Eaton PROFIBUS-DP EZ204-DP User Manual Page 93

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Working with contacts and relays
For more information visit: www.EatonElectrical.comMN05013003E 89
Coil functions
You can set the coil function to determine the switching
behavior of relay coils. The following coil functions are
available for relays Q, M, S, D, “:”:
Table 7: Coil function
Marker relays M and N are used as a flag. The S relay can be
used as the output of an expansion unit or as a marker if no
expansion unit is connected. The only difference between
them and the output relay Q is that they have no output
terminals.
Circuit diagram
symbol
EZ
display
Coil function Example
Ä Contactor
function
ÄQ1, ÄD2, ÄS4,
Ä:1, ÄM7
Å Contactor
function with
negated result
ÅQ1, ÅD2, ÅS4
è Cycle pulse with
falling edge
èQ3, èM4, èD8,
èS7
È Cycle pulse with
rising edge
ÈQ4, ÈM5, ÈD7,
ÈS3
ä Impulse relay
function
äQ3, äM4, äD8,
äS7
S Set (latching) SQ8, SM2, SD3,
SS4
R Reset
(unlatching)
RQ4, RM5, RD7,
RS3
J
The coil functions of the function relays are described in the
descriptions for the appropriate relays.
EZ500_700.book Page 89 Tuesday, May 3, 2005 5:15 PM
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