pH 170/
pH 296
Parameterization
142
Relay 1 / Relay 2
(R option)
Limit indicator (UL.LL)
The
PL
submenu enables the allocation of the following values for the relay
occupied by a limit function (UL.LL) in the configuration level:
1.
Limiting value
L (Limit)
2.
Hysteresis
HS (Hysteresis)
3.
Time delay
Td (Time delay)
The
PL
submenu displays only the limit functions (UL or LL) that were
selected in the configuration of the instrument
(configuration level
!
CrF
submenu).
Overview table
:
Nominal
Minimum:
lower measurement range final value (UBE)
Maximum:
upper measurement range final value (OBE)
Setting accuracy:
depends on the meas. value display
Default:
for the upper limits, the maximum,
otherwise the minimum
Hysteresis
Minimum:
0
Maximum:
10% of the measurement range (OBE - UBE)
Setting accuracy:
depends on the meas. value display
Default:
0
Time delay
Minimum:
0 sec
Maximum:
59 min 59 sec
Setting step:
1 sec
Default:
0 sec
Nominal:
Upper or lower limiting value (nominal value) that is set up.
Exceeding or undercutting the measuring signal of this value
causes
switching of the relevant relay programmed as a limit contact.
Hysteresis:
Range above and below the nominal value set up that shifts the
switching point of the relay.
In this way, oscillation of the regulation is prevented.
Time delay:
Time in seconds for which the value must be applied before a
release is performed (by which the switching of the relay can be
delayed).
The input of these 3 values is subject to a compelled guidance.
Even if no setting of hysteresis and time delay is planned (value = 0),
you must pass through these submenus!
