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6. Function blocks
6.1 Manufacturer function blocks
If you wish to control the pulse duration with a signed value you will have to normalize
this value first of all with an LS value scaling function block.
If the actual value specified via SV for the pulse duration is shorter than the minimum on
duration, the output at Q1 or Q2 is accordingly 0. The status of the PW..E1 contact must
be observed.
If the off duration of the pulse at the output is less than the minimum off duration, Q1 or
Q2 are permanently on. The status of the PW..E1 contact must be observed.
Parameter limits for period duration and minimum ON duration
Period dur-
ation [ms]
Minimum On
duration [ms]
Note
Base device
EASY-E4-UC-...
Min. zz
Max. 65535
Min. zz
Max. 65535
Period duration
When the value is
0, no pulses are out-
put at Q1 and Q2.
minimum contact
closing time
Can be selected
within the valid lim-
its
EASY-E4-DC-...
Min. zz
Max. 65535
Min. zz
Max. 65535
EASY-E4-AC-...
Min. zz
Max. 65535
Min. zz
Max. 65535
Table 63: Parameter limit values for period duration and minimum on duration
Minimum period duration PD
The minimum period duration is 5 ms.
Minimum contact closing time ME
The minimum on duration is limited to zz (100) µs when a very low manipulated variable
is set at input SV.
Minimum on duration = Minimum off duration
The above hardware restriction also applies to the minimum off duration if a very high
manipulated variable at input SV generates a correspondingly long pulse duration. If a
large mark-space ratio of this kind is almost as long as the period duration, the min-
imum off duration is 100 µs.
If the duration is below the set minimum on duration or minimum off duration, the
Boolean control output E1 is set to 1. This control output E1 is used for monitoring during
commissioning and does not have to be connected.
easyE4
11/18 MN050009 EN www.eaton.com
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Содержание easyE4 series
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Страница 22: ...0 1 About this manual 18 easyE4 11 18 MN050009 EN www eaton com...
Страница 40: ...1 easyE4 control relays description 1 10 Safety regulations 36 easyE4 11 18 MN050009 EN www eaton com...
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Страница 462: ...6 Function blocks 6 4 Timing and counter relay example 458 easyE4 11 18 MN050009 EN www eaton com...
Страница 490: ...7 System settings 7 16 Time and Date setting 486 easyE4 11 18 MN050009 EN www eaton com...
Страница 520: ...9 easyE4 inside 9 7 NET network 516 easyE4 11 18 MN050009 EN www eaton com...
Страница 524: ...10 Diagnostics messages of the operating system 10 2 Diagnostics buffer 520 easyE4 11 18 MN050009 EN www eaton com...
Страница 570: ...11 Connection to other devices 11 6 E mail function 566 easyE4 11 18 MN050009 EN www eaton com...
Страница 578: ...12 Faults 12 4 Functionality of the NET faulty 574 easyE4 11 18 MN050009 EN www eaton com...
Страница 582: ...13 Maintenance 13 3 Storage transport and disposal 578 easyE4 11 18 MN050009 EN www eaton com...
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