4 Alarms
Page 39
4.5. EXTERNAL ALARM INPUTS AND OUTPUTS
G1038Z0
G1038Z0
figure 4-1 Flange connector, 5 poles figure 4-2 Flange connector, 7 poles
The alarm outputs (open collector output 5 V / 1 mA) are normally low. In case of an
alarm they are high active (5 V). They can be used to monitor alarms with an external
alarm indicator.
The +28 V pin (for its location see figure 4-2 Flange connector, 7 poles) is protected
by a 500 mA thermoswitch. In case of exceeding this current between pin 7 and GND
and/or in case of a failure of the VSWR module, the thermoswitch turns into a high-
resistive status. In this case no fuse needs to be replaced. Just wait a few minutes
until the thermoswitch reaches the normal operating temperature again.
) Note: The manufacturer / supplier of this system accepts no liability for
damage caused by equipment connected to external outputs or by
effects from such equipment.
As accessory equipment the alarm kit is available to connect external devices to the
external alarm inputs and outputs. For the exact designation, please refer to chapter
6.3 Spare Parts.
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