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< 5. Wiring >
5-1
IM 11M12D01-01E
5. Wiring
This chapter describes the wiring connections to the AV550G Averaging Converter.
5.1 General
WARNING
Never apply power to the averaging converter and other instruments connected to the averaging
converter until all wiring is completed.
CAUTION
This product complies with the CE marking. Where compliance with the CE marking is necessary, the
following wiring is required.
1. Install an external switch or circuit breaker to the power supply of the averaging converter.
2. Use an external switch or circuit breaker rated 20A and conforming to IEC 947-1 or IEC 947-3.
3. It is recommended that the external switch or circuit breaker be installed in the same room as the
averaging converter.
4. The external switch or circuit breaker should be installed within reach of the operator and
identified with marking as a power supply switch to the averaging converter.
5. Power lines such as power cables and heater wires should be fixed securely onto a wall
or construction using cable racks, conduit tubing, nylon bands or other appropriate ways.
Accidental removal from terminals by pulling may result in electric shock.
5.1.1 Wiring Precautions
Precautions Concerning the Correspondence Between Detectors and Channel Cards
Multiple detectors are connected to the averaging converter. Make sure that the wiring is
run properly
between the detector and its corresponding channel card on the averaging
converter. Special care
should be exercised so that the channel number of the detector
signal line from the channel card
corresponds the one of the detector heater line from the
power supply unit. Disagreement may result
in malfunction of the detector as well as
invalid operation. (A channel number is indicated in the
channel card slot.)
The specified number of channel cards per purchase order is factory installed in channels
in order
from CH1. The factory-installed channels can be changed as desired. All the
channels are the same.
Note that in a 4-channel base averaging converter (AV550G-A-),
channels CH5 to CH8 cannot be
used.
To remove a channel card, loosen the 2 screws attached to the top and bottom of the
card, and then
while holding the loosened screws, pull straight away from the slot. To
install a channel card, insert the
card by sliding along the guide rail in the slot, and then
securely tighten the 2 screws.
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