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47
• Output 1,4 is the blower (fan)
Air Jet which is used to clean lint off of the fan (blower). At the end of a cycle,
the
Air Jet turns on for 30-seconds.
• Output 1,5 is the End of Cycle light. Once the dryer has reached the end of a cycle, the output turns on,
illuminating the
End of Cycle light. The output will turn off once a load or unload command is
asserted on the pendant.
ANALOG INPUT MODULE
The Analog Input Module is used to measure the temperature in the exhaust of the dryer. The Analog Input
Module measures a 4 mA - 20 mA (milliamphere) signal (controlled by the TX58 Resistive Temperature
Device [RTD] in conjunction with the 100Ω (100 ohm) Platinum Resistance Thermometer and converts it to
a corresponding temperature. The RTD has predetermined temperature to resistance characteristics. The
following chart has a few examples;
Fº Cº R
ESISTANCE
(Ω)
230 001
5742901
6803111
9913948.531
The TX58 RTD (Resistive Temperature Device) converts the resistance of the RTD to a 4 mA - 20 mA
(milliamphere) current loop. The current in the loop is equal to .022222 mA/(ºF - 32) + 4 mA (measurement
in celsius [centigrade] is .04 mA/ºC + 4 mA.
Example: 200º F - 32 = 168 x .022222 = 3.73 mA + 4 mA = 7.73 mA
93º C x .04 mA = 3.72 + 4 mA = 7.72 mA
The power source for the TX58 RTD is PS1 (Power Supply 1) is a 24 VDC power supply mounted on the
main electrical panel.
NOTE: There is approximately a 10º F (18º C) differential between the actual and the displayed
temperature on the XBT unit.
TELEMECANIQUE XBT UNIT
The
Telemecanique XBT Unit is the user interface to the dryer. ALL the user commands are loaded into the
XBT unit at the factory. System parameters are stored in the TSX17 PLC (Programmable Logic Controller)
via the XBT unit interface. These are the drying recipes and parameters such as Load Level, Spin Time,
Dwell Time, etc. The power source for the XBT unit is a 24 VDC power supply mounted on the main
electrical panel. A data cable connects the XBT unit to the TSX17 PLC for communication purposes.
HOUR CLOCK
The dryer has a Hour Clock to keep track of how many hours the dryer has been running. The clock runs off
the 24 VAC power supply through a set of contacts on the blower contactor. When the blower contactor
closes, it also closes an additional set of contacts to activate the clock.
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