Relay and Timer Specifications
Timing Charts - 700-HT3 Multi-function Time Module (t = Time Range 0.05 s…100 h)
Terms:
U is Power Input
R is Relay Output
S Signal, +A1 Socket, B1 Timer
t is the resulting Time Delay (Red light-emitting diode)
1. Power On-delay 3. Power On Repeat Cycle, On Start
Apply power (U) to timer. Relay contacts (R) change state after time delay (t) is complete. Apply power (U) to timer. Relay contacts (R) change state immediately and the time delay (t)
Contacts return to their shelf state when power is removed. Terminal B1 is not used in this mode. begins. When the time delay is complete, the contacts return to their shelf state for time delay (t)
(time on = time-off). This cycle repeats until the power is removed. Terminal B1 is not used in this
mode.
2. Power On One-shot 4. Signal On-delay and Signal Off-delay
Apply power (U) to timer. Relay contacts (R) change state immediately and the time delay begins. Apply power (U) to timer. When the signal (S) is closed the time delay (t) begins, after the time
When the time delay (t) is complete, contacts return to their shelf state. Contacts return to their delay is completed the relay contacts (R) change state. Opening the signal starts the time delay,
shelf state when power is removed. Terminal B1 is not used in this mode. after the time delay is completed the contacts return to their shelf state. If the signal is closed or
opened before the time delay is complete, the time delay is reset. Contacts return to their shelf
state when power is removed.
Timing Charts -Cat. No. 700-HT3 Timing Modes, Time Description, Timing Charts, and DIP Switch Selections
Terms:
U is Power Input
R is Relay Output
S Signal, +A1 Socket, B1 Timer
t is the resulting Time Delay (Red light-emitting diode)
5. Signal Off-delay 7. Signal Off One-shot
Apply power (U) to timer. When the signal (S) is closed, the relay contacts (R) change state Apply power (U) to timer. When the signal (S) is closed and then opened, the relay contacts (R)
immediately. When the signal is opened, the time delay (t) begins. If the signal is closed before change state immediately and the time delay (t) begins. After the time delay begins, opening or
the time delay is complete, the time delay is reset and the relay remains energized. When the closing the signal will not reset the time delay. When the time delay is complete, the contacts
time delay is complete, the contacts return to their shelf state. Contacts return to their shelf state return to their shelf state. Contacts return to their shelf state when power is removed.
when power is removed.
8. Signal On and Signal Off Watchdog Monitor
6. Signal On One-shot Apply power (U) to timer. When the signal (S) is closed, the relay contacts (R) energize
Apply power (U) to timer. When the signal (S) is closed, the relay contacts (R) change state immediately and the time delay (t) begins. If the signal is opened before the time delay is
complete, the relay remains energized and the time delay is reset. When the time delay is
immediately and the time delay (t) begins. After the time delay begins, opening or closing the completed, the contacts return to their shelf state. If the signal is opened after the time delay is
signal will not reset the time delay. When the time delay is complete, the contacts return to their
shelf state. Contacts return to their shelf state when power is removed. complete, the relay contacts energize immediately and the same time delay begins. Continuous
cycling of the signal at a rate that is faster than the time delay causes the relay contacts to remain
energized. Contacts return to their shelf state when power is removed.
18 Rockwell Automation Publication 700-TD552D-EN-P - June 2019
