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B.14 U: Monitors
No.
Name
(Addr. Hex)
UB-08
Bypass Controller Active Faults
(8787)
Register 2
UB-09
Current Fault
(8788)
UB-10
Current Fault Year
(8789)
UB-11
Current Fault Month Day
(878A)
UB-12
Current Fault Hour Minute
(878B)
UB-13
Previous Fault
(878C)
UB-14
Previous Fault Year
(878D)
UB-15
Previous Fault Month Day
(878E)
UB-16
Previous Fault Hour Minute
(878F)
UB-17
Contactor Voltage (120 VAC)
(8790)
UB-18
Software Version
(8791)
UB-19
Date Year
(8792)
UB-20
Date Month & Day
(8793)
UB-21
Time Hour & Minute
(8794)
UB-90
Service Register 0
(87A0)
UB-91
Service Register 1
(87A1)
UB-92
Service Register 2
(87A2)
UB-93
Service Register 3
(87A3)
UB-94
Service Register 4
(87A4)
UB-96
Bypass Unbalance Level
(87DF)
u
U1: Operation Status Monitors
No.
(Addr.
Name
Hex)
U1-01
Frequency Reference
(0040)
U1-02
Output Frequency
(0041)
312
UB-08 =
Displays the current fault.
Refer to Bypass Fault Codes on page 380
Displays the year of the current fault.
Displays the month and day of the current fault.
Displays the hour and minute of the current fault.
Displays the previous fault.
Refer to Bypass Fault Codes on page 380
Displays the year of the previous fault.
Displays the month and day of the previous fault.
Displays the hour and minute of the previous fault.
Displays the measured voltage for the power going to the contactor coils.
Displays the software version currently programmed into the bypass.
Displays the current year.
Displays the current date (Month and Date).
Displays the current time (Hours and Minutes).
Unfiltered CT1 current
Unfiltered CT2 current
Electronic overload calculations
BACnet messages sent
BACnet received messages errored
Displays the percent of current unbalance when operating in Bypass Mode.
LCD Display
Monitors the frequency reference. Display units are determined
Frequency Ref
by o1-03.
Displays the output frequency. Display units are determined by
Output Freq
o1-03.
Description
00 000 000
0
Phase Loss Brownout
0
Phase Loss Blackout
0
No Drive Comms
0
Available
0
Option Board Comms
0
Loss of Load
0
Serial Communications Fault
0
Available
for details.
for details.
Description
YASKAWA SIEP YAIZ1D 01C Z1000U HVAC MATRIX Drive Bypass Technical Manual
Unit
–
–
–
–
–
–
–
–
–
1 Vac
–
–
–
–
–
–
–
–
–
0.0 to
100.0%
Analog
Unit
Output Level
10 V: Max
0.01 Hz
frequency
10 V: Max
0.01 Hz
frequency
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