Specifications

1. Use with the specified voltage.
Use with voltage outside of the specifications can cause malfunc-
tion or switch damage, as well as electrocution and fire hazard,
etc.
2. Never use a load which exceeds the maxi-
mum load capacity.
This may damage a switch or reduce its service life.
3. Do not use a load that generates surge volt-
age.
Although surge protection is provided at the output side of a
switch, damage may still occur if the surge is applied repeatedly.
When a load, such as a relay or solenoid, which generates surge
is directly driven, use a type of switch having a built-in surge
absorbing element.
4. Be sure to confirm the fluid specifications.
Since switches do not have explosion-proof construction, do not
use flammable gases or fluids. This may cause a fire or explosion.
5. Be certain to observe the regulating pres-
sure range and maximum operating pres-
sure.
Operation at a pressure outside of this range can cause failure.
In addition, the switch will be broken if operated above the maxi-
mum operating pressure.
Design & Selection Wiring
Warning
Warning
Series ZL
Electronic Pressure Switch Precautions 1
Be sure to read before handling.
1. Do not use if equipment does not operate
properly.
Verify correct mounting by suitable function and leakage inspections
after air and power are connected following mounting, maintenance
or conversions.
2. Do not drop or bump.
Do not drop, bump or apply excessive impact (1000m/s²) when
handling. Even if the switch body is not damaged, the switch may
suffer internal damage that will lead to malfunction.
3. Hold the product from the body side when
handling.
The tensile strength of the power cord is 49N, and pulling it with a
force greater than this can cause failure. Hold by the body when
handling.
4. Turn the setting trimmer gently using a
watchmakers screw driver.
Turn the setting trimmer gently using a watchmakers screw driver.
Do not turn beyond the stoppers located at both ends. If the trim-
mer is broken, adjustment will be impossible.
5. Pressure port
Do not insert wire, etc., from the pressure port. This will damage
the pressure sensor, making it impossible to obtain normal opera-
tion.
1. Confirm wire colors and terminal numbers
when wiring is performed.
Since incorrect wiring can lead to breakage or failure of the switch
as well as malfunction, perform wiring after confirming wiring col-
ors and terminal numbers with the instruction manual.
2. Avoid repeatedly bending or stretching lead
wires.
Broken lead wires will result from applying bending stress or
stretching force to the lead wires. In the event that lead wires are
damaged creating a possibility of malfunction, replace the entire
product. (For cases in which the lead wires cannot be replaced
through grommets.)
3. Confirm proper insulation of wiring.
Be certain that there is no faulty wiring insulation (contact with
other circuits, ground fault, improper insulation between terminals,
etc.). Damage may occur due to excess current flow into a switch.
4. Do not wire with power lines or high voltage
lines.
Wire separately from power lines or high voltage lines, avoiding
parallel wiring or wiring in the same conduit with these lines.
Control circuits containing switches may malfunction due to noise
from these other lines.
5. Do not allow short circuiting of loads.
Use caution, as switches will be damaged instantly if a load is
short circuited. Be especially careful not to reverse the power sup-
ply line (Brown) and the output line (Black).
Pressure Source
Mounting
Warning
Warning
1. Observe the fluid and ambient temperature
ranges.
The fluid and ambient temperatures are 0 to 60°C. Since moisture
in circuits can freeze at 5°C or below, causing damage to O-rings
and malfunction, take measures to prevent freezing. The installa-
tion of an air dryer is recommended to remove drainage and mois-
ture from circuits. Furthermore, even though the ambient temper-
ature range remains within specifications, do not operate in loca-
tions where there are abrupt temperature changes.
2. Vacuum pressure switches
There will be no change in performance if a pressure of 0.5MPa
or less is applied for 1 second or less (when releasing a vacuum),
but care should be taken that pressures of 0.2MPa or more are
not applied on a regular basis.
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