H3DK Datasheet, PDF (6/30 Pages) Omron Electronics LLC – Solid-state Timers

H3DK-M/H3DK-S
■ Terminal Arrangement
H3DK-M1
H3DK-M2
A1 15
A1 15 25/21
*
R1
R1
R2
15
15
25/21
H3DK-S1
A1 15
R1
15
H3DK-S2
A1 15 25/21
*
R1
R2
15
25/21
18 16
18 16 28/24 26/22
18 16
18 16 28/24 26/22
B1
Start
18 16 A2
28/24 26/22 B1
Start
18 16 A2
18 16 A2
28/24 26/22
18 16 A2
See note 3.
See note 3.
See note 3.
Note 1: The time-limit contact symbol for previous models of Timers was . The time-limit contact symbol for the H3DK is
used because the H3DK supports multiple operating modes.
Note 2: *The relay R2 can be set to either instantaneous or time-limit contacts using the switch on the front of the Timer.
Note 3: The power supply terminals do not have polarity.
See note 3.
. A different symbol is
(DIN notation)
(DIN notation)
(DIN notation)
15
A1 B1
A2
16 18
(21)
15 25
A1 B1
A2
16 18 26 28
(22)(24)
15
A1
A2
16 18
■ Input Connections
The start input of the H3DK-M1/-M2 is a voltage input.
PNP Transistor Input
NPN Transistor Input
24 VDC
Sensor (sensor
power supply)
Timer
A1 (+)
Sensor
24 VDC
(sensor
power supply)
Timer
A1 (−)
Relay Input
Timer
A1
24 ⁽⁺⁾
VDC _(−)
B1
Start
A2 (−)
Operates when PNP transistor turns ON.
24
(−)
VDC ₍₊₎
B1
Start
A2 (+)
Operates when NPN transistor turns ON.
B1
Start
A2
Operates when relay turns ON.
Consider the minimum load
of the relay. (See signal
levels on the right.)
(DIN notation)
(21)
15 25
A1
A2
16 18 26 28
(22)(24)
Voltage Input Signal Levels
Tran-
sistor
input
1. Transistor ON
• Residual voltage: 1 V max.
Voltage between terminals B1
and A2 must be equal to or
higher than the rated high level
voltage (20.4 VDC min.).
2. Transistor OFF
• Leakage current: 0.01 mA max.
Voltage between terminals B1
and A2 must be equal to or
below the rated low level voltage
(2.4 VDC min.).
Relay
input
Use relays that can adequately
switch 0.1 mA at the imposed
voltage.
When the relay is ON or OFF, the
voltage between terminals B1 and
A2 must be within the following
ranges:
• 24 to 240 VAC/DC
When relay is ON: 20.4 to 264
VAC/DC
When relay is OFF: 0 to 2.4 V
• 12 VDC
When relay is ON: 10.8 to 13.2 V
When relay is OFF: 0 to 1.2 V
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