4. Commissioning
MF0150A9A_prel.docx Manual for ION-M23 SDARS 3-Sector Page 35
Alarm Outputs
figure 4-11 Alarm outputs (optocoupler) figure 4-12 Flange connector, 7 poles
The alarm outputs (pins 1 to 4: output with pull-up resistor 5 V / 1 mA; see figure 4-12)
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 (pin 6&7) is specified to 28 VDC / 0.5 A and is protected by a
thermoswitch. In case of exceeding this current between pin 7 and GND, 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 assumes no liability for
damage caused by equipment connected to external outputs or by effects
from such equipment.
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