4 Wiring with
4.3 Function Relays
Operating instructions 05/10 MN05013003Z-EN www.eaton.com 77
4.3 Function Relays
Function relays allow you to simulate the functions of different conventional
control engineering devices in your circuit diagram. easy provides the
following function relays:
Table 9: Function Relays
A function relay is started via its relay coil or by evaluating a parameter. It
switches the contact of the function relay according to its function and the
set parameters.
easy circuit diagram symbol Function Relays
A1, A2 Analog value comparator, threshold value switch (only useful for devices with
an analog input)
C1, CC1, DC1, RC1 Counter relay, up/down counter, high-speed counter, frequency counter
D2, ÄD2 Text, output user-defined texts, enter values
Ö1, Ö2 Time switch, weekday/time
O1, ÄO2 Operating hours counter with limit value entry
T1, TT1, RT1, HT1
X, ?X
Timing relay, on-delayed
Timing relay, on-delayed with random switching
T1, TT1, RT1, HT1
â, ?â
Timing relay, off-delayed
Timing relay, off-delayed with random switching
T6, TT6, RT6, HT6
Xâ, ?Xâ
Timing relay, on/off-delayed
Timing relay, on/off delayed with random switching
T2, TT2, RT2, HT2
ü
Timing relay, single pulse
T3, TT3, RT3, HT3
Ü
Timing relay, flashing
:2, Ä:2 Jump
Y3 Year time switch, date
Z1, Z3 Master reset, central reset of outputs, markers
￫
Current actual values are cleared if the power supply is
switched off or if easy is switched to STOP mode. Exception:
Retentive coils keep their logic state (￫ Section "5.9 Retention
(non-volatile data storage)“, page 181).
CAUTION
The following applies to RUN mode: easy processes the
function relays after a pass through the circuit diagram.The last
state of the coils is used for this. This takes the last status of the
coils into account. Only use the coil of a function relay once.
Exception: When working with jumps, the same coil can be
used several times.
To Next Page
Loading...
