Teledyne Trace Oxygen Analyzer, 3000TA-XL-EU operating instructions Pin Contact

3 Installation Model 3000TA-XL-EU

•Can be configured as failsafe or nonfailsafe.

•Can be configured as latching or nonlatching.

•Can be configured out (defeated).

Threshold Alarm 2:	• Can be configured as high (actuates when concen-
	tration is above threshold), or low (actuates when
	concentration is below threshold).
	• Can be configured as failsafe or nonfailsafe.
	• Can be configured as latching or nonlatching.
	• Can be configured out (defeated).
System Alarm:	Actuates when DC power supplied to circuits is
	unacceptable in one or more parameters. Permanently
	configured as failsafe and latching. Cannot be de-
	feated. Actuates if self test fails.
	(Reset by pressing		button to remove power. Then
	press	again and any other button EXCEPT

System to resume.

Further detail can be found in chapter 4, section 4-5.

Table 3-2: Alarm Relay Contact Pins

Pin Contact

45Threshold Alarm 1, normally closed contact

28Threshold Alarm 1, moving contact

46Threshold Alarm 1, normally open contact

42Threshold Alarm 2, normally closed contact

44Threshold Alarm 2, moving contact

43Threshold Alarm 2, normally open contact

36System Alarm, normally closed contact

20System Alarm, moving contact

37System Alarm, normally open contact

Digital Remote Cal Inputs: Accept 0 V (off) or 24 V dc (on) inputs for remote control of calibration. (See Remote Calibration Protocol below.) See Table 3-3 for pin connections.

Zero:	Floating input. 5 to 24 V input across the + and – pins puts
	the analyzer into the Zero mode. Either side may be
	grounded at the source of the signal. 0 to 1 volt across the
	terminals allows Zero mode to terminate when done. A
	synchronous signal must open and close the external zero
	valve appropriately. See Remote Probe Connector. (The –C
	option internal valves operate automatically.)
3-6	Teledyne Analytical Instruments