Varec 4000 manual ATT Family of Products, Model 4040 Display Unit

4000 ATT Family of Products

8 ATT Family of Products

The ATT product family consists of the 4000 ATT, the Model 4040 Display Unit, and the Model 4050 Digital Input/ Output Unit.

Model 4000 ATT

Model 4000 mounted to Float Gauge

24-65 Vdc for EIA-485
48-65 Vdc for Mark/Space
65 Vac for TIWAY
48-65 Vac for Whessoe Bus
Connection to host
computer system via:	Connection to spot
4-Wire Mark/Space	temperature bulb
Matrix Mark/Space
TIWAY
Whessoe Bus	Three wire
GPE
	ATTI Bus
L&J
Handheld Interface
connects to any unit
for system configuration
	Model 4040
	Display Unit

Model 4050

Digital I/O Unit

Connection to four digital inputs and four digital outputs

Figure 8-1: ATT Family of Products

8.1Model 4040 Display Unit

The Model 4040 is a four line LCD display unit. It operates connected to and is powered from the ATTI bus. The Unit is mounted in a round explosion proof junction box with a window. Two 3/4-inch conduit entries are available.

Configuration is performed with the handheld interface. The handheld interface can be connected to any point on the ATTI bus to communicate with the Model 4040. The user may select any of the following parameters for display on each of the three lines.

•Level (default)

•Temperature (RTD - default, or Average)

•Status (default)

•Digital I/O Unit 4, 5 or 6

•Input 1-2-3-4

•Output 1-2-3-4

•Analog I/O Unit 7, 8 or 9

•Input 1-2-3-4

•Output 1-2-3-4

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