ABB REL 551 2.3 Series - Communication Channel Test Logic (CCHT)

86
Communication channel test logic
(CCHT)
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LQMHFWLRQ
 &RPPXQLFDWLRQFKDQQHOWHVWORJLF&&+7
Prepare the terminal for verification of settings as outlined in section “Preparing for
test” in this chapter.
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 6HWDOOWKHWLPHUVDFFRUGLQJWRWKHUHFRPPHQGDWLRQV
 $FWLYDWHWKH&&+7&5ELQDU\LQSXW
 0HDVXUHWKH&&+7&6ELQDU\RXWSXW
A pulse should appear “tCS”.
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The CCHT--ALARM should appear.
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&&+767$57DQGZDLWIRUWKHVLJQDOWRFRPHEDFN
The CCHT--CHOK should appear.
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