Brochure

9050JCK Electronic Timing Functions
Function Description Timing Diagram
Repeat Cycle-Off When input voltage is applied, the time delay T1 begins. When time delay T1 is
complete, the relay contacts change state for time delay T2. This cycle repeats
until the input voltage is removed. The trigger switch is not used in this function.
Two dials are provided for independently adjust able repeat cycle timing ranges.
For JCK70 tim ing relay, T1 equals T2.
Repeat Cycle-On When input voltage is applied, the relay contacts change state immediately and
time delay T1 begins. When time delay T1 is complete, the contacts return to
their shelf state for time delay T1. This cycle repeats until the input voltage is
removed. The trigger switch is not used in this function.
On/Off Delay Upon application of input voltage, the time delay relay is ready to accept trigger
signals. When the trigger switch closes, a pre-set On delay begins. At the end
of the On delay, the relay contacts change state. When the trigger switch opens,
the relay contacts remain in the current state until the pre-set Off delay elapses.
At the end of the Off delay, the relay contacts return to their shelf state. The
cycle can be repeated by re-closing the trigger switch after the timing cycle ends.
If the trigger switch opens before the On delay elapses, the relay remains in its
shelf state, and the delay timer resets. If the trigger switch re-closes before the
Off delay elapses, the relay remains in its changed state, and the delay timer
resets.
One Shot Falling
Edge
Upon application of input voltage, the time delay relay is ready to accept trig-
ger signals. When the trigger switch closes, the relay remains in its shelf state.
When the trigger switch opens, the relay contacts change state and a pre-set
time delay begins. At the end of the time delay, the relay contacts return to their
shelf state unless the trigger switch closes and opens before the time delay
elapses. Continuous cycling of the trigger signal at a rate faster than the time
delay causes the relay to remain in its changed state.
Watchdog Upon application of input voltage, the time delay relay is ready to accept trigger
signals. When the trigger switch closes, the relay contacts change state and the
pre-set time delay begins. At the end of the time delay, the relay contacts return
to their shelf state unless the trigger switch closes and opens before the time
delay elapses. Continuous cycling of the trigger signal at a rate faster than the
delay time causes the relay to remain in its changed state
Trigger On Delay Upon application of input voltage, the time delay relay is ready to accept trigger
signals. When the trigger switch closes, a pre-set time delay begins. At the end
of the pre-set time delay, the relay contacts change state and remain in that
position as long as either the trigger signal is maintained or the input voltage
remains. If the trigger switch opens during the time delay, the relay contacts
return to their shelf state.
Input
Voltage
ON
OFF
ON
OFF
Relay
Contacts
T2T1
T1
T2
ON
OFF
ON
OFF
Input
Voltage
Relay
Contacts
T1
T1 T1
T1
ON
OFF
ON
OFF
Trigger
Switch
CLOSED
OPEN
Input
Voltage
Relay
Contacts
T1
T1
DELAY
DELAY
Input
Voltage
Relay
Contacts
Trigger
Switch
ON
OFF
CLOSED
OPEN
ON
OFF
Input
Voltage
Relay
Contacts
Trigger
Switch
ON
OFF
CLOSED
OPEN
ON
OFF
DELAY
DELAY
Input
Voltage
Relay
Contacts
Trigger
Switch
ON
OFF
CLOSED
OPEN
ON
OFF
DELAY
DELAY
Application,
General Information (continued)
Type JCK Electronic Timing Relays
5