Product Profile

Multi-function Time Relay

Time relay is an automatic control unit, that can be combined with various other electrical equipment to achieve automatic control of the operating circuit. After a preset time expires, the contact output will be closed or opened, which will enable the terminal electrical equipment to automatically run or stop.

This series of time relay has the advantages of wide operating voltage range, clear workinginstructions, small volume, uniform size, easy installation, etc.

Application

Industrial machinery

lllumination

Manufacturing

HVAC system

Food and agriculture

Technical Data

Multi-function Time Relay	EKR8-5 Series
Multi-function Time Relay
Output Characteristics	EKR8-531T
Output Characteristics	SPDT
Contact Material	Silver Alloy
Current Rating	16A@240VAC, 24VDC
Minimum Switching Requirement	100mA
Input Characteristics
Voltage Range	12-240VAC/DC
Contact Material	Silver Alloy
Operating Range(% of Nominal)	85%-110%
Timing Characteristics
Functions Available	10
Time Scales	10
Time Ranges	0.1s~10D
Minimum Switching Requirement	100mA
Tolerance(Mechanical Setting)	5%
Reset Time	150ms
Trigger Pulse Length(Minimum)	50ms
Environment
Ambient Temperature around the device	Storage: -30℃~+70℃℃ (-22℉~ +158℉) Operation: -20℃~+55°℃ (-4℉~ +131℉)

Dimensions

Dimensions: in(mm)	Wiring Diagrams

Function	Operation	Timing Chart
A On Delay Power on	When the input voltage U is applied, timing delay t begins. Relay contacts R change state after time delay is complete. Contacts R return to their shelf state when input voltage U is removed. Trigger switch is not used in this function.
B Repeat Cycle Starting Off	When the input voltage U is applied, timing delay t begins. When time delay t is complete, relay contacts R change state for time delay t. This cycle will repeat until input voltage U is removed. Trigger switch is not used in this function.
C Interval Power On	When input voltage U is applied, relay contacts R change state Immediately and timing cycle begins. When time delay is complete, contacts return to shelf state, When input voltage U is removed, contacts will also return to their state. Trigger switch is not used in this function.
D Off Delay S Break	Input voltage U must be applied continuously. When trigger S is closed. relay contacts R change state. When trigger S is opened, delay t begins. When delay t is complete, contacts R return to their shelf state. lf trigger S is closed before time delay t is complete, then time is reset. When trigger S is opened, the delay begins again, and relay contacts remain in their energized state, if input voltage U is removed, relay contacts R return to their shelf state.
E Retriggerable One Shot	Upon application ofinput voltage U, the relay is ready to accept trigger signal S. upon application of the trigger signal S, the relay contacts R transfer and the preset time t begins. At the end of the preset time t, the relay contacts R return to their normal condition unless the trigger signal S is opened and closed prior to time out t (before preset time elapses). Continuous cycling of the trigger signal S at a rate faster than the preset time will cause the relay contacts R to remain closed. lf input voltage U is removed, relay contacts R return to their shelf state.
F Repeat Cycle Starting ON	When input voltage U is applied, relay contacts R change state immediately and time delay t begins. When time delay t is complete, contacts return to their shelf state for time delay t. This cycle will repeat until input voltage U is removed. Trigger switch is not used in this function.
G Pulse Generator	Upon application ofinput voltage U ,a single output pulse of 0.5 seconds is delivered to relay offer time delay t. Power must be removed and reapplied to repeat pulse. Trigger switch S is not used in this function.
H One Shot	Upon application of input voltage U , the relay is ready to accept trigger signal S. Upon application of the trigger signal S, the relay contacts R trasher and the preset time t begins. During time-out, the trigger signal S is ignored. The relay resets by applying the trigger signal S when the relay is not energized.
I On/off Delay S Make/Break	Input voltage U must be applied continuously. When trigger S is closed, time delay t begins. When time delay t is complete, relay contacts R change state and remain transferred until trigger S is opened. lf input voltage U is removed, relay contacts R return to their shelf state.
J Memory Latch S Make	Input voltage U must be applied continuously. Output changes state with every trigger S closure. lf input voltage U is removed, relay contacts R return to their shelfsate.