Alarms, Information And Notifications; Alarm Messages - Vexve Hydrox HCU Remote Installation, Operation And Maintenance Instructions

5.4. Alarms, information and notifications

The HCU Remote system manages alarms, information and notification messages differently. Each of
these provides a specific type of information and can be triggered by either a user action or a fault in the
system. Depending on this category, an acknowledgment is required or not. Table 7 clarifies the differ-
ence between these three categories. Please note that these categories apply only to the Local HMI.
Message category
Alarm
Notification
Information
Table 7. Message categories

5.4.1. Alarm messages

Alarms in the Hydrox HCU Remote system vary depending on the point of access. Table 8 shows the ex-
isting alarms, their descriptions and their availability depending on the remote installation, should it apply.
Alarms must be acknowledged in the Local HMI and the WebApp, but not in remote applications. When
an alarm is triggered a message will popup and the user must acknowledge the message by pressing the
appropriate button. Only then will the message disappear from the screen. Troubleshooting, see section 9.
Alarm
E-Stop Alarm
Motor Fault
Tmax Alarm
Pmax Alarm
Duplicate Valve
Operation
Global system fault
alarm
Global process
fault alarm
Valve 1 position
transmitter error
Valve 2 position
transmitter error
Valve 3 position
transmitter error
Valve 4 position
transmitter error
Valve 5 position
transmitter error
Valve 6 position
transmitter error
Table 8. Alarm signals
18
Acknowledgement required
Yes
Yes
No
Description
E-Stop button is triggered
A problem occurred with the motor
Maximum operating time when opening/closing
valve has elapsed
Maximum setup pressure exceeded
User attempted to operate another valve
at the same time
There is some sort of error in the system
There is some sort of error in the process
Error in sensor/connection
Error in sensor/connection
Error in sensor/connection
Error in sensor/connection
Error in sensor/connection
Error in sensor/connection
Local Remote
(WebApp)
X X
X X
X X
X X
X X
X X
X X
X X
X X
X X
X X
Remote Remote
Modbus Physical
X
X X
X X
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