MRW 50, MRW 100, MRW 200 External Protection Barrier Quick Installation Guide Version 1.1, October 2004
Copyright 2004 GE Interlogix B.V.. All rights reserved. GE Interlogix B.V. grants the right to reprint this manual for internal use only. GE Interlogix B.V. reserves the right to change information without notice. Version 1.1, October 2004
CONTENTS 1 Mounting and opening the units... 4 1.1 Mounting the units... 4 1.2 Opening the detector... 4 2 Connecting the barriers... 6 2.1 Connecting the transmitter and receiver... 6 2.2 Setting the jumpers and switches... 7 2.3 What the LEDs mean... 7 3 Aligning and calibrating the transmitter and receiver... 8 3.1 Checking the operation of the units [ Function F1 on MRW01]... 8 Checking the transmitter... 8 Checking the receiver... 9 3.2 Aligning the units [Function F2 on MRW01]... 9 Selecting the options on the MRW01... 9 Aligning the units horizontally... 9 Aligning the units vertically... 9 Verifying field stability... 9 3.3 Verifying AGC [Function F3 on MRW01]... 10 3.4 Calibrating the units [Function F4 on MRW01]... 10 Setting the sensitivity... 10 Setting the intergration... 10 Walk testing... 10 3.5 Closing the units... 11 4 Technical specifications... 12 5 Troubleshooting... 13 6 Positioning the detectors... 14 6.1 The number of barriers to use... 14 6.2 Terrain conditions to consider... 14 6.3 Presence of fencing, trees, hedges and other obstacles... 14 6.4 Diameter of the detection field... 15 6.5 Length of the dead zones in close proximity to the devices... 16 6.6 Mounting transmitters on the same pole... 17 6.7 Connecting the devices to AC power supply... 18 6.8 Connecting the back-up power supply battery... 18 6.9 Verifying the signal with an oscilloscope... 19 7 Transmitter and receiver test sheet... 20 MRW 50-100-200 Installation Manual 3
1 MOUNTING AND OPENING THE UNITS 1.1 Mounting the units Using the aluminium clamps supplied, fix the receiver (Rx) and transmitter (Tx) units to a pole. The pole must have has an external diameter of 60 mm (see Figure 1). Figure 1: Installing the unit 1. Power supply box (MRW02 optional) 4. Pole ( 60 mm) (MRW03 optional) 2. Power and security cables 5. Sensor head 3. Base set in cement 1.2 Opening the detector 1. Unfasten the six screws on the Tx and Rx covers with the Allen key provided. 2. Rotate the cover anti-clockwise to disengage it from the latch mechanism of the tamper. 3. Remove front cover from the base. 4 MRW 50-100-200 Installation Manual
Figure 2: Transmitter circuit 1. Tamper switch 7. Mains fuse 2. Not used 8. Power supply OK LED (green) 3. Tx antenna 9. MS1 terminal block (see table below) 4. Battery (12 V, 2.2 Ah) 10. Jumper 1. Synchronisation mode Master In/Out 5. Battery fuse 11. Oscillator fault LED (red) 6. Power supply 12. Channel selector switch MS1 terminal block PIN Symbol Function 1 TMP Tamper contact NC 2 TMP Tamper contact NC 3 STBY Input for Stand-by command 0 VDC 4 TEST Input for Test command 0 VDC 5 GND Reference 0 VDC for commands and Sync. 6 SYNC In/Out synchronization signal 7 SPARE Empty 8 SPARE Empty MRW 50-100-200 Installation Manual 5
Figure 3: Receiver circuit 1. Tamper switch 9. MS1 terminal block (see table below) 2. Alignment tool connector 10. Alarm LED (red) 3. Rx antenna 11 Channel OK LED (green) 4. Battery (12 V, 2.2 Ah) 12. Jumper 1: Alarm and channel LED On/Off 5. Battery fuse 13. Integrator setting 6. Power supply 14. Sensitivity setting 7. Mains fuse 15. Channel selector switch 8. Power supply OK LED (green) 16. Digital multimeter 17. Oscilloscope test point MS1 terminal block PIN Symbol Function 1 Alarm Alarm contact NC 2 Alarm Alarm contact NC 3 TMP Tamper contact NC 4 TMP Tamper contact NC 5 Spare Empty 6 Spare Empty 2 CONNECTING THE BARRIERS 2.1 Connecting the transmitter and receiver 1. Connect the MS1 outputs and inputs (Alarm, Tamper, Test, GND) to the alarm control unit (ACU). 2. Connect the battery (12 V, 2.2 Ah) to MS2. 3. Connect the main power supply 19 VAC to MS3. 4. Use shielded cable ( 1.5 mm²) to the transformer (230 / 19 VAC, 19 VA). Earth the shield. The length of the cable to the transformer must not exceed 4 m. 5. When using two transmitters on the same pole to increase the protection height, connect a twisted pair between the GND and Sync of both transmitters (MS1 pins 5 and 6). 6 MRW 50-100-200 Installation Manual
