H5BR
H5BR
173
Precautions
External Power Supply
#
The capacity of the external power supply is 80 mA at 12 VDC.
When using a 24 VAC/12 to 24 VDC power supply, reduce the
load with the power supply voltage, as shown in the following
diagram (DC power supplies only).
Supply voltage (VDC)
12 VDC output
80
20
0
13
10
20
Load
c
u
rrent
(m
A
/DC)
Power Supplies
#
If power is interrupted for less than 10 ms, operation will continue
normally. If power is interrupted for between 10 and 500 ms,
operation will be inconsistent, and timing may stop or reset,
depending 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
recommended.
#
Be sure that the capacity of the external power supply is
adequate, because the power supply may not provide a surge
current sufficient to start the Timer due to the switching regulator
contained in the Timer’s internal circuitry.
Input and Output
#
Do not use external sources to increase the voltage of input
signals (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 lifespan 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
RESET key.
Display
Error
Output
status
Correction
Setting
e1
CPU
OFF
Press
RESET key
No
change
e2
Memory
(batch count
to 0)
Set at the
factory
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.
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
conducted which may damage the Timer’s internal circuitry (for
example, 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.
Caution
This product contains a lithium battery. Lithium batteries ex-
plode if incinerated. Dispose of the Digital Timer as a non-com-
bustible item.
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. L34-E1-2A
