IDU (all models) Alarm Connector Appendix OWinLink™ 1000 User Manual Release 1.9 O-3IDU (all models) Alarm ConnectorThe IDU Alarm interface is a 25 pin D type female connector. Its pinout islisted in Table O-6.The figure below, shows how to connect external input and output alarms.Ground 3Ground 4Table O-6: IDU Alarm Connector (Dry-Contact)I/O Description PinInput 1 Positive 14Input 1 Negative 15Input 2 Positive 16Input 2 Negative 17Input 3 Positive 18Input 3 Negative 19Input 4 Positive 20Input 4 Negative 21Output 1 Normally Open 1Output 1 Common 2Output 1 Normally Closed 3Output 2 Normally Open 4Output 2 Common 5Output 2 Normally Closed 6Output 3 Normally Open 7Output 3 Common 8Output 3 Normally Closed 9Output 4 Normally Open 10Output 4 Common 11Output 4 Normally Closed 12Note• Use an external current limit resistor to limit the current at the outputrelays to 1 Amp. Such resistor is not required if the equipment con-nected to the IDU supports current limiting to 1 Amp.• The voltage of the input alarm must be within the range of -10 to -50VDC.Table O-5: Hot Standby RJ-11 Port PinoutSignal Pin
