2 x 105 operations at 1000VA resistive load Switching capacity max. 60/min at 100VA resistive load max. 6/min at 1000VA resistive load IEC 60947-5-1 Rated surge voltage 4kV SUPPLY AC supply range 12-500VAC (specification on power module) Selectable via power module TR3 Terminals A1-A2 are galvanically separated AC frequency range 50 to 60Hz (specification on power module) Reset time >500ms Power consumption 3,5 VA (3W) Duty cycle 100% Overvoltage category III (IEC 60664-1) Rated surge voltage 4kV AMBIENT CONDITIONS Temperature range Humidity Pollution degree Vibration resistance Shock resistance MECHANICAL Housing Terminals Mounting Weight - 25°C to + 55°C ambient (IEC 60068-1) - 25°C to + 40°C ambient (UL 508) 15% - 85% RH (IEC 60721-3-3 class 3k3) 3 (IEC 60664-1) 10 to 55Hz 0,35 (IEC 60069-2-6) 15g 11ms (IEC 60068-2-27) EXAMPLE: LMWB M 230 A B 4 C TYPE Load monitoring relay LMWB SUPPLY AC with transformer SUPPLY VOLTAGE From 99 to 140 VAC From 198 to 264 VAC From 341 to 440 VAC M 110 230 400 Other Voltages on request ADJUSTMENT Switch and trimpot adjustable A HOUSING Rail mounting.(internal transformer) B SIZE 45 mm. 2 C/O 4 CODE END C FURTHER EXAMPLES I=0 ON with minimum monitoring (2MIN + I=0 ON) U LED U/t LED Failure P2 LED Failure P1 LED I=0 Rel 2 Rel 1 P2 P1 Start Delay Delay I=0 Delay Start I=0 Inv. with minimum monitoring (2MIN + I Inv.) U LED U/t LED Failure P2 LED Failure P1 LED I=0 Rel 2 Rel 1 P2 P1 Start Delay Delay I=0 Delay Start I=0 ON with maximum monitoring (2MAX + I=0 ON) U LED U/t LED Failure P2 LED Failure P1 Self-extinguising plastic. IP40 Tightening torque max. 1Nm (PZ1) IP20. 1 x 4 or 1 x 0,5 to 2,5mm² with end sleeve 2 x 2,5 or 2 x 0,5 to 1,5mm² with end sleeve DIN rail TS 35 (EN 60715). Any position LED I=0 Rel 2 Rel 1 P1 P2 0.230 kg in 45 mm. housing Start Delay Delay I=0 Delay Start Delay I=0 with maximum monitoring (2MAX + I=0 Inv.) U EN 60715 EN 60947-8 IEC 60068-1 IEC 60068-2-27 IEC 60068-2-6 IEC 60664-1 IEC 60721-3-3 Class 3k3 IEC 60947-5-1 LED U/t LED Failure P2 LED Failure P1 LED I=0 Rel 2 Rel 1 P2 P1 50 We reserve the right to make changes for product improvement. Start Delay Delay I=0 Delay Start LMWB.INDD - 201202