_________________________________________________________________________________________________________________________________________________________ MICRO PROCESSOR CONTROLLER/TIMER In addition to the features of an ordinary week/day switching clock, this jewel of a controller allows controlling independant temperatures through one or all four of its outputs. For every temperature to be measured (up to 4) a separate sensor K6001 or K6003 is required, which allows to install the controller itself distant from the measuring point.
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_________________________________________________________________________________________________________________________________________________________ ASSEMBLY A) Assembly of the keyboard module P6000S - Fit D5 through D9, 1N4148 type small signal diodes or equivalent. Pay attention to the polarity! - Fit the push buttons SW1 through SW5, with their bodies AGAINST the pcb. ATTENTION: Don't warm up the terminals of the push buttons too long, because this might damage the push buttons irreparably! B) Assembly of the basic module P6000B...
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_________________________________________________________________________________________________________________________________________________________ Fit the 4K7 resistor network RA1. Such a network consists of nine resistors connected together at one end and accomodated in one single housing. The common is marked with a notch, a dot or a stripe, and must correspond with the hole marked "C". Fit 2 pcb pins for GND and TP Fit the following transistors: T1 through T5, BC547 type or equivalent.
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_________________________________________________________________________________________________________________________________________________________ Apply an extra layer of solder to the soldered copper traces. Connect the 9V battery holder (when not using a NiCd battery) to the - points (black wire) and to one of the two + holes (red wire) of E1. Fit the 12V/100mA transformer TRANSFO 2.
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_________________________________________________________________________________________________________________________________________________________ Fitting the display onto the basic module LCD MODULE M2.5 BOLT INSULATING SLEEVE 5mm SPACER SOLDERSIDE M2.5 NUT P6000B Check that, where the display has to be fitted, the solder points on the basic pcb are cut short. BE SHURE TO CUT the solder points from SW6!. Fit the display at the solder side of the basic pcb using four M2.5 bolts together with four 5mm spacers and an additional insulation ring.
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_________________________________________________________________________________________________________________________________________________________ Remedies in the case of malfunction caused by the relays If the relays are used to switch alternating voltage, it may be necessary to suppress them. Figure 5.1 shows how to suppress resistive loads (lamp, resistor, ...), Figure 5.2 shows how to suppress inductive loads (transformer, motor, ...) and figure 5.3 applies in case all the above solutions fail.
_________________________________________________________________________________________________________________________________________________________ ADJUSTMENT ATTENTION: WHEN THE CIRCUIT IS POWERED ON, A LOT OF POINTS CARRY DANGEROUS MAINS VOLTAGE. As the clock of the controller must continue working during a power failure, we opted for an oscillator based clock built round a crystal and a devider. The disadvantage of this system versus a 50Hz mains time base is that it has to be adjusted.