Digital Outputs; System 1 Interlock Output (D01); General Fault Output (D02) - Grundfos PHT-N130 Installation And Operating Instructions Manual

7.10 Digital Outputs.

All of the fault outputs can be wired as Normally Closed or Normally Open.
(refer to Connection diagram)
7.11 System 1 Interlock Output(DO1) is activated by all/any of the following alarms:
•
System 1 Low Pressure
•
System 1 High Pressure
•
System 1 Sensor Fault
•
Mains Power failure
These are the conditions under which the boiler or chiller on System 1 must be disabled.
The fault buzzer will cycle between ON for 5 seconds and OFF for 10 seconds continuously until muted by
pressing and holding the OK button for 2 seconds.
7.12 General Fault Output(DO2) is activated by all/any of the following alarms:
•
Pump 1 Over Current
•
Pump 1 Under Current
•
Pump 2 Over Current
•
Pump 2 Under Current
•
Low Water
•
High Water
•
Low Glycol
•
System 1 Flood Protection
•
System 2 Flood Protection
•
System 1 Excessive Consumption
•
System 2 Excessive Consumption
•
System 1 Low Pressure
•
System 1 High Pressure
•
System 1 Sensor Fault
•
System 2 Low Pressure
•
System 2 High Pressure
•
System 2 Sensor Fault
The user may choose to disable the boiler or chiller on System 1.
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