Raytheon IDS M3-VHF-136 110W VHF BASE STATION User Manual USERS MANUAL POWER SUPPLY
JPS COMMUNICATIONS, INC. 110W VHF BASE STATION USERS MANUAL POWER SUPPLY
Contents
USERS MANUAL POWER SUPPLY
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| Document ID | 1676156 |
| Application ID | bD47yVd7VTdDwQnLdhnKQg== |
| Document Description | USERS MANUAL POWER SUPPLY |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 26.65kB (333069 bits) |
| Date Submitted | 2012-04-13 00:00:00 |
| Date Available | 2012-04-13 00:00:00 |
| Creation Date | 2011-12-27 12:50:58 |
| Producing Software | Adobe PDF Scan Library 2.3 |
| Document Lastmod | 2011-12-27 12:54:36 |
| Document Title | USERS MANUAL POWER SUPPLY |
| Document Creator | PFU ScanSnap Manager 4.2.14 |
MM22315, Rev. B 4. INSTALLATION The MASTR lll PSI030I0 series Switching Power Supply is designed for MASTR Ill stations with 26VDC Power amplifiers. Before installation verify that the station‘s RF Power Amplifier is designed to operate with a nominal 24VDC power supply Figure 4-I, Figure 4-2, and Figure 4-3 show the front and rear panel views of PSIOSOIOVIZO and PSI030IOV240. The power supplies are identical in design‘ with exception of the front panel service receptacles found only on the PSIO30IOV I 20. Insure that ventilation holes in the unit are not obstructed when the unit is mounted and note Operational. Ensure [hat the RF Power Amplifier input voltage rating matches the rating or the Switching Power Supply before installing the unit. Severe damage may occur to the CAUHON station and the Power Supply ifratings do not match. WARNING Figure 4-3: Rear Panel View. PSlOJGIflVIZO and V240 10 MM22315, Rev. B 4.1 INSTALLATION PREPARATION Installation and service is simplified through the use of connectors and common hardware components. During installation L-Brackcts are installed to suppon the rear of the Switching Power Supply. FM I03 I77VI brackets are used to suppon the supply in 69" and 83" indoor cabinets. and the Open Rock. FMI03177V2 brackets are used to support the supply in 37" indoor cabinets. Determine the type of cabinet and install the appropriate support brackets as shown in Figure 4-4 and Figure 4-5. TOP VIEW Figure 4-5: Mounting Bracket Configurations. 69/83” Indoor Cabinet und Open Rock 11 MM22315, Rev. B 4.2 4.3 RACK LOCATION When locating new equipment in rack mount assemblies it is important to follow all specified installation procedures to achieve proper air flow. wiring harness requirements. and maintain system integrity. Figure 4-6 provides rack mounting infonnntion to be followed when replacing the l9AI49979l’l power supply with a PSI030IOVI20 Switching Power Supply. The new supply should be mounted to the upper most rack position in the cabinet or open rail station. New installations should be installed as specified in the product‘s application assembly instructions. if m: i no mums w your 5 mm m: ms 3 nu, ma sown. rosrrounnntcmorntrnpmwun. mouse, own-on is memo n we mm m FRONT VIEW MN nooks mm run mm Figure 4-6: Rack Mount Location WIRING INSTALLATION Be sure that the main AC power cord is unplugged from the AC mains and that no AC or DC power is present. Make sure the ON/OFF switch on the front panel is in the OFF position. Determine the proper mounting location for the power supply within the rack (refer to the appropriate base station manual). Attach the cable from the RF Power Amplifier to FBOIA on the rear panel. Next connect the DC Power Cable from the station T/R shelf to J80I on the rear panel. lf utilizing the battery backup option. install the battery cables to the battery while observing proper polarity ol'nll connections. Route the cables into the station as necessary but do not connect the battery to the power supply at this time. Remember to always follow general safety practices when working around high voltage and current power devices. Always remove any jewelry and wear safety goggles! The backup battery network is a nominal 24VDC system. DO NOT attempt to connect a battery network rated less than 24VDC nominal. Typically this network of batteries consists of a minimum of two~I2VDC batteries connected in series, or four-6VDC CAUTION batteries connected in series Install the AC Power Cord to J802. Do not plug the AC power cord into the AC power source at this time. Be sure all cables are routed to prevent strain and damage to the connectors. 12 MM22315, Rev, B 4.4 4.5 4.6 Once the Power Supply is mounted, it may be difficult to access the rear panel connections. Ensure that all connections are secure prior to mounting the power supply. RACK INSTALLATION Installation and service is simplified through the use of connectors and common hardware components. Aficr installing the suppon brackets to the rear of the Switching Power Supply. and connecting all associated wiring, install the power supply assembly into the cabinet as shown on the Assembly Diagram. AA56-HRB 104 26. Sheet 2 and Sheet 3. found in the rear ofthis manual. BATTERY BACKUP Many choices exist when it comes to choosing the right battery for your specific application. Issues such as life expectancy. required periodic maintenance, Amp-Hour capacity. recharging life cycles and cost are just a few or the factors that go into choosing the right battery for the job. Three basic varieties of batteries are widely used for battery backup systems; Staning, Deep Cycle and Deep Cycle Marine. Funher choices within Ihesc types of batteries include Wet Cell. Sealed Cell. Gel Cell, and various low maintenance designs. In general, “Starting" batteries are designed for short duration-high current applications such as when cranking an automobile. This type battery usually suffers a significantly reduced life cycle when "fully discharged“ patterns of use occur. "Deep Cycle" batteries are designed to deliver a continuous current supply and survive repeated "fully discharged" patterns. “Deep Cyclc Marine" batteries combine the advantages and disadvantages of both Starting and Deep Cycle batteries. Several general rules can be applied to estimate the charge timc ol'a lead acid battery system. There is almost a IOO% conversion of electrical energy to stored chemical energy for the first 80% of a battery‘s charging capacity. lI' usable capacity is defined to be at least 80 % of full charge, then the time to reach usable capacity is: T = 01! x AH/C, where T is in hours. AH is in Amp-llours. and C is the