
15
Chapter 2 Installation
Dangerous voltage capable of causing death can be pres-
ent in this instrument. Before installation or beginning
any troubleshooting procedures, the power to all equipment must
be switched off and isolated. Units suspected of being faulty
must be disconnected and removed to a properly equipped work-
shop for testing and repair. Component replacement and internal
adjustments must be made by a qualified maintenance person
only.
To minimize the possibility of fire or shock hazards, do
not expose this instrument to rain or excessive moisture.
Do not use this instrument in areas under hazardous con-
ditions such as excessive shock, vibration, dirt, moisture,
corrosive gases, or oil. The ambient temperature of the areas
should not exceed the maximum rating specified in chapter 8.
2–1 Unpacking
Upon receipt of the shipment, remove the unit from the carton
and inspect the unit for shipping damage.
If there is any damage due to transit, report the damage and file
a claim with the carrier.
Write down the model number, serial number, and date code for
future reference when corresponding with our service center.
The serial number (S/N) is labeled on the box and the housing of
the controller .
2–2 Mounting
Make the panel cutout to fit the dimensions shown in figure 2.1.
Remove both mounting clamps and insert the controller into the
panel cutout. Reinstall the mounting clamps. Gently tighten the
screws in the clamp until the controller front panel fits snugly in
the cutout .
2–3 Wiring Precautions
• Before wiring, check the label to verify the correct model num-
ber and options. Switch off the power while checking.
• Care must be taken to ensure that the maximum voltage ratings
specified on the label are not exceeded.
• It is recommended that the power source for these units be pro-
tected by fuses or circuit breakers rated at the minimum value
possible.
• All units should be installed inside a suitably grounded metal
enclosure to prevent live parts from being accessible to human
hands and metal tools.
• All wiring must conform to the appropriate standards of good
practice and local codes and regulations. Wiring must be suit-
able for the voltage, current, and temperature ratings of the sys-
tem.
• The “stripped” leads as specified in figure 2.2 below are used
for power and sensor connections.
• Beware not to over-tighten the terminal screws.
• Unused control terminals should not be used as jumper points
as they may be internally connected, causing damage to the
unit.
• Verify that the ratings of the output devices and the inputs as
specified in chapter 8 are not exceeded.
• Electrical power in industrial environments contains a certain
amount of noise in the form of transient voltage and spikes.
This electrical noise can adversely affect the operation of
microprocessor-based controls. For this reason we strongly rec-
ommend the use of shielded thermocouple extension wire
which connects the sensor to the controller. This wire is a twist-
ed-pair construction with foil wrap and drain wire. The drain
wire is to be attached to ground at one end only.
Figure 2.1 Mounting Dimensions
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