2.2 Setting the jumpers and switches Transmitter: (see Figure 2) SW1: JP1: Select the same modulation frequency as set on the receiver. When using two transmitters on the same pole to increase protection height, set the JP1 of the first transmitter to OUT (Master). Set the JP1 of the second transmitter to IN (Slave). Select the same modulating frequencies for both transmitters. Receiver: (see Figure 3) SW1: JP1: Select the same modulation frequency as set on the transmitter. The Alarm and Channel LEDs are On when this jumper is in the ON position. 2.3 What the LEDs mean Transmitter: (see Figure 2) Power supply LED (green): Oscillator fault LED (red): The LED is On when the main power supply is connected. The oscillator (antenna) is OK when this LED is Off. Receiver: (see Figure 3) Power supply LED (green): Alarm LED (red): Channel OK LED (green): The LED is On when the main power supply is connected. The LED is On when there is an intrusion in the detection field. The LED is On when a signal of the same modulation frequency is received. MRW 50-100-200 Installation Manual 7
3 ALIGNING AND CALIBRATING THE TRANSMITTER AND RECEIVER Figure 4: MRW01 PCB 1. Special purpose (oscilloscope) 2. Connector to link with the receiver (J3) 3. Connection points for digital multimeter. 4. Gain adjustment 5. Switch: Open = Manual Gain Adjustment (MGA), Closed = Automatic Gain Control (AGC) 6. Switch to select the following MRW01 functions: F 1: Operating voltage F 2: Field strength F 3: AGC F 4: Sensitivity 7. Threshold adjustment for the walk test 8. Switch for sounder activation 9. Sounder 10. Digital multimeter To align and calibrate the detector correctly, perform the following steps. 3.1 Checking the operation of the units [ Function F1 on MRW01] Checking the transmitter 1. Check that the power supply LED (green) is On. 2. Using the digital multimeter, check that the voltage on the MS2 is 13.8 V ± 5%. 3. Check that the oscillator fault LED (red) is Off. 8 MRW 50-100-200 Installation Manual
Checking the receiver 1. Connect the alignment and calibration tool MRW01with the flat cable on J3 of the receiver. Connect a digital multimeter, range 0 VDC to 20 VDC on MRW01/ MS1. 2. Check that the power supply LED (green) is On. 3. Select F1 on the MRW01and, using the digital multimeter, check that the voltage is 13.8 V ± 5 %. 4. Check that the same modulation channel is selected as on the transmitter. 5. With PT7 on the receiver, set the sensitivity to 50%. 6. With PT2 on the receiver, set the integrator to 40%. 3.2 Aligning the units [Function F2 on MRW01] Selecting the options on the MRW01 1. On the MRW01, select F2 to measure the field strength. 2. Switch S2 to the Open position (Manual Gain Adjustment is On). 3. Using the digital multimeter, adjust the gain with PT4 to 6.0 V ± 10 %. Aligning the units horizontally Aligning the units vertically 1. Rotate the receiver horizontally until the maximum field strength is measured on the digital multimeter. 2. Rotate the transmitter horizontally until the maximum field strength is measured on the digital multimeter. If the measured field strength exceeds 10 V, adjust the gain by rotating PT4 on the MRW01 until it reads less than 10 V. 3. Fix the horizontal mounting screws on both the receiver and transmitter. 1. Rotate the receiver upwards and then slowly rotate it downwards until the maximum field strength is measured on the digital multimeter. 2. Rotate the transmitter upwards and then slowly rotate it downwards until the maximum field strength is measured on the digital multimeter. If the measured field strength exceeds 10 V, adjust the gain by rotating PT4 on the MRW01 until it reads less than 10 V. 3. Fix the vertical mounting screws on both the receiver and transmitter. Verifying field stability 1. On the MRW01, switch S2 to the closed position (Automatic Power Control is On). 2. Wait two minutes for the system to stabilise. 3. On the digital multimeter, measure stable field strength of approximately 6.0 V with a maximum variation of 10% over time. It is not the measured absolute value that is important, but its stability over time. An unstable value indicates that the field is disturbed by moving objects in the protected area or by interference. This instability will cause false alarms. MRW 50-100-200 Installation Manual 9
