Dwyer SCD Uživatelský manuál stáhnout pdf (Strana 5)

Figure 7: Retransmission

Output

10V or 20mA

0V or 4mA

PV Low PV High

Output slope

is negative

Output

PV Low

PV High

PV PV

Output slope is positive

10V or 20mA

0V or 4mA

Alarm Output:

This controller provides 12 types of alarm outputs (See table below). When PV is higher or lower than SV, the

alarm output will be enabled.

SV Alarm Type Alarm Output Function

0 No Alarm Function Output is OFF

Deviation upper- and lower-limit:

This alarm output operates when PV value is higher than the setting

value SV+(AL-H) or lower than the setting value SV-(AL-L).

OFF

AL-L

AL-H

Deviation upper-limit:

This alarm output operates when PV value is higher than the setting

value SV+(AL-H).

OFF

AL-H

Deviation lower-limit:

This alarm output operates when PV value is lower than the setting

value SV-(AL-L).

OFF

AL-L

Reverse deviation upper- and lower-limit:

This alarm output operates when PV value is in the range of the setting

value SV+(AL-H) and the setting value SV-(AL-L).

OFF

AL-L

AL-H

Absolute value upper- and lower-limit:

This alarm output operates when PV value is higher than the setting

value AL-H or lower than the setting value AL-L.

OFF

AL-L

AL-H

Absolute value upper-limit:

This alarm output operates when PV value is higher than the setting

value AL-H.

OFF

AL-H

Absolute value lower-limit:

This alarm output operates when PV value is lower than the setting

value AL-L.

OFF

AL-L

Deviation upper- and lower-limit with standby sequence:

This alarm output operates when PV value reaches set point (SV

value) and the value is higher than the setting value SV+(AL-H) or

lower than the setting value SV-(AL-L).

OFF

AL-L

AL-H

Deviation upper-limit with standby sequence:

This alarm output operates when PV value reaches set point (SV

value) and the reached value is higher than the setting value

SV+(AL-H).

OFF

AL-H

Deviation lower-limit with standby sequence:

This alarm output operates when PV value reaches the set point (SV

value) and the reached value is lower than the setting value SV-(AL-L).

OFF

AL-L

Hysteresis upper-limit alarm output:

This alarm output operates if PV value is higher than the setting value

SV+(AL-H). This alarm output is OFF when PV value is lower than the

setting value SV+(AL-L).

OFF

AL-H

AL-L

Hysteresis lower-limit alarm output:

This alarm output operates if PV value is lower than the setting value

SV-(AL-

H). This alarm output is OFF when PV value is higher than the

setting value SV-(AL-L).

OFF

AL-H

AL-L

Attention: AL-H and AL-L include AL1H, AL2H and AL1L, AL2L. When the 1

group output is set to alarm output, AL1H (1024H) and AL1L

(1025H) will be used. When the 2

group output is set to alarm output, AL2H (1026H) and AL2L (1027H) will be used.

1 2 3 4 5 6 7 8 9 10

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