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63-4309—2
52
Failure
Bad 50/60 Hz line.
Symptoms
• W7600A-F LED blinks at 25
cycles in 10 seconds.
•
Bad 50/60 Line or Hardware
failure message displayed on
the S7600A.
Cause
The 50/60 Hz is too fast, too slow
or too noisy.
W7600A-F Action
The W7600 retests the line fre-
quency. If the line frequency is
the source of the clock, TOD goes
to occupied/on state.
Remedies
Short-term solution:
• Reconfigure W7600A-F using
the ZM7601/ZM7603 Soft-
ware or from the S7600A Key-
board Display Module to use
the real-time clock card for the
clock base.
• Reroute 24 Vac supply to
W7600A-F.
• Ensure 20-30 Vac is being sup-
plied to the W7600A-F.
• If the problem is not corrected,
replace the W7600A-F.
Failure
Q7600 off-line.
Symptoms
W7600A-F LED is blinking at a
rate of 25 on and off blinks per 10
second period.
Q7600 Down-No
Communications
displayed on the
S7600A.
Cause
Q7600G Communication Mod-
ule is not functioning.
W7600A-F Action
W7600A-F continues to operate
normally. No network communi-
cations are possible.
Remedies
• Power down device, reapply
power, and observe operating
condition. Repeat process.
• Check CNAP network for wir-
ing opens and shorts.
• Check Q7600G for proper ad-
dress settings.
• Turn off power to the
W7600A-F. Replace the
Q7600G with a known, good
Q7600G. Reapply power and
observe results. If the problem
is corrected, replace the
Q7600G.
• If the problem is not corrected,
replace the W7600A-F.
Failure
System clock bad.
Symptoms
• W7600A-F LED is blinking
at a rate of 25 on and off blinks
per 10 second period.
•
System Clock Bad
displayed
on the S7600A.
Cause
The selected time base (line fre-
quency or clock card) has failed.
W7600A-F Action
Clock circuit is retested. Time-
of-day program outputs go to oc-
cupied setpoint ON conditions.
Historical data logging is sus-
pended. All digital start/stop out-
puts become de-energized and
W7600A-F control is suspended.
Remedies
• Power down W7600A-F. Re-
apply power and observe con-
dition.
• Replace W7600.
Using line synchronized 50/60 Hz
clock:
• Ensure that 20-30 Vac is ap-
plied to the W7600A-F.
• Power down W7600A-F. Re-
apply power, reset the clock
through the S7600A Keyboard
Display Module or through the
ZM7601/ZM7603 Software
and observe the condition. If
the problem persists, replace
the W7600A-F.
Failure
Q7600 failure.
Symptoms
• W7600A-F LED is blinking
at a rate of 25 on and off blinks
per 10 second period.
•
Q7600G Hardware Failure
displayed on the S7600A.
Cause
Q7600G has failed.
W7600A-F Action
W7600A-F continues to operate
normally. No network communi-
cations are possible.
Remedies
• Power down device, reapply
power, and observe operating
condition. Repeat process.
• Check CNAP network for wir-
ing opens and shorts.
• Check Q7600G for proper ad-
dress settings.
• Turn off power to the
W7600A-F. Replace the
Q7600G with a known, good
Q7600G. Reapply power and
observe results. If the problem
is corrected, replace the
Q7600G.
• If the problem is not corrected,
replace the W7600A-F.
PM7600B
TROUBLESHOOTING/ALARMS
Содержание PM7600B
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