Yokogawa DA100 Manuel d'utilisateur télécharger pdf (Page 36)

IM DA100-01E

2-15

Installation and Wiring

1 Verify that the power switch of the DA100/DS400/DS600 has been turned OFF.

2 Remove the terminal cover. (the figure below shows DU100-11.)

Terminal cover

Screws for fastenin

the cover

3 Fasten the signal wires to the terminals as shown in the figure below.

4 Re-apply the terminal cover and fasten the screws.

Note

• Make sure that the equipment connected to the signal in-/output conforms IEC (CSA) 950 or IEC (CSA)

1010. Also, make sure to use cables conform IEC (CSA) standards.

• In case you are using an internal RJC in case of thermocouple input, the following considerations are

necessary to stabilize the temperature at the terminals. Always make sure to re-apply the terminal cover;

The thermal capacity of the wiring should be small (cross sectional area of less than 0.5mm

); Minimize

outside temperature fluctuations as much as possible.

• To prevent noise, make sure to ground each unit at the grounding function terminal (below the power

switch) together at one point.

• Refrain from wiring the input signals parallel. However, if you do, then the following considerations are

necessary. Ground all equipment at the same point; Do not turn the power of other equipment ON/OFF

during operation; Do not use the burnout function.

• If communication is disrupted while outputting the value of the communication input channel from the

retransmission module, the retransmission module holds the value that was output immediately before the

disruption occurred.

• After the power is turned ON or the retransmission or input channel settings are changed, it may take

apporoximately twice teh measurement interval (amount of time needed to make two measurements) for

the value of the retransmission to be stabilized.

• When a computation error or a burnout occurs, the output voltage or current will be the “+OVER” level

or the “-OVER” level depending on the Set Up mode settings.

• The maximum time that takes to search out a burnout by using the universal input module or the DCV/

TC/DI input module is 2.5 seconds. The values being output during this period from the transmission

output module are unstable if a burnout occurs.

2.6 Connecting the Signal Lines

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Yokogawa DA100 Manuel d'utilisateur Page 36