Teledyne BDS-3960 - Oxygen analyzer - Manual (Page 36)

Installation BDS 3960
Teledyne Analytical Instruments 36
Threshold Alarm 2:
• Can be configured as high (actuates when concentration
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 defeated.
Actuates if communication with PPC fails.
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.