3.3 Verifying AGC [Function F3 on MRW01] 1. On the MRW01, select F3 (AGC measurement). 2. Measure an AGC value between 2.5 VDC to 6.5 VDC. The AGC value must be within these limits. A low value indicates a strong received signal. A high value indicates a weak received signal. Values greater than 6 VDC indicate that the received signal is too weak. This can be due to one of the following reasons: The distance between the Tx and Rx is too large Tx and Rx positioned are too high above the ground There are obstacles between the Tx and Rx Poor alignment. To solve the problem: Check if the distance between the Rx and Tx falls within the limits defined by the model Adjust the heights of the Tx and Rx Redo the alignment (see Section 3.2 Aligning the units [Function F2 on MRW01] ). 3.4 Calibrating the units [Function F4 on MRW01] Setting the sensitivity 1. On the MRW01, select F4 (Sensitivity measurement). 2. Using PT7 on the receiver board, adjust the sensitivity to minimum 25%.. 50% 75% maximum. The correct level depends on the requirements of the site (see Section 6 Positioning the detectors). 3. Measure 5 VDC (25%) 3.3 VDC (50%).. 1.6 VDC (75%). A sensitivity setting that is too high may cause nuisance alarms. It is advisable not to set a sensitivity level above 75% (potentiometer), which corresponds to about 1.6 VDC. A sensitivity setting that is too low may prevent the system from detecting a small sized intruder. It is advisable not to set a sensitivity level lower than 25% (potentiometer), which corresponds to about 5 VDC. Setting the intergration 1. Using PT2 on the receiver board, adjust the integration to minimum 30%. 40%.80% maximum. The correct level depends on the requirements of the site (see Section 6 Positioning the detectors). An integration setting that is too low may cause nuisance alarms. It is advisable not to set an integration level lower than 30% (potentiometer). An integration setting that is too high may prevent the detection of an intruder who is running. It is advisable not to set an integration level above 80% (potentiometer). Walk testing It is recommended to start the tests with the sensitivity set to 50% and the integration set to 40%. Walk tests are carried out by a person walking upright at a speed of 0.5 m/sec. 10 MRW 50-100-200 Installation Manual
1. On the MRW01, turn on S1 (the buzzer). 2. Turn PT3 until there is intermittent noise. 3. Turn PT3 back until there is no intermittent noise. 4. Walk test the field: Intrusion in the field Intermittent noise (beep...beep.. beep). Alarm condition Continuous noise (beeeeeeeeeep). No movement Silence. 5. Using PT2 and PT7 on the receiver board, adjust Integration and Sensitivity to meet the requirements of the site. 3.5 Closing the units Integration Speed of the target Sensitivity Volume of the target High integration Increased risk of no alarm response. High sensitivity Increased risk of false alarms. 1. Before replacing the cover onto the base, push the six screws out without removing them. 2. Replace the cover by aligning the mark on the cover with the left mark on the base (Figure 5.) 3. Turn the cover clockwise until the mark on the cover is positioned in the middle between the two marks on the base. 4. Fasten the six screws with the Allen key. Figure 5: Closing the unit To close To open MRW 50-100-200 Installation Manual 11
