Alarm Detection - YASKAWA Z1000U Technical Manual

6.5

Alarm Detection

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Alarm Codes, Causes, and Possible Solutions
Alarms are drive protection functions that do not necessarily cause the drive to stop. Once the cause of an alarm is removed,
the drive will return to the same status is was before the alarm occurred.
When an alarm has been triggered, the ALM light on the HOA keypad display blinks and the alarm code display flashes. If a
multi-function output is set for an alarm (H2-oo = 10), that output terminal will be triggered.
Note:
If a multi-function output is set to close when an alarm occurs (H2-oo = 10), it will also close when maintenance periods are reached,
triggering alarms LT-1 through LT-3 (triggered only if H2-oo = 2F).
HOA Keypad Display
AEr
Cause
Station number is set outside the possible setting
range.
HOA Keypad Display
AL02
Cause
The digital input set to BAS interlock is open
HOA Keypad Display
AL03
Cause
Smoke Purge Bypass input is activated
HOA Keypad Display
AL04
Cause
Smoke Purge Drive input is activated
HOA Keypad Display
AL09
Cause
Drive run command is asserted during the restart
delay.
HOA Keypad Display
AL13
Cause
The conditions were such that it appears that the
motor has been disconnected from the load.
HOA Keypad Display
AL14
Cause
YASKAWA SIEP YAIZ1D 01C Z1000U HVAC MATRIX Drive Bypass Technical Manual
Table 6.9 Alarm Codes, Causes, and Possible Solutions
Station Address Setting Error (CC-Link, CANopen, MECHATROLINK)
Option card node address is outside of the acceptable setting range.
Set parameters to the proper values when using options.
BAS Interlock Open
Check to see if the damper is functioning properly. The damper may be in the process of opening and
the end switch may not have closed.
Smoke Purge in Bypass
Note: Also referred to as "Fireman's Override" (Bypass).
This is typically an intentional emergency run state. Check the Z2-oo digital input settings to
determine which is set to 25, then check to the physical digital input terminal DI-oo to determine
why it is closed.
Smoke Purge in Drive
Note: Also referred to as "Fireman's Override" (Drive).
This is typically an intentional emergency run state. Check the digital input settings (Z2-oo) to
determine which is set to 25. Then check to the physical digital input terminal DI-oo to determine
why it is closed.
Run Active during Restart Delay
This is not a fault condition, just informative to show why the drive is not running. If the run command
to the drive is removed, the AL09 alarm will not be shown.
Loss of Load
Replace the belt or coupling between the motor and the load. In the event of a false detection, review
parameters Z1-27 to Z1-32 and set them to more appropriate values.
Serial Comm Alarm
Minor Fault Name
Possible Solutions
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
6.5 Alarm Detection
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