Datasheet
H5CX-@-N
41
Safety Precautions for All H5CX Series (Common)
Do not allow pieces of metal, wire clippings, or fine 
metallic shavings or fillings from installation to enter 
the product. Doing so may occasionally result in 
electric shock, fire, or malfunction.
Minor injury due to explosion may occasionally occur. 
Do not use the Timer where subject to flammable or 
explosive gas.
Fire may occasionally occur. Tighten the terminal 
screws to the rated torque.
H5CX terminals: 6.55 to 7.97 lb-in (0.74 to 0.90 N m)
P2CF Socket terminals: 4.4 lb-in (0.5 N m)
Minor injury due to electric shock may occasionally 
occur. Do not touch any of the terminals while power 
is being supplied. Be sure to mount the terminal cover 
after wiring.
The life expectancy of the output relay varies 
considerably according to its usage. Use the output 
relay within its rated load and electrical life 
expectancy. If the output relay is used beyond its life 
expectancy, its contacts may become fused or there may be a 
risk of fire. Also, be sure that the load current does not exceed 
the rated load current and when using a heater, be sure to use a 
thermal switch in the load circuit.
Minor electric shock, fire, or malfunction may 
occasionally occur. Do not disassemble, modify, or 
repair the Timer or touch internal components.
• The panel surface of the H5CX is water-resistant (conforming to 
NEMA4, IP66, UL Type 4X (Indoor Use Only). To protect the 
internal circuits from water penetration through the space between 
the H5CX and operating panel, waterproof packing is included. 
Attach the Y92F-30 Adapter with sufficient pressure with the 
reinforcing screws so that water does not penetrate the panel.
• When mounting the Timer to a panel, tighten the two mounting 
screws alternately, a little at a time, so as to keep them at an equal 
tightness. If the panel screws are tightened unequally, water may 
enter the panel.
• Store the Timer at the specified temperature. If the Time has been 
stored at a temperature of less than -10°C, allow the Time to stand 
at room temperature for at least 3 hours before use.
• Mounting the Timer side-by-side may reduce the life expectancies 
of internal components.
• Use the Timer within the specified ranges for the ambient operating 
temperature and humidity.
• Do not use in the following locations:
• Locations subject to sudden or extreme changes in 
temperature.
• Locations where high humidity may result in condensation.
• Do not use the Timer outside of the rated ranges for vibration, 
shock, water exposure, and oil exposure.
• Do not use this Timer in dusty environments, in locations where 
corrosive gasses are present, or in locations subject to direct 
sunlight.
• Install the Timer well away from any sources of static electricity, 
such as pipes transporting molding materials, powders, or liquids.
• Internal elements may be destroyed if a voltage outside the rated 
voltage range is applied.
• Be sure that polarity is correct when wiring the terminals. 
• Separate the Timer from sources of noise, such as devices with 
input signals from power lines carrying noise, and wiring for I/O 
signals.
• Do not connect more than two crimp terminals to the same 
terminal.
• Up to two wires of the same size and type can be inserted into a 
single terminals.
• Use the specified wires for wiring. Applicable Wires: AWG 18 to 
AWG 22, solid or twisted, copper.
• Install a switch or circuit breaker that allows the operator to 
immediately turn OFF the power, and label it to clearly indicate its 
function.
• When the Timer is operated with no-voltage input (NPN input), 
approximately 14 V is output from the input terminals. Use a sensor 
that contains a diode.
• Use a switch, relay, or other contact so that the rated power supply 
voltage will be reached within 0.1 seconds. If the power supply 
voltage is not reached quickly enough, the Timer may malfunction 
or outputs may be unstable.
• Use a switch, relay, or other contact to turn the power supply OFF 
instantaneously. Outputs may malfunction and memory errors may 
occur if the power supply voltage is decreased gradually.
•H5CX-A@ -N/-L@-N:
When changing the set value during a timing operation, the output 
will turn ON if the set value is changed as follows because of the 
use of a constant read-in system:
Elapsed time (UP) mode: Present value 
≥ Set value
Remaining time (DOWN) mode: Elapsed time 
≥ Set value (The 
present value is set to 0.)
When in the remaining time mode, the amount the set value is 
changed is added to or subtracted from the present value.
Operation with a set value of 0 will vary with the output mode. Refer 
to the timing charts on page 20.
•H5CX-B@ -N: 
When changing the set value during a timing operation, the output 
will turn ON if the set value is changed as follows because of the 
use of a constant read-in system:
1. Forecast Value Setting
When the present value 
≥ the set value, OUT2 (control output) 
turns ON.
When the present value 
≥ the forecast value (forecast value = 
set value - forecast set value), OUT1 (forecast output) turns ON. 
2. Absolute Value Setting
When the present value 
≥ set value 2, OUT2 (control output 2) 
turns ON.
When the present value 
≥ the forecast value (forecast value = 
set value - forecast set value), OUT1 (control output 1) turns 
ON.
When the set value is 0, the output turns ON the moment the 
signal is input. The reset operation turns OFF the output.
• Do not use organic solvents (such as paint thinners or benzine), 
strong alkali, or strong acids. They will damage the external finish.
• Confirm that indications are working normally, including the 
backlight LED, and LCD. The indicator LEDs, LCD, and resin parts 
may deteriorate more quickly depending on the application 
environment, preventing normal indications. Periodic inspection 
and replacement are required.
• The waterproof packing may deteriorate, shrink, or harden 
depending on the application environment. Periodic inspection and 
replacement are required.
 CAUTION
Precautions for Safe Use
•
•
It is recommended that the 
space between the screw 
head and the Adapter be 0.5 
to 1 mm. 
0.5 to 1 mm
Input0V
Sensor
Diode










