Carrier TruVu TV-MPCXP1628-NR, Руководство по установке и запуску

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Troubleshooting
TruVu™ MPC Controller ( part no. TV-MPCXP1628-NR) CARRIER CORPORATION ©2021
Installation and Start-up Guide All rights reserved
76
To monitor power input type
To monitor power inputs, add BACnet Analog Input (AI) and/or Binary Input (BI) microblocks to the control
program. This enables you to view:
•
Input power type (AC or DC)
•
Input power frequency when AC power is applied (50 or 60 Hz)
•
Fault on auxiliary power outputs (+12V and +24V)
•
Input power state (low voltage/normal)
WARNING You must not use this value as an input in a control program, as it could damage the
controller or controlled equipment. The value must only be trended.
Changes to the power demