Omron H3CR-A Manual page 64

H3CR-F/G/H
Input/Output (H3CR-H)
An appropriate input is applied to the input signal terminal of the Tim-
er when the input terminal for the input signal is short-circuited. Do
not attempt to connect any input terminal to any terminal other than
the input terminal or to apply voltage across other than the specified
input terminals or the internal circuits of the Timer may be damaged.
Input contact
Power supply
AC or DC
Input
terminal
*
L
*Do not connect a relay or any other load between these two
points, otherwise the internal circuit of the Timer may be
damaged due to the high-tension voltage applied to the input
terminals.
When connecting a relay or a transistor as an external signal input
device, pay attention to the following points to prevent short-circuit-
ing due to a sneak current to the transformerless power supply.
If a relay or transistor is connected to two or more Timers, the input
terminals of those Timers must be wired properly so that they will not
be different in phase or the terminals will be short-circuited to one
another (refer to the figures below).
H3CR series timer
Contact or transistor for
external input signal
Incorrect
Short-circuit
current
Correct
Environment
When using the Timer in an area with excess electronic noise, sepa-
rate the Timer, wiring, and the equipment which generates the input
signals as far as possible from the noise sources. It is also recom-
mended to shield the input signal wiring to prevent electronic inter-
ference.
Organic solvents (such as paint thinner), as well as very acidic or
basic solutions can damage the outer casing of the Timer.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. L86-E1-2
64
H3CR
Input
Power supply
terminal
Input
terminal
Input
Power supply
terminal
Input
terminal
Others
If the Timer is mounted on a control board, dismount the timer from
the control board or short-circuit the circuitry of the power board be-
fore carrying out a voltage withstand test between the electric cir-
cuitry and non current-carrying metal part of the Timer, in order to
prevent the internal circuitry of the Timer from damage.
H3CR-F/G/H