4 TECHNICAL SPECIFICATIONS Operating frequency: F1 10.5 to 10.6 GHz (Netherlands, Belgium, UK, Denmark, Italy, Sweden, Ireland, Poland, Norway, Finland) F2 9.5 to 9.975 GHz (France, Austria, Portugal, Czech Rep.) F3 9.2 to 9.5 GHz (Germany) F4 10.526 GHz (Spain Luxembourg) Max. RF power: 20 to 500 mw EIRP (in accordance with national requirements) Operating voltage: Main power supply: Battery: 17 VAC to 21 VAC 11.5 VDC to 16 VDC Current consumption: Transmitter Receiver Main power supply Battery Main power supply Battery Normal operation 76 ma (AC) 32 ma (DC) 80 ma (AC) 34 ma (DC) Alarm mode 76 ma (AC) 32 ma (DC) 50 ma (AC) 19 ma (DC) Modulation: On/Off Duty cycle: 50/50 No. modulation channels: 4 Range: MRW 50 MRW 100 MRW 200 Type of battery: Alarm output: Tamper output: 50 m 100 m 200 m 12 V, 2.3 Ah (48-hour autonomy when fully charged) (BS122N) NC relay 100 ma, 30 VDC (R= 40 ohm) Micro-switch 1 A, 250 VDC LED indicators: Transmitter Receiver Power supply On: Green Green Alarm state: Oscillator fault: Channel recognition: Red Red Green Weight without battery: 1.5 kg 1.5 kg Diameter: Depth including clamps: External diameter of fixing pole: 295 mm 250 mm 60 mm Operating temperature: -25 C to +55 C IP/IK classification: IP55 GE Security declares that this intrusion detector "MRW 50-100-200" complies with the essential requirements and other important dispositions of the Directive 1999/5/EC (Art.3.1 a -3.1 b -3.2) 12 MRW 50-100-200 Installation Manual
5 TROUBLESHOOTING If false alarms occur, check that the mechanical conditions of the barrier installation and the environmental conditions of the site, as described in Section 6, do not present any anomalies (such as, height of the barriers from the ground, obstacles, etc.). Correct any anomalies found. The barriers then need to be aligned, as described in Section 3 Alignment and Calibration. Alternatively verify the measurements taken during the installation and recorded in the specific data sheet enclosed to check that they do not exceed the limits indicated. If the limits are exceeded, see Section 3. If these measurements are within the specified limits, then animals crossing the protection beam could be causing the false alarms. In this case, reduce the sensitivity or prevent the animals from entering the area. Fault Possible cause Possible solution Main power supply, LED switched off Voltage +13.8 VDC incorrect Battery does not charge Alarm LED switched on Measured AGC voltage too high 19 VAC power supply is not available Connections interrupted Faulty transformer / fuse blown Voltage regulator fault Bad battery Fuse blown Fuse interrupted Faulty battery Movement or obstacles in protected area Heads not aligned Heads not aligned Obstacles inside protected area Received signal too low Faulty Rx circuit Faulty microwave sensor Check connections Replace transformer Check fuse Replace circuit or battery Check fuse Replace fuse Replace battery Check that there is nothing inside the protected area Align the units as described in Section 3.2 Align the units Remove obstacles Check transmitter Replace receiver Replace the microwave detector sensor Channel LED switched off Wrong channel selection Use the receiver s channel selector and set to the same channel as that of the transmitter Tamper contact open Micro switch open Cover is in the wrong position Tilt bulb open Check if micro switch (DIP switch) is closed Check position of the cover Check the position of the tilt bulb MRW 50-100-200 Installation Manual 13
6 POSITIONING THE DETECTORS 6.1 The number of barriers to use When using microwave volumetric barriers to protect a closed perimeter always use an even number of barriers to avoid reciprocal interference between barriers. Figure 6: Examples of correct solutions when using an odd number of barriers X Incorrect Good* Better Interference possible * We recommend that you verify the signal with an oscilloscope. See section 6.9 Verifying the signal with an oscilloscope. 6.2 Terrain conditions to consider Do not install the MRW 50-100-200 barrier in the presence of: High grass (higher than 10 cm) Ponds Rivers or streams that run longitudinally to the barrier On very undulating terrain. 6.3 Presence of fencing, trees, hedges and other obstacles Metal fencing is reflective so the following points must be considered: Fencing must be fixed so that it cannot move in the wind. Do not install the barriers parallel to fencing. See Figure 7 below for the correct positioning next to fencing. Figure 7: Positioning barriers alongside fencing Wrong: 14 MRW 50-100-200 Installation Manual
