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Data is subject to errors and technical modifications.
Modular Devices
& Enclosures
Delay Timers
Technical Data
Delay Timers
Delay timer devices are used to control a variety of processes where the
requirement is for switching circuits on, off or delaying the on or off switching
for a pre-set period of time. Typical device types are:
-
Delay on
- intended to delay the starting or switching of a circuit for a set
period of time following the command signal e.g. to delay the starting of
motor loads where a large number of motors are to be started by the same
switch to reduce the effects of the starting currents.
-
Delay off
- intended to delay the stopping or switching off of a circuit for a
set period of time following the removal of the command signal e.g. to
overrun an extractor following the switching off of a process that creates
fumes.
-
Adjustable time on
- intended to switch on for a set period, the command
signal must remain on throughout the set period e.g. to switch on two sets
of heaters with one set (the boost) switching off after the set period.
-
Impulse timer
- intended to switch on for a set period, the command
signal length is not important e.g. to boost a time clock controlled circuit
such as a water storage heater.
-
Symmetrical timer
- intended to toggle a circuit on and off in regular time
patterns e.g. to run an extractor intermittently.
Multifunction Timer - 6 Individual Functions
A
= Timer.
B
= Delay off (output relay opens either at end of command or after set time
period - which ever is shorter).
C
= Delay off.
D
= Delay on.
E
= Delay on (output relay closes either at end of command or after set time
period - which ever is shorter).
F
= Symmetrical timer.
On selection - contact permanently closed
Off selection - contact permanently open
Output relay open - with no command
Output relay open - with command signal running
Output relay closed - with command signal running
Output relay close - with command signal removed
Output relay closed (
EZN005
)
T
T
T
T T T T T
T