Teledyne 3000PA operating instructions Teledyne Analytical Instruments

3 Installation Model 3000PA

Figure 3-4: Analog Output Connections

Alarm Relays: The three alarm-circuit connectors are spring terminals for making connections to internal alarm relay contacts. Each provides a set of Form C contacts for each type of alarm. Each has both normally open and normally closed contact connections. The contact connections are indicated by diagrams on the rear panel. They are capable of switching up to 3 am- peres at 250 V ac into a resistive load. See Figure 3-5. The connectors are:

Threshold Alarm 1:	• 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).
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.

	Figure 3-5: Types of Relay Contacts
3-6	Teledyne Analytical Instruments