Correct: Fencing - - - - - If the sensitive beam is bounded on the sides by two metal fences, the corridor between the two must be greater than 5 m as otherwise the movement of the fences can cause interference. See Figure 7: Positioning barriers alongside fencing. Reflections caused by metal fencing behind the devices and large metal parts jutting out inside the detection area, such as metal fence poles, can divert the sensor coverage thus detecting movement in areas not intended to be covered. Avoid any obstacles in the protection area, such as trees, hedges, shrubs etc. Movement caused by wind could cause false alarms. Figure 8: Interference in the sensitive zone caused by shrubs and tree branches However, they can be located near the detection zones if regularly maintained and their movement in the wind is restricted. Pillars, posts (for example lighting posts) and other obstacles can be located along the detection zone if their dimensions are not excessive compared to the protection beam. 6.4 Diameter of the detection field The diameter of the detection field depends on: Model used. Distance between the transmitter and the receiver. Sensitivity setting. MRW 50-100-200 Installation Manual 15
Figure 9: Detection pattern a a/2 a = diameter of the detection pattern The following graphs show the maximum diameter of the detection pattern relative to the barrier length at maximum and minimum sensitivity (Figure 10). Figure 10: MRW 50-100-200: Diameter of the detection pattern in an unobstructed space at the mid-point of the sensitive zone relative to the distance between the transmitter and receiver Max. range of MRW Detection pattern diameter Max. sensitivity Min. sensitivity Distance between Rx and Tx The sensitivity setting, as well as the distance between the Tx and Rx determines the diameter of the detection pattern. Figure 10 shows the diameter of a detection pattern for a barrier placed in an unobstructed space. The actual diameter of the detection pattern also depends on the installation conditions as absorbing and reflecting elements can distort the beam. 6.5 Length of the dead zones in close proximity to the devices The length of the dead zones close to the devices depends on the following elements: Model used Height of the devices (Tx and Rx) from the ground Sensitivity setting 16 MRW 50-100-200 Installation Manual
The recommended height for standard installations is 80 cm. At 50% sensitivity setting, the minimum recommended distance for the crossing of beams from two barriers is 5 m. The following figure shows the dead zones at the intersection of two barriers (Figure 11). Figure 11: Minimum recommended distance for overlapping when two sensitive beams cross The following figures show the length of the dead zone depending on the height of the devices from the ground at the maximum and minimum sensitivity for the different models (Figure 12). Figure 12: Length of the dead zone near the devices relative to the distance from the centre of the devices to the ground for models MRW 50-100-200 Dead zone 16 m Min. sensitivity 10 Possible unstable signal 5 Max. sensitivity 50 100 150 Mounting height cm 6.6 Mounting transmitters on the same pole Two transmitters can be mounted on the same pole to increase protection height. The protection height achieved depends on the sensitivity settings (by the diameter of the detection field). The first barrier is usually mounted 80 cm high and the second barrier is 150 cm high (Figure 13). For high security applications, where a high sensitivity is required, the first barrier can be mounted between 40-50 cm. Synchronise the two transmitters by connecting a twisted pair between the terminal block MS1 pins 5 and 6 of both Tx s and set the jumper JP1 (SYNC) in one Tx to position In and in the other Tx in position Out. MRW 50-100-200 Installation Manual 17
