9
Precautions for Safe Use
E5@C Digital Temperature Controllers User’s Manual (H174)
• For compliance with Lloyd’s standards, the E5CC, E5CC-U, E5CC-B, E5EC, E5EC-B, E5AC, and
E5DC must be installed under the conditions that are specified in Shipping Standards.
• On models with two Setup Tool ports (E5EC, E5EC-B, E5AC, E5DC, E5DC-B, and E5GC), do not
connect cables to both ports at the same time. The Digital Controller may be damaged or may
malfunction.
• Do not exceed the communications distance that is given in the specifications and use the specified
communications cable.
• Do not turn the power supply to the Digital Controller ON or OFF while the USB-Serial Conversion
Cable is connected. The Digital Controller may malfunction.
• Use wires with heat resistance of 75°C min to wire the terminals because the maximum terminal
temperature is 75°C.
• Do not bend the communications cables past their natural bending radius. Do not pull on the
communications cables.
• For the E5DC and E5DC-B, when you attach the Main Unit to the Terminal Unit, make sure that the
hooks on the Main Unit are securely inserted into the Terminal Unit.
• For the E5CC-U, when you attach the Main Unit to the socket, make sure that the hooks on the
socket are securely inserted into the Main Unit.
• Install the DIN Track vertically to the ground.
• For the E5DC and E5DC-B, always turn OFF the power supply before connecting the Main Unit to or
disconnecting the Main Unit from the Terminal Unit, and never touch nor apply shock to the terminals
or electronic components. When connecting or disconnecting the Main Unit, do not allow the
electronic components to touch the case.
• Observe the following precautions when you remove the terminal block or pull out (draw out) the
interior of the E5GC.
• Follow the procedure given in Drawing Out the Interior Body of the E5GC to Replace It on page
2-21 of this manual.
• Turn OFF the power supply before you start and never touch nor apply shock to the terminals or
electric components.
When you insert the interior body of the Digital Controller, do not allow the electronic components
to touch the case.
• Check for any corrosion on the terminals.
• When you insert the interior body into the rear case, confirm that the hooks on the top and bottom
are securely engaged with the case.
• Observe the following precautions when wiring the E5@C-B.
• Follow the procedures given in E5
@
C-B (Models with Push-In Plus Terminal Blocks) on page 2-58
of this manual.
• 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 to the E5CC-B or E5EC-B except for the input power supply and
communications.
• Do not use crossover wiring to the E5DC-B.
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