Rauland 2401Cc Oscillator 电路图.pdf

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1、Crystal-Controlled Installation KI-1615 RAULAND-BORG CORPORATION l 3450 West Oakton Street, Skokie, Illinois 60076-2951 l (708) 679-0900 Description 2401CC is provided with the hardware needed to mount it nearby and connect it to the 2490. The Rauland Model 2401CC module may be added to any 2424 or

2、2490 Master Clock or 2480 Programmer in Unpacking or for wall-mount installations (2424WN), construe “top” as “back,” and “back” as “bottom.” Step 1. Remove the five screws securing the back panel, then set them and the panel aside. Step 2. Locate Terminals T3 and T4 on the Zone Relay Module (ZRM) b

3、oard (as you face the back, they are about one-half inch behind the leftmost screw terminal, 1A). Using a screwdriver or a similar tool, short together T3 and T4, taking care not to short anything else. LED Dl3, which is half an inch further in, should light: this confirms that 01969 RAULAND-BORG CO

4、RPORATlON l Printed in U.S.A. Orig. 6/89. Relay RY9 is unlatched and, hence, that the battery is disconnected. Note: An earlier model, 2424B, has a separate battery- disconnect module, whose terminals are labeled “Tl” and “T2,” and whose LED, labeled “D4,” is right next to them. Step 3. Unplug the m

5、aster clock to disconnect the AC power. Step 4. Remove the screw securing the vertical support bracket at the back of the printed circuit boards, then set the screw and the bracket aside. Find Terminal Z on the right side of the ZRM board. If it has a wire coming from the DPU board, disconnect that

6、wire. Page 1 of 4 RadioFans.CN 收音机爱 好者资料库 2401CC Crystal-Controller Oscillator Step 5. Pull out the Display Processing Unit (DPU) board, set it on a suitable work surface, and orient it so that you can read most of the screening. Note: Alternatively, you may find it easier to remove the top cover, w

7、hich will enable you to work on the DPU board without removing it. Step 6. Cut zener diode D1 (it is near the left side of the DPU board, to the left of IC2 and to the immediate right of tantalum capacitor 67). Set the DPU board aside. Step 7. Carefully pull the ZRM board part-way from the 2424 chas

8、sis, until you can access the “BATTERY” ter- minals (next to LED D13). Pull the connector from these terminals, then pull the connector from the nearby “TRANSFORMER OUTPUT terminals, If the clock has a 2400IP Instruction/Monitor Panel, unplug its connector from the “OUTPUT terminal strip (centered n

9、ear the large relays), Remove the board from the clock chassis. Step 8. Orient the ZRM board with the screw terminals towards you, then place the board on a suitable work surlace. Cut Jumper J1 (it is to the left of the row of resistors above IG?) . Step 9. Orient the white PCB supporter with its sh

10、orter stake (the one on the concave side of the curved flanges) downward. Handle this part gingerly: it could break. Insert the shorter stake into the small hole that is inside the three-inch square screened on the upper right section of the board. of the chassis. Reinstall the following connectors

11、onto the board s pin terminals: a. If the clock is equipped with the 2400IP panel, push its connector onto the “OUTPUT” terminal strip. The black edge on the ribbon cable should be oriented to the left (the side of the terminal strip with pin “C”). b. Push the transformer connector onto the “TRANS-

12、FORMER OUTPUT terminal strip; so long as the four holes in the connector mate with the four pins, the connector may be oriented in either direction. c. Push the battery connector back onto the ZRM board s “BATTERY” terminals. The connector is keyed. Step 13. Push the back of the board firmly to ensu

13、re that its front edge connector is fully seated in the cor- responding terminals on the Clock Control Panel (CXP). Step 14. Replace the DPU board in the clock chassis (if you removed it in Step 6), taking care to properly align the board with the mounting tabs and to fully seat the front edge conne

14、ctor with the corresponding terminals on the CXP. If there is a ground wire coming from the middle of this board, reconnect it to Terminal Z on the ZRM board. Step 15. Replace the vertical support bracket and tighten its screw. Step 10. Place the 2401CC module on a suitable work surface and cut Jump

15、er JUl (the jumper is under the connectors, to the left of the IC chip). The failure to cut this jumper could cause the 2401CC to draw excessive current from the 2424; among other things, this could overload the power supply of the master clock and cause it to malfunction. Step 16. Test the installa

16、tion by plugging the master clock into an appropriate AC power source and entering an event for a diiTerent time from what is shown on the display. If the master clock accepts this entry (and does not reset back to 08: 00 am), then both the installation and the 240lCC itself are probably okay. After

17、 completing this test, make sure that LED 023 is off, then short Terminals n and T4 together with a screwdriver or similar tool. After making sure that LED 013 is now lit, unplug the clock again. Step 11. Orient the 2401CC module inside the square Step 17. Replace the back cover with its Eve screws.