Figure 13: Mounting transmitters on the same pole Tx 1 Tx 2 Rx 1 Rx 2 6.7 Connecting the devices to AC power supply The devices can use 13.8 DC current. However, it is better to use 19 VAC power supply (17 21 VAC). The connection between the device and the transformer (optional) must be as short as possible (less than 4 m) and the cross section of the cable must not be less than 1.5 mm 2. The power supply cables that connect the transformer to the equipment must be shielded and the shield must be earthed. We recommend that you use the transformer MRW02. Only use a safety transformer with the following characteristics: Primary voltage: 230 VAC Secondary voltage: 19 VAC Minimum power: 30 VA It is important to connect the body of the transformer to an earth-ground wire. The transformer connection to the mains (230 VAC) must use a circuit breaker with the following characteristics: Bipolar with a minimum distance of 3 m between the contacts. Pre-installed Be easily accessible. National regulations and standards on the installation of devices to the mains (230 VAC) must be complied with. 6.8 Connecting the back-up power supply battery Inside each sensor head there is space for a rechargeable 12 V 2.3 Ah (BS122N) leadacid battery (optional). The housing of the optional stand-by battery must have a flame rating that is equal or greater than UL 94-HB. 18 MRW 50-100-200 Installation Manual
The barrier can be supplied with 24 VDC by connecting it to the 19 VAC pins. 6.9 Verifying the signal with an oscilloscope The MRW01 has two test points TP1 and TP2 (Figure 4). Connect these two test points to an oscilloscope to check the shape of the signal wave received. A good alignment between the transmission head and the receiver head generates a waveform as shown in Figure 14 A. A poor alignment generates a waveform as shown in Figure 14 B. The presence of noise in the signal indicates that the signal received is poor quality and that the alignment procedure must be repeated until a steady and noise-free waveform is obtained. Figure 14: Verifying the signal quality A: Good alignment B: Poor alignment mv mv 100 100 0 A 0-100 -100 A= 200 mvpp +/- 10% Channel 1 = 2 KHz 100 µsec/division 100 µsec/division MRW 50-100-200 Installation Manual 19
7 TRANSMITTER AND RECEIVER TEST SHEET MRW50-F1 MRW100-F1 MRW200-F1 Barrier N : MRW50-F2 MRW100-F2 MRW200-F2 MRW50-F3 MRW100-F3 MRW200-F3 MRW50-F4 MRW100-F4 MRW200-F4 Serial N : Customer: Address: Transmitter test data: Values Measured on the Transmitter Measurements Standard Measured Values Values Installation Maintenance 1 Supply voltage, measured between pins 13.8 VDC ± 10% 1-2 of MS2 with battery disconnected. (*) 2 Inside supply voltage measured between 8 VDC ± 10% pin 16 of J2 and GND. (**) 3 Inside supply voltage measured between 5 VDC ± 10% pin 12 of J2 and GND. 4 Oscillator OK voltage measured between 4 V ± 10% pin 13 of J2 and GND. 5 Master/Slave selection - Master Slave Master Slave 6 Modulation channel selected Ch 1 = 2000 Hz Ch 2 = 2300 Hz Ch 3 = 2650 Hz Ch 4 = 3000 Hz Receiver test data: Ch 1 = 2000 Hz Ch 2 = 2300 Hz Ch 3 = 2650 Hz Ch 4 = 3000 Hz Values Measured on the Receiver Measurements Standard Measured Values Values Installation Maintenance 1 Supply voltage, measured between pins 13.8 VDC ± 10% 1-2 of MS2 with battery disconnected. (*) 2 Signal detection voltage measured with MRW01 (position 2) 6 VDC ± 10% steady 3 AGC voltage measured between pin 14 of 2.5-6 VDC J3 and GND (**) 4 Threshold voltage measured between pin 8 0.25-6.5 VDC of J3 and GND (***) 5 Modulation channel selected - Ch 1 = 2000 Hz Ch 2 = 2300 Hz Ch 3 = 2650 Hz Ch 4 = 3000 Hz Ch 1 = 2000 Hz Ch 2 = 2300 Hz Ch 3 = 2650 Hz Ch 4 = 3000 Hz (*) This measurement can also be done using the MRW01 instrument (position 1) (**)This measurement can also be done using the MRW01 instrument (position 3) (***)This measurement can also be done using the MRW01 instrument (position 4) Installer Comments Date of installation: Installer s signature: 20 MRW 50-100-200 Installation Manual