Operating Instructions

Chapter 4 – Troubleshooting
External Alarm Output Check
To check if the External Alarm Output is functioning properly, follow these steps.
Equipment Required
•
•
Multimeter (digital or analog)
Portable Operator’s Terminal (POT) and cable.
1. Connect the POT to the monitor’s communication port. If you are unable to
establish communication with the monitor, contact your local Siemens Building
Technologies representative.
2. Turn the meter on and set it to monitor resistance (ohms, Ω).
3. Select the DP MONITOR report from the Reports Menu.
4. Scroll so that the display shows RELAY MODE (Point 27), ALARM STATUS
(Point 26), and ALARM OUT (Point 50).
SEN0206R1
+
-
++
--
PIN# 1 2 3 4 5 6 7 8 9 10 11 12 13 14
External
Alarm
Figure 5. External Alarm Output Point.
Siemens Building Technologies, Inc. 21