User Manual
E5CD/E5ED
45
26.Do not place heavy objects on top of the USB-Serial Conversion
Cable, bend the Cable beyond its natural bending limit, or pull on
the Cable. Doing so may result in failure.
27.Make sure that the indicators on the USB-Serial Conversion Cable
are operating properly. Depending on the application conditions,
deterioration in the connectors and cable may be accelerated, and
normal communications may become impossible. Perform
periodic inspection and replacement.
28.Do not disconnect the USB-Serial Conversion Cable while
communications are in progress. The Digital Temperature
Controller may be damaged or may malfunction.
29.Connectors may be damaged if they are inserted with excessive
force. When connecting a connector, always make sure that it is
oriented correctly. Do not force the connector if it does not connect
smoothly.
30.Do not touch the external power supply terminals or other metal
parts of the cables on the Digital Temperature Controller.
31.Noise may enter on the USB-Serial Conversion Cable, possibly
causing equipment malfunctions. Do not leave the USB-Serial
Conversion Cable connected constantly to the equipment.
32.With the E5ED/E5ED-B, do not connect cables to both the front-
panel Setup Tool port and the top-panel Setup Tool port at the
same time. The Digital Temperature Controller may be damaged
or may malfunction.
33.Observe the following precautions when you wire the E5@D-B.
• Always follow the E5
D-B (Models with Push-In Plus Terminal
Blocks) in E5
D Digital Temperature Controllers User's Manual
(Cat. No. H224).
• Do not wire anything to the release holes.
• Do not tilt or twist a flat-blade screwdriver while it is inserted into
a release hole on the terminal block. The terminal block may be
damaged.
• Insert a flat-blade screwdriver into the release holes at an angle.
The terminal block may be damaged if you insert the screwdriver
straight in.
• Do not allow the flat-blade screwdriver to fall out while it is
inserted into a release hole.
• Do not bend a wire past its natural bending radius or pull on it
with excessive force. Doing so may cause the wire to break.
• Do not use crossover wiring except for the input power supply
and communications.
Service Life
1. Use the Digital Temperature Controller within the following
temperature and humidity ranges:
Temperature: 10 to 55°C (with no icing or condensation),
Humidity: 25% to 85%
If the Digital Temperature Controller is installed inside a control
board, the ambient temperature must be kept to under 55°C,
including the temperature around the Digital Temperature
Controller.
2. The service life of electronic devices like Digital Temperature
Controllers is determined not only by the number of times the relay
is switched but also by the service life of internal electronic
components. Component service life is affected by the ambient
temperature: the higher the temperature, the shorter the service
life and, the lower the temperature, the longer the service life.
Therefore, the service life can be extended by lowering the
temperature of the Digital Temperature Controller.
3. When two or more Digital Temperature Controllers are mounted
horizontally close to each other or vertically next to one another,
the internal temperature will increase due to heat radiated by the
Digital Temperature Controllers and the service life will decrease.
In such a case, use forced cooling by fans or other means of air
ventilation to cool down the Digital Temperature Controllers. When
providing forced cooling, however, be careful not to cool down the
terminals sections alone to avoid measurement errors.
Ensuring Measurement Accuracy
1. When extending or connecting the thermocouple lead wire, be
sure to use compensating wires that match the thermocouple
types.
2. When extending or connecting the lead wire of the platinum
resistance thermometer, be sure to use wires that have low
resistance and keep the resistance of the three lead wires the
same.
3. Mount the Digital Temperature Controller so that it is horizontally
level.
4. If the measurement accuracy is low, check to see if input shift has
been set correctly.
Resistance to Water
The degree of protection is as shown below. Sections without any
specification on their degree of protection or those with IP0 are not
waterproof.
Front panel: IP66
Rear case: IP20, Terminal section: IP00
When waterproofing is required, insert the Waterproof Packing on the
backside of the front panel.
Keep the Port Cover on the front-panel Setup Tool port of the E5ED/
E5ED-B securely closed. The degree of protection when the
Waterproof Packing is used is IP66. To maintain an IP66 degree of
protection, the Waterproof Packing and the Port Cover for the front-
panel Setup Tool port must be periodically replaced because they
may deteriorate, shrink, or harden depending on the operating
environment.
The replacement period will vary with the operating environment.
Check the required period in the actual application. Use 3 years or
sooner as a guideline. If the Waterproof Packing and Port Cover are
not periodically replaced, waterproof performance may not be
maintained.
If a waterproof structure is not required, then the Waterproof Packing
does not need to be installed.
Precautions for Correct Use