average charge rate in amps. To charge the remaining 20 % to a full charge takes longer because the electrical energy is no longer close to I00 % conversion to stored chemical energy. The time to a fully charge a typical battery network can be estimated as, T = Li x AH/C. where again T is in hours, AH is in Amp— Hours. and C is the average charge rate in amps. Using this formula to estimate for a five amp charger. a standard 50 Amp-Hour battery network would recharge in I I hours. Estimates can be provided for air time for a MIll station. Assuming a worst case scenario ofa 100% transmit duty cycle, the station air time with a 50 Amp-Hour battery would be approximately onc hour and considerably longer fora smaller transmit duty cycle. TEST Careful attention should be given to stations utilizing the backup battery option. Before applying power to the power supply. if battery backup is utilized. verify the float voltage required by the battery manufacturer. Battery manufacturers usually specify a specific fiout voltage with regard to ambient room temperature and other factors. Adjustments should be made in accordance with the data supplied by the battery manufacturer. 13 MM22315, Rev. B 14 A potentiometer for adjusting the float voltage of the battery charging circuit is accessible through an opening in the top cover ofthe power supply assembly. Adjustments should only be made in accordance with the data supplied by the battery manufacturer. Damage may occur if the float voltage is not set per the battery‘s manufacturer specifications. Damage may occur if the float voltage is not set per the battery‘s manufacturer specifications. DO NOT set the battery float voltage above 26.4VDC unless there is supporting documentation from the battery manufacturer. CAUTION The power supply should now be ready to power up and test. Turn on the power supply using the front panel ONIOFF switch. Measurements should be taken at FBOIA and JSOI for proper operation. Detailed descriptions of each connection point can be found in Section 5.2: Adjustments and Connections. If utilizing banery backupt use an insulated 2mm flat tip tuning tool to adjust the float voltage in accordance with installation data supplied by the battery manufacturer. Then carefully connect the battery to J803. After the battery has had a reasonable charge. cycle test the battery backup by disconnecting the AC power input and check for normal station operation. Reconnect the AC power input and check that the station returns back to normal AC operation. Also, the two front mounted 120VAC at 4 Amps max AC receptacles are only available on the PSIOSOIOVIZO, and are intended for use only as convenience outlets for service personnel. The use of these outlets for any other purpose is not recommended or supported by the manufacturer. The two front mounted (IZOVAC version only) service receptacles are only intended for use as convenience outlets for service personnel. Any other use IS NOT recommended. Also. it is not recomtnended to use the PSI03010VI20 in applications above the rated nominal input voltage of 120 VAC. The service receptacles on the front panel are passively connected to the AC input connector via board connections. No over-voltage protection or regulation is provided for the front panel receptacles, Severe damage to equipment connected to the receptacles, and personal injury may occur when the rated input voltage is exceeded. .t WARNING MM22315, Rev. B 5.2 5.1.3 Status Signaling (Alarm Output) Power supply provides a status indicator output. In the event of an AC power or fan failure this output can be used to provide signaling to alarm or status inputs within the MASTR llI Base station. This output is designed to provide a positive feedback loop for alarm inputs. An Alarm status condition could also be generated by a loss ofloop (wiring connections). This status indicator output monitors both the AC input and fan status. When proper AC power is present at the AC Input to the power supply. and the speed monitoring circuitry for both fans are satisfied. 26.5VDC will be present at 1801-7. When no AC power is present at the AC Input 180l-7 has OVDC present. The power supply is protected against over-voltage due to internal regulation failure. The output will latch "OFF" under this condition The fault must be removed and the AC recycled to restore the DC outputs 5.1.4 Ambient Temperature Protection Power Supply operation during conditions in excess of the specified ambient temperature may impair the performance of the power supply. The power supply is protected against operating in ambient conditions in excess of the specified ambient fittings. The power supply outputs will latch "OFF" before any damage OCCUIS. ADJUSTMENTS AND CONNECTIONS The 27.2VDC and I3.6VDC power supply sections have no user adjustments. A potentiometer for adjusting the float voltage of the battery charging circuit is accessible through an opening in the top cover of the power supply assembly and can be tuned using an insulated 2mm flat tip tuning tool. Battery manufacturers usually specify a float voltage with regard to ambient room temperature and other factors. Adjustments should be made in accordance with the data supplied by the battery manufacturer. The rcur panel connections are conveniently labeled as shown in Figure 5-I. Refer to the appropriate station manual for specific hookup instructions. All cable restraints and connector latches should be properly utilized to prevent accidental disconnection of cables. and to further reduce unnecessary stress on the cable and connector assemblies. Any cables or connectors showing signs of damage should be promptly replaced to prevent further damage to the power supply or other associated equipment. 5.2.1 27.2VDC Connection (F801Al Power supply connections FSOIA-I (+Positive) and l’SOIA-Z t-Negative) provide a 27.2VDC at I5 amps connection point This output is typically used to power the RF Power Amplifier in MASTR llI Base Stations. A 30 amp fuse (F2) is used as a secondary safety device in the event that the over-current protection circuit fails to protect the supply and connected equipment. However. the built-in over-current and over- vollage protection circuit is the main protection device for this section of the power supply, and should provide adequate protection from most overload conditions. 16
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