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< 11. Inspection and Maintenance >
11-14
IM 11M12D01-01E
11.5 Adding Channel Cards
WARNING
To work safely, turn off the power to the averaging converter at the external breaker and position the
power switch to “O (OFF)” before the work.
After the work, position the power switch to “I (ON)”, attach the front cover, and then turn on the power
to the averaging converter at the external breaker.
Detectors can be additionally connected to the averaging converter by installing more channel cards.
Follow the procedure below to add a channel card.
<Procedure>
1) Before the procedure, turn off the power to the averaging converter at the external breaker.
2) Remove the front cover, and position the power switch to “O (OFF)”.
3) Remove the channel slot cover from the desired channel by removing the screws holding the
cover to the slot.
4) Slowly insert a channel card into the slot, sliding along the guide rail in the slot. Make sure that
the connector on the back of the channel card is seated properly and firmly in the slot.
5) Securely tighten the screws on the channel card.
6) Connect the wiring from an additional detector to the terminals on the added channel card and
to the corresponding heater terminals. Now the additional detector is connected to the averaging
converter.
7) Turn on the power to the averaging converter. Check to ensure that on the display, the added
channel becomes active and the temperature of the channel is rising.
NOTE
Up to 4 channel cards can be added in the 230 V AC version.
F11-10E.ai
Channel slot cover
Channel card
Figure 11.10 Adding Channel Cards
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