Super Systems 7EK 31080 - Manual (Page 26)

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Hbd Threshold value for out 1 break down alarm
This parameter is skipped if P10=OFF.
Range: From 0 to Full scale value (see P11).
Function: see "Out 1 failure detection".
Note: The threshold resolution will be equal to
0.1 A for range up to 20 A and 1 A for range
from 21 A to 100 A.
The hysteresis of this alarm is fixed to 1% of fsv
SCA Threshold value for OUT 1 short circuit
alarm.
This parameter is skipped if P10=OFF.
Range: From 0 to Full scale value (see P11).
Function: see "Out 1 failure detection".
Note: The threshold resolution will be equal to
0.1 A for range up to 20 A and 1 A for range up
to 100 A.
The hysteresis of this alarm is fixed to 1% of fsv
rnP Control output maximum rate of rise
This parameter is skipped if Pb=0 (ON/OFF
action)
It is programmable from 1% to 25% of the
output per second.
Above the 25%/s, the display will show "InF"
meaning that no ramp is imposed.
ERROR MESSAGES
OVERRANGE, UNDERRANGE AND SENSOR LEADS
BREAK INDICATIONS
The device is capable to detect a fault on the process
variable (OVERRANGE or UNDERRANGE or SENSOR
LEADS BREAK).
When the process variable exceeds the span limits
established by configuration parameter P 1 an
OVERRANGE condition will be shown on the upper
display as in the following figure:
An UNDERRANGE condition will be shown on the upper
display as in the following figure:
When P41 is different from zero and an out of range
condition is detected, the instrument operates in
accordance with P41 and P42 parameters.
When P41 is equal to 0 the following conditions may
occur:
- The instrument is set for one output only and an
OVERRANGE is detected, the OUT 1 is forced to 0 (if
reverse action) or to 100 % (if direct action).
- The instrument is set for heating/cooling action and an
OVERRANGE is detected, OUT 1 is forced to 0 and
OUT 2 is forced to 100 %.
- The instrument is set for one output only and an
UNDERRANGE is detected, the OUT 1 is forced to
100 % (if reverse action) or to 0 (if direct action).
- The instrument is set for heating/cooling action and an
UNDERRANGE is detected, OUT 1 is forced to 100 %
and OUT 2 is forced to 0.
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