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Summary of Contents for Time Electronics 5012
- Page 1 5012 Programmable Switch Technical Manual Time Electronics Ltd Unit 11 Botany Industrial Estate Tonbridge, Kent, TN9 1RH Tel: 01732 355993 Fax: 01732 770312 E-Mail: mail@TimeElectronics.co.uk Web Site: www.TimeElectronics.co.uk V2 26/06/03...
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Page 2: Table Of Contents
Replacement of the digital/relay or LED Boards Spare Parts Introduction Guarantee and Servicing Guarantee Period Service after guarantee period Returning instruments All Time Electronics' instruments are subject to continuous development and improvement and in consequence may incorporate minor detail changes from the information contained herein. -
Page 3: Introducing The 5012
5012. Again the LED’s will indicate the selected channels. Another feature of the 5012 is the timing feature. If timing is critical in your applica- tion, delays may be specified before a channel is turned on or off The 5012 is constructed in a standard size 19”... - Page 4 Page 4 Power Requirements You can operate the 5012 from a single phase source rated at 100V A.C., 220V A.C., or 240V A.C. 50/60Hz. Line voltage may vary by up to 10% but must not exceed 250V A.C. The power lead must be wired in accordance with the diagram below.
- Page 5 Page 5 Remove the two large transit screws located on the base of the instrument. Locate the rear support fixings as in Figure 1.2 on the rack and fix using the screws provided. Mount the instrument in the rack, locating the two ‘ears’ in the rear support fixings. Fix the front panel of the unit to the frame using the screws provided.
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Page 6: Switch Connections
Figure 1.3 Switch Connections Connections to the 5012 are made via four 37 way Cannon ‘D’ connectors. Each connector is wired identically and has the contacts of 6 channels. Each channel has two poles with change over contacts as shown in Figure 1.4. - Page 7 Page 7 The switch connections are identical for each connector and are detailed in Table 1.1 and figure 1.5. Wiring details of the 37 way ‘D’ connector is shown in Figure 1.5. To wire channels 7-24, follow the diagram replacing the appropriate channel numbers, i.e. For channels 7, 13 and 19, wire as channel 1 and for channels 8, 14 and 20, wire as channel 2, etc.
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Page 8: Specifications
Page 8 Section 2 - Specifications Interface Interface Type: IEEE-488/GPIB/HPIB Device Address: Rear panel switch 0-31 Bus Connection: Standard 24 pin IEEE-4888 connector Bus Isolation: All switches are isolated from the bus up to 350V. Switch Specification Type: 24 way double pole changeover, break before make. - Page 9 Hexadecimal: Turn on switches by a hexadecimal string. All others turn off. G.E.T.: Sets the 5012 to execute commands after the Group Execute Trigger command has been received. Goto Local: Sets the 5012 into local mode for operation via the front panel.
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Page 10: Operation
Page 10 Section 3 - Operation Introduction The 5012 may be operated in either local or remote modes which is invaluable dur- ing system design or troubleshooting. The LED’s on the front panel indicate which channel has been selected. The data LED will indicate when a command has been received by the IEEE interface or if a key has been pressed in local mode. - Page 11 Cables used on IEEE systems are available in various lengths to suit different layouts. IEC Bus Connections Users wishing to connect the 5012 to a European standard bus (IEC-625), must be aware of the differences in connector pin assignments from the IEEE bus and provide a suitable interface.
- Page 12 Page 12 IEEE-488 IEC-625 Table 3.1 PIN NUMBER STANDARD FUNCTION FUNCTION DIO1 DIO 1 DIO 2 DIO 2 DIO 3 DIO 3 DIO 4 DIO 4 NRFD NDAC NRFD NDAC SHIELD DIO 5 SHIELD DIO 6 DIO 5 DIO 7 DIO 6 DIO 8 DIO 7...
- Page 13 IEEE address is changed it will be necessary to switch the unit off and on again. The 5012 may be made to display its IEEE address from the front panel by enter- ing ‘99’ on the keypad. This will display the DIP switch positions on LED’s 1 to 8.
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Page 14: Commands
The 5012 command string consists of commands from the 5012 Instruction set. These commands will instruct the 5012 to select a channel or other function. Terminating Character All command strings must end with a terminator character for the string to exe- cute. - Page 15 Page 15 The switches can be operated without affecting the current settings by adding a ‘+’ or ‘-’ sign before sending the switch settings. If for example switches 1, 4, 8, and 21 are currently on the command string: 100 IOCTL #2, " - 1; + 6; + 22 " + CHR$ (13) will turn switch 1 off and 6 and 22 on, leaving all the other switches the un- changed.
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Page 16: Data Format Commands
Page 16 CHARACTER RELAYS OPERATED SENT Table 3.2 For example the following line would operate relays 1, 2 and 24. 100 IOCTL #2, "800003" + CHR$ (13) If a terminator character is not received, the unit will ignore all subsequent com- mands until the termination character has been transmitted. -
Page 17: Readback Of Switch Settings
The following simple demonstration program has been written in Microsoft’ Quick- Basic. The following program will allow the operator to send a number to the 5012 which can switch a relay on or off. Delays can also be specified and the switch settings may be read back. -
Page 18: Technical Description
Page 18 Section 4 - Technical Description Introduction This section is a brief introduction to the technical description of the 5012. The 5012 consists of four boards with plug in modules. - The Digital Board The Relay Boards. (2 off) -
Page 19: The Relay Board
Page 19 The IEEE Interface The IEEE interface section is built around the Motorola 68488 General Purpose Interface Adapter (GPIA). The I/O lines of the 68488 are driven through MC3448 drivers. IEEE address selection is by an 8 digit switch whose condition is gated to the uP bus via a 74LS244 tristate buffer, I.C. -
Page 20: Fault Diagnosis
Add additional mains filtering. Fuse Replacement The 5012 has three types of fuse fitted. The mains fuse must be of the 20mm, HBC, Sand filled and ceramic body type. The internal D.C. supplies have two 1A, 20mm anti-surge for the +15V and –15V rails and two 2A, 20mm semi-delay (type T) fuses for the 5V and 5/12V rail. -
Page 21: Replacement Of The Digital/Relay Or Led Boards
Page 21 Replacement of the D.C. Fuses The D.C. fuses are located inside the instrument, on the processor / PSU circuit board, by the mains transformer. Removal of the top cover is only recommended by qualified personnel as live parts are exposed. - Page 22 Unscrew the boards and reassemble with the replacement. Refit the boards in the reverse order. Run the self test to ensure correct opera- tion of the 5012. (i.e. A click should be heard as each relay energises and de- energises.)
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Page 23: Spare Parts
Page 23 Section 6 - Spare Parts Introduction Time Electronics holds a comprehensive list of spare parts in stock. Please contact our Sales Office for prices or for parts not listed. Main Parts Order Code Description 2519 ....Rear Panel Label 7511 .. -
Page 24: Guarantee And Servicing
Section 7 - Guarantee and Servicing Guarantee Period The 5012 is guaranteed against defects in materials and workmanship for a period of one year from its delivery to the customer. We maintain comprehensive after sales facilities and the unit can, if necessary be re- turned to us for servicing.
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