Page 7 - ABB_Signal-Easy-solutions

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Operating principle of the control units

Control units FEH1001 and FEH1002 FE FHE1H0 102002 Alarm
contain a separate reset button and 4 Ala1rm 2
indicator light for each loop. During an Voltage 12
alarm, the indicator light flashes and is Output
acknowledged or disconnected. The Voltage 43 nc Potential-free
indicator light can be tested using the ncc Contact
reset button. The function selector in Output 32 cno Potential-free
the unit allows the loop to be set to two no Contact
modes; memorizing or non-memorizing 1kΩ 21.1
(ON/OFF). 1 k Ω1 k Ω Operating
Voltage
When the unit is set to “ON”, the alarm 1.1.2 OV11op58le--t23ar85agtVVeinadcgc
remains on until it is acknowledged 1kΩ 15-28 Vac
with the reset button. With the second 18-35 Vdc
function selector, the alarm delay can Loops 1.2
be set to either 0.2 or 2 seconds.

Loops

FEH2001 operates on a similar principle Reset
Reset
to the control units described above.
FEH 2F0E0H12001
The main exception is that it does not

have its own reset button. Instead it

has its own input for this purpose. By

connecting one or more buttons to this Voltage 4 Operating
connector, alerts can be reset remotely Voltage
or from multiple points. The unit can be Output 3 15-28 Vac
disengaged by using a switch instead O1p8e-3r5atVindgc
of a button. The product also has a Voltage 4 nc Voltage
large red indicator light and buzzer. Output 2 c 11PC85o--o23tn85etnaVVtcaditaccl-free
During an alarm, the indicator light will 1kΩ 3 nnco Potential-free
flash and the buzzer is sounded. Once 11.1 c Contact
acknowledged or disconnected, the 1kΩ 210.2 R no
indicator light remains on without 11.1 R
flashing, and the buzzer stops. 0-2: Reset 1-2: Loop

10.2

The unit also has a function selector

for the loop’s memory settings. 0-2: Reset 1-2: Loop