Omron E5ZN Operation Manual page 13

Application Precautions
!Caution Tighten the terminal screws properly. Tighten them to a torque of 0.40 to
!WARNING
0.56 N·m.
To maintain safety in the event of a Temperature Controller malfunction,
always take appropriate safety measures, such as installing an alarm on a
separate line to prevent excessive temperature rise. If a malfunction prevents
proper control, a major accident may result.
Observe the following precautions when using the Temperature Controller.
• Use and store the Temperature Controller within the specified tempera-
ture and humidity ranges. If there is a possibility of the ambient tempera-
ture rising to a temperature above the specified temperature range, take
steps, such as installing fans, to cool the E5ZN. If the Temperature Con-
troller is installed incorrectly, heat will build up inside, shortening the life of
the Temperature Controller. If heat buildup is a problem, use forced cool-
ing, e.g., install a cooling fan.
• Do not touch the patterns or components on a board with your bare
hands. Hold it by the case.
• To allow heat to escape, do not block the area around the Temperature
Controller. (Ensure that enough space is left for the heat to escape.) Do
not block the ventilation holes on the casing.
• Use the Temperature Controller within the specified power supply voltage
and rated load ranges.
• Wire properly using the correct terminal polarity.
• Use the specified size of solderless terminals for wiring (M3, width
5.8 mm or less).
• Use the specified wire sizes for wiring. Power supply terminals: AWG22 to
AWG14 (cross-sectional area of 0.326 to 2.081 mm
AWG28 to AWG16 (cross-sectional area of 0.081 to 1.309 mm
of exposed wire: 6 to 8 mm.
• Do not wire unused terminals.
• Make sure that the rated voltage is reached within 2 seconds after the
power supply is turned ON.
• Allow a warmup period of 30 minutes.
• Attach a surge suppressor or noise filter to peripheral devices that gener-
ate noise (in particular, motors, transformers, solenoids, magnetic coils or
other equipment that have an inductance component). When mounting a
noise filter on the power supply, be sure to first check the filter's voltage
and current capacity, and then mount the filter as close as possible to the
E5CN. Allow as much space as possible between the Temperature Con-
troller and devices that generate powerful high-frequency noise (e.g.,
high-frequency welders, high-frequency sewing machines) or surges.
• To reduce induction noise, separate the high-voltage or large-current
power lines from other lines, and avoid parallel or common wiring with the
power lines when you are wiring to the terminals. We recommend using
separating pipes, ducts, or shielded lines.
• Install a switch or circuit breaker in a location easily accessible to the
operator and label it appropriately.
• Do not use this Temperature Controller in the following places:
• Places subject to dust or corrosive gases (in particular, sulfide gas and
ammonia gas)
• Places subject to high humidity, condensation or freezing
• Places subject to direct sunlight
3
2
), Other terminals:
2
), Length
xv