18、 If on the ZRM board so that its components face upwards necessary, reinstall the clock in its enclosure (rack, turret, and its connector is aligned with the 12-pin terminal strip. etc.), consulting the appropriate installation manual (KI- Carefully push the module onto the terminal pins and the 131

19、6 for the 2424NU, RI-1332 for the 2424WN). PCB supporter until the board is firmly seated. Step 18. Restore AC power. Since the 2424 s memory Step 12. Slide the ZRM board about two-thirds of the is cleared whenever all power is removed, you will need way back into the clock chassis, taking care that

20、 the edges to reprogram the clock. Refer to KI-1316, the main manual of the board are properly aligned with the mounting tabs for the 2424 series. .:;/ / -.+ to avoid awkwardwording, the The location should: following steps mention only the 2490. The 2490 Master Clock must be modified to work with 4

21、 be close to the 2490 Master Clock; I the 240lCC. The latter must be mounted externally. On 4 lie clear of all of the clock parts and connections so a standard 2490 clock, the oscillator module will be that it will not interfere with any servicing needs; electrically connected via wires from its fou

22、r-pin terminal v have nothing protruding that could cause a short; strip to a corresponding terminal strip inside the master and clock (as viewed from the back of the 2490, these ter- 4 have an operating temperature that falls within the minals are just inside a special slot in the back panel and ra

23、nge specified for the oscillator module (68” F to the top cover, about an inch to the left of the “ZONE 1” 86” F-20” C to 30” C). screw terminal). On 2490s that have a battery back-up, the wires will run from the 2401CC to the back-up Step 2. Using the module as a template, mark four module. #22-AWG

24、 solid wire is recommended for wire- points on the surface that are centered on the four wrapping. module stand-offs. To use the supplied machine screws ., to use thread-forming screws, such as Rauland s WA7 #6 x K” hex-head screws (not supplied), drill four .120-inch- diameter holes (#3 1 drill). S

25、tep 3. Line up the module with the holes, make sure that nothing will create a short with it, and secure it with the hardware selected. Step 4. If the master clock has a battery back-up, pull its connector off the “BAT” pin terminals on the back-up module. Step 5. Unplug the master clock. If necessa

26、ry, remove the clock from its rack or other enclosure to gain access to its interior components. Step 6. Loosen, but do not remove, the two screws that secure the top cover of the clock to its back panel, pull up on the rear of the cover to disengage it from the screws, then remove it by pulling it

27、backwards. Step 7. Modify the 2490 by removing Jumper J3 loom its printed circuit board, near the four-pin terminal to which the oscillator or the battery back-up is COnneCted. Step 8. If the clock has a battery back-up connect the 2401CC to the Battery Back-up Module. If it does not, use the follow

28、ing procedure to connect the 2401CC directly to the clock: Use individual wires (not provided): these should be 22-gage solid wires, ideally of three different colors. Cut three lengths that will reach horn the clock to the 2401CC module; be sure to allow extra length for the wire-wrap- ping coetion

29、s. Connect a wire to each of these ter- minals. “C . I ” “+5,” and “2.” Make a note of the color wire used for each connection or, better yet, label the wires. Step 9. Be sure to route the wires or the cable over the slot in the rear panel, then replace the top cover, check for pinched wires, and ti

30、ghten the two screws. If neces- sary, reinstall the clock in the rack or other enclosure, following the procedures in the 2490 manual, KI-1496 (the manual for the 2480 is KI-1430). Step 10. Complete the wiring to the 2401CC. If there is a battery back-up, it is tired from “CONN 1” to the four-pin te

31、 rminal in the master clock, and from “CONN 2” to the 2401CC. If there is no battery back-up, the 2401CC is wired directly to the master clock. Choose the ap- propriate terminals from the following table: Step 11. Reconnect the master clock to its AC power source. If there is a battery back-up, reco

32、nnect the leads from the battery to the “BAT” terminals of the back-up module; be sure to observe the polarity. Step 12. Test the installation by entering the proper time, then waiting a minute to make sure that the time advances normally (should the 2401CC be defective, the clock s display would co

33、ntinue to show the time entered). Step 13. Enter the time and the day, following the procedures in KI-1496, the main manual for the 2490 (or, for the 2480, KI-1430). This is all of the reprogramming that is necessary: even with all power off, the 2490 will retain its event programming. 6/89 Page 3 6

34、-i JUl * L I” “I Z X? AL=2.4576MHz NOTES: c2 1.UNLESS OTHERWISE SPECIFIED, RESISTANCE IS RATED IN OHMS 25%. RESBSTORS ARE l/4 WA?. 2.CAPACITANCE 1s RAPED IN MICROFARADS. pF= PICOFARAD 3. + = CONNECTiON TOCIRCUIT COMMON. 0 000 000 0 0090 J1 I I I I c i COMPONENT SIQE TP J2 6517 MODEL 2401CC CRYSTAL-CONTROLLED OSCILLATOR RAULAND - BORG CORP. SKOKIE,lLL. KC8642 m L .