Procedure #6 - Alarm Relays - Honeywell UDC3500 Product Manual
Universal digital controller
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Also See for UDC3500:
- Product manual (460 pages) ,
- Application note (16 pages) ,
- Instruction (8 pages)
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Troubleshooting/Service
7.6.6 Procedure #6 – Alarm Relays
ATTENTION
If the controller is configured to use the same relay for more than one function, then the
following priority is used to determine how the relay functions: Control Outputs take
precedence over Alarms, which in turn take precedence over Time/Events, which in turn
take precedence over Logic Gate Outputs. For example, if you select the Loop 2 Output
Algorithm as Time Simplex (which uses Relay 3), enable Alarm 3 (which also uses
Relay 3) and configure a Logic Gate to use Relay 3, then the instrument will use Relay
#3 to perform the Time Simplex output and ignore the Alarm and Logic Gate functions.
The prompts for the Alarm Outputs appear whether or not the alarm relays are
physically present or used for some other function. This allows the Alarm status to be
shown on the display and/or sent via communications to a host computer.
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UDC3500 Universal Digital Controller Product Manual
10/05
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Troubleshooting
