Page 4 - IDEC timer catalogue

Timing Diagrams Overview Timers

Timing Diagrams Overview

Switches & Pilot Lights Timer Power Start Input Start Input Power
Guide to Reading Timing Function Diagrams
Power
Terminals Shorted Terminals Opened
Removed
Applied

preset time, ready for the re-application of supply voltage
Input Signal NO Contact Closes 1. If power is disconnected during actual timing, most electronic timers reset to the
(except for GT3F “true OFF Delay”).
NC Contact Opens 2. NO = Normally open.
NO Contact 3. NC = Normally closed.
Timer Begins Counting
NC Contact
Display Lights Set Time

ON-Delay 2 (signal start)
ON-Delay 1 (power start) Timing Function Diagrams Overview
When voltage is applied to the coil, the relay contacts remain in the off state Voltage is applied to the coil at all times. When a start input is supplied, the
and the set time begins. When the set time has elapsed, the relay contacts relay contacts remain in the off state and the set time begins. When the set
transfer to the on state. The contacts remain in the on state until the timer is time has elapsed, the relay contacts transfer to the on state. The contacts
Relays & Sockets P(B)1, GT3A-1, -2, -3, GT3D-1, -2, -3, -4, and GE1A. reset input or by removing the coil voltage. Applicable models: GT3A-4, GT3D-4
reset. The timer is reset by removing the coil voltage. Applicable models: RTE-
remain in the on state until the timer is reset. The timer is reset by applying a
and RTE-P(B) 2.
Power

Output Start Input
T Output
T
Type No. GT3A-1, -2, -3 GT3D-1, -2, -3, -4 RTE-*1
Mode A 1-A A Type No. GT3A-4 GT3D-4 RTE-*2
A
A
2-A
Timers See Page 805 813 798 Mode 805 813 798
See Page
Type No. GE1A GT5P GT5Y
Interval 2 (signal start)
See Page 844 813 853
Voltage is applied to the coil at all times. When a start signal is supplied, the
Interval 1 (power start) relay contacts transfer immediately to the on state and the set time begins.
When the set time has elapsed, the relay contacts transfer to the off state. The
When voltage is applied to the coil, the relay contacts transfer immediately to contacts remain in the off state until the timer is reset. The timer is reset by ap-
the on state and the set time begins. When the set time has elapsed, the relay plying a reset input or by removing the coil voltage. Applicable models: GT3A-5
Terminal Blocks timer is reset. The timer is reset by removing the coil voltage. Applicable models: Start Input
contacts transfer to the off state. The contacts remain in the off state until the
and GT3D-4.
RTE-P(B)1, GT3A-1, -2, -3, and GT3D-1, -2, -3, -4.

Power
Output
T
Output
T
Type No. GT3A-5 GT3D-4
Circuit Breakers Mode 805 1-B 798 See Page 805 813
Mode
A
2-E
GT3D-1, -2, -3, -4
GT3A-1, -2, -3
Type No.
RTE-*1
B
B
See Page
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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