ECD 15B / 40B / 90B / 150B - Installation and operating manual
9
Operating modes
NORMAL
When sensor detects condensate the valve opens up to one second to discharge. The exact
period depends on type of a drain. Minimal time between two discharges is 5 seconds.
OVERLOAD
If sensor detects condensed water continuously for 90 seconds, drain enters overload mode.
In this mode, the valve is opened longer and the time between discharges is shorter.
Therefore, the amount of discharged condensate is doubled. This mode lasts for five
minutes. In case the reservoir empties during overload mode, the drain enters normal mode
again. Otherwise, it goes into alarm mode.
ALARM
If drain was still not able to discharge all condensate it enters alarm mode. In this mode, the
valve is opened for five seconds every half minute. In case the reservoir empties during
alarm mode, drain enters normal mode again.
Alarm output
The ECD comprises an alarm output that is voltage free. The output is connected to the red
signal logically. The output is in high impedance state when the red LED is on or when ECD
electric supply is off.
Alarm
Red
LED
Alarm XA
U
OUT
I
OUT
(I
out
max 20mA)
(U
out
max 24V)
