Hach SC4500 User Manual page 35

Option Description
Maximum timer Indicates a period of time (in seconds) for the expiration of the OnMax TIMER and the
expiration OffMax TIMER.
Relay set to ON, OnMax TIMER set to ON: The time left is displayed before the relay
is set to OFF automatically.
Relay set to OFF, OffMax TIMER set to ON: The time left is displayed before the relay
is set ON again.
Relay contact Displays and logs the status of the relay contact (ON or OFF).
status
2 point control function
Option Description
Phase Sets the status of the relay. When the process value enters the band between high and
low alarm, the relay condition does not change. Options: Value above the limit or Value
below the limit.
High alarm Sets the upper limit in the unit of the selected parameter of the 2 point control band.
Low alarm Sets the lower limit in the unit of the selected parameter of the 2 point control band.
Timer on delay Sets a delay time for the relay to set ON.
Timer off delay Sets a delay time for the relay to set OFF.
OnMax TIMER Sets a maximum period of time. During this period the relay is set ON when passing the
corresponding limit. As soon as the time expires the relay is set to OFF regardless of the
process value.
OffMax TIMER Sets a maximum period of time (in minutes). During this period the relay is set to OFF
when passing the corresponding limit. As soon as the time expires the relay is set ON
regardless of the process value.
OnMin TIMER Sets a minimum period of time. During this period the relay is set ON when passing the
corresponding limit. The relay can only be set OFF after the period has expired and after
this expiration will be set OFF dependent on the process value.
OffMin TIMER Sets a minimum period of time. During this period the relay is set to OFF when passing
the corresponding limit. The relay can only be set to ON after the period has expired and
after this expiration will be set to ON dependent on the process value.
Maximum timer Shows a period of time (in seconds) for the expiration of the OnMax TIMER and the
expiration OffMax TIMER. Options:
Relay set to ON, OnMax TIMER set to ON—The time left is displayed before the relay is
set to OFF automatically.
Relay set to OFF, OffMax TIMER set to ON—The time left is displayed before the relay is
set to ON again.
Minimum timer Shows a period of time (in seconds) for the release of the OnMin TIMERand the OffMin
expiration TIMER. Options:
Relay set to ON, OnMin TIMER set to ON—Displays the time left before the relay can be
set to OFF again.
Relay set to OFF, OffMin TIMER set to ON—Displays the time left before the relay can be
set ON again.
Relay contact Displays and logs the status of the relay contact (ON or OFF).
status
Warning function
Option Description
Warning list Sets the monitoring of the internal warning bits of the selected source. Enabled
(default): Monitoring is active. Disabled: Monitoring is not active.
English 33