Page 5 - IDEC timer catalogue

Timers Timing Diagrams Overview

Cycle 1 (power start, OFF first) Cycle 2 (signal start, OFF first)
When voltage is applied to the coil, the contacts remain in the off state and the Voltage is applied to the coil at all times. When a start signal is supplied, the
set time begins. At the end of the set time, the contacts transfer to the on state relay contacts remain in the off state and the set time begins. At the end of the
and remain in the on state until the set time elapses. The timer cycles between set time, the contacts transfer to the on state and remain in the on state until
the two states until power is removed from the coil. Removing the coil voltage the set time elapses. The timer cycles between the two states until the timer Switches & Pilot Lights
resets the timer. The set time for both the on state and the off state is the is reset. The set time for both the on state and the off state are the same. The
same. Applicable models: GT3A-1, -2, -3, GT3D-1, -2, -3, -4 and RTE-P(B)1. timer is reset by application of a reset input or by removing coil voltage. Ap-
plicable models: GT3A-4, GT3D-4 and RTE-P(B) 2.
Power
Start Input

Output
T T T Output
T T T
Type No. GT3A-1, -2, -3 GT3D-1, -2, -3, -4 RTE-*1 Display Lights
Mode C 1-C C Type No. GT3A-4 GT3D-4 RTE-*2
See Page 805 813 798 Mode B 2-B B
See Page 805 813 798

Cycle 3 (power start, ON first)
When voltage is applied to the coil, the contacts immediately transfer to the on One Shot Cycle (signal start)
state and the set time begins. At the end of the set time, the contacts transfer
to the off state and remain in the off state until the set time elapses. The timer Voltage is applied to the coil at all times. When a start signal is supplied, the con-
cycles between the two states until power is removed from the coil. Removing tacts remain in the off state and the set time begins. At the end of the set time,
the coil voltage resets the timer. The set time for both the off state and the the contacts transfer to the on state and remain in the on state for the set time.
on state is the same. Applicable models: GT3A-1, -2, -3, GT3D-1, -2, -3, -4 and After the set time has elapsed, the contacts return to the off state. The contacts Relays & Sockets
RTE-P(B)1. remain in the off state until the timer is reset. The timer is reset by application of
a reset input or by removing coil voltage. Applicable models: GT3A-5 and GT3D-4.

Power
Start Input

Output
Output
T T T
T T
Type No. GT3A-1, -2, -3 GT3D-1, -2, -3, -4 RTE-*1
Type No. GT3A-5 GT3D-4 Timers
Mode D 1-D D
Mode B 2-F
See Page 805 813 798
See Page 805 813
One Shot 1 (signal start, retriggerable)
One Shot 2 (signal start)
Voltage is applied to the coil at all times. When a start signal is supplied, the
contacts immediately transfer to the on state and the set time begins. If another Voltage is applied to the coil at all times. When a start signal is supplied, the
start signal is supplied (before set time has elapsed) the set time restarts, contacts immediately transfer to the on state and the set time begins. If another
as the contacts remain in the on state. Successive pulses at a frequency start signal is supplied (before set time has elapsed), the set time will not be
greater than the set time will cause the contacts to remain in the “On state” affected. When the set time has elapsed, the contacts transfer back to the off Terminal Blocks
indefi nitely. When the set time has elapsed the contacts transfer back to the off state. The contacts remain in the off state until the next start signal is supplied
state. The contacts remain in the off state until the next start signal is supplied (no reset is necessary). The timer can be reset by application of a reset input or
(no reset is necessary). The timer can be reset by application of a reset input or by removing coil voltage. Applicable models: GT3A-6, GT3D-4, and RTE-P(B)2.
by removing coil voltage. Applicable models: GT3A-6 and GT3D-4.
Start Input
Start Input

Output
T T
Output
T T T
Type No. GT3A-6 GT3D-4 RTE-*2 Circuit Breakers
Type No. GT3A-6 GT3D-4 Mode C 3-E F
Mode A 3-C See Page 805 813 798
See Page 805 813 1. T = set time, T’ = shorter than set time, Ts = one shot output time
2. For more detailed timing diagrams, see specifi cations for individual timer models.

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