16
H5CR
H5CR
Precautions
■
Power Supplies
• The input circuit is not insulated from the power supply circuit.
The internal circuit might be damaged by a surrounding AC cir-
cuit, so use an insulated AC power supply with equipment con-
nected to the input circuit.
• If power is interrupted for less than 10 ms, operation will continue
normally. If power is interrupted for between 10 and 500 ms, op-
eration will be inconsistent, and timing may stop or reset, de-
pending on the mode.
• Connect the power supply voltage through a relay or switch in
such a way that the voltage reaches a fixed value immediately.
• Depending on switching frequency, current surges may degrade
relay contacts; relays with a capacity greater than 10 A are rec-
ommended.
■
Input and Output
• Do not use external sources to increase the voltage of input sig-
nals (control signal, reset, gate, and key protection).
• Be sure that the load of the control output (contact, transistor) is
less than the maximum values indicated in the specifications. If
the output load exceeds the recommended value, the life span of
the contact output type will be shortened dramatically, and the
transistor of the transistor output type will be damaged.
• The transistor output is insulated from the internal circuitry by a
photocoupler, so either NPN or PNP transistors can be used.
■
Self-diagnostic Function
• The following displays will appear if an error occurs. The present
value and output enter the same status as after pressing the RE-
SET key.
■
Changing Set Values
• The Timer set value can be changed while the timer is operating,
so a high value can be set temporarily to inactivate the timer, or
a low value can be set to activate the timer more quickly. (If the
set value is changed accidentally during operation, the timer
might be activated. Therefore, turn the key protection input ON
unless the set value is being changed.)
• To avoid changing the output when changing the set value, it is
recommended to begin changing the set value by entering a
large number in the higher digit.
■
Operation with a Set Value of 0
• Operation with a set value of 0 will vary depending on the output
mode. For details, refer to Timing Charts.
■
Operating Environment
• When using the Timer in an area with much electronic noise,
separate the Timer, wiring, and the equipment which generates
the input signals as far as possible from the noise sources. It is
also recommended to shield the input signal wiring to prevent
electronic interference.
• Organic solvents (such as paint thinner), as well as very acidic or
basic solutions might damage the outer casing of the Timer.
■
Other
• When the Timer is installed in a control box and tests are con-
ducted which may damage the Timer’s internal circuitry (for ex-
ample, a test measuring the maximum voltage difference
between the control circuit and metal components), remove the
Timer from the control box or short circuit the terminals.
&DXWLRQ
This product contains a lithium battery. Lithium batteries ex-
plode if incinerated. Dispose of the Digital Timer as a non-com-
bustible item.
Display
Error
Output
status
Correction
Set
CPU
OFF
Press RESET
key
No change
Memory
Set at the
factory
e1
e2
In the interest of product improvement, specifications are subject to change without notice.
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. L035-E1-4B
OMRON Corporation
Industrial Automation Company
Measuring and Supervisory Controls Department
Shiokoji Horikawa, Shimogyo-ku
Kyoto, 600-8530 Japan
Tel: (81)75-344-7108/Fax: (81)75-344-7189
Printed in Japan
0401-1.5C
