Teledyne 3220 - Multi-channel oxygen monitor system - Manual (Page 35)

Oxygen Monitor System 3 Installation
Teledyne Analytical Instruments 21
The external audible alarm may be configured to operate in either
the fail-safe (default) mode or the non-fail-safe mode. It may also be
configured to provide either a contact closure (default) or the incoming
line voltage to the external connections. Additionally, the contact
closure can be normally opened or normally closed (when the relay is
de-energized). Tables 3-3, 3-4, and 3-5 summarize the jumper settings
for the external audible alarm configurations:
Table 3-3: External Alarm—Failsafe/Non-failsafe Configuration
Function JP5 Installation
Failsafe Pins 1 & 2
Non-failsafe Pins 2 & 3
Table 3-4: External Alarm—Contact Closure
Function JP4 Installation
Normally Closed (NC) Pins 1 & 2
Normally Open (NO) Pins 2 & 3
Table 3-5: External Alarm—Line Voltage to External Connection
Function JP6 Installation JP4 Installation
Contact closures output Pins 1 & 2 Pins 2 & 3
Incoming line voltage Pins 2 & 3 Pins 1 & 2
The internal audible alarm may be disabled by removing JP17.
WARNING: IT IS NOT RECOMMENDED TO REMOVE JP17
UNLESS THERE IS AN EXTERNAL AUDIBLE ALARM
IN USE. WITH THE JUMPER REMOVED, THE
AUDIBLE ALARM WILL NOT WARN PERSONNEL
ABOUT ALARM CONDITIONS.