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10. Relay outputs
BB2 has two relay outputs, configurable for Alarm or Cleaning. The relays can be used
as Dry Contacts, 24 VDC output, or Mains AC output by setting jumpers according to
figure 3. We do not recommend using 24 VDC outputs to drive solenoids.
Figure 3. This drawing can also be found on the inside of the front door.
NOTE:
• The relays are a normally open contact. Do not overpower the relay contacts
(see figure 3 for max VA rating per relay).
• Do not use 24 VDC outputs to drive solenoids.
• During set-up, please verify that the relay is not already being used for
another function like flushing or brush cleaning.
• Several solenoid valves may be connected to the same terminal block.
However, the power rating of the relay output must not be exceeded.
11. Connection of external alarm
The relay outputs may be used for external alarms, flushing or brush signals.
1. Set the jumpers CN 3, 4, 5, 6, 7 and 8 to preferred voltage (see Figure 3)
2. Connect the alarm to relay 1 or 2 (see Figure 2)
3. Configure the relay for alarm as shown in the sensor service manual under
“Settings/Alarm Relay”.
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