Siemens 3RP25 Manual page 55

3RP2540 time relay - OFF-delay/positive passing make contact without control signal
The time relay is optionally available with 1 or 2 CO contacts.
The time relay switches over when the control supply voltage is applied. The operating time t
starts when the control supply voltage is disconnected. The relay switches back to the idle
state when t has elapsed. It is ensured that if the minimum ON duration is not observed
either timing will not start or, if the time has started, it will always be completed in an orderly
fashion. Users can rely on intermediate states of the functional sequence, such as "no relay
dropout", being detected. If the control supply voltage is applied again after the time has
started, the time is reset. When the control supply voltage is withdrawn, the time starts again
(retriggerable).
7 time ranges can be set using a time range and function selector switch:
● 0.05 s - 1 s
● 0.15 s - 3 s
● 0.5 s - 10 s
● 1.5 s - 30 s
● 0.05 min (3 s) - 1 min (60 s)
● 5 s - 100 s
● 0.5 min (30 s) - 10 min (600 s)
Note
The desired operating time is set precisely with the operating time adjustment switch.
Note
Changes to the time range (time range and operating time) only take effect if made in the
deenergized state.
3RP25 Time Relays
Manual, 09/2019, A5E31947765002A/RS-AC/003
Single function devices
6.4 OFF-delay
55