Teledyne 3000 Ultra Trace - PPB oxygen analyzer - Manual (Page 28)

3 Installation Model Ultra Trace 3000
3-6 Teledyne Analytical Instruments
contact connections. The contact connections are shown in Table 3-2. They
are capable of switching up to 3 amperes at 250 V ac into a resistive load.
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.
Table 3-2: Alarm Relay Contact Pins
Pin Contact
45 Threshold Alarm 1, normally closed contact
28 Threshold Alarm 1, moving contact
46 Threshold Alarm 1, normally open contact
42 Threshold Alarm 2, normally closed contact
44 Threshold Alarm 2, moving contact
43 Threshold Alarm 2, normally open contact
36 System Alarm, normally closed contact
20 System Alarm, moving contact
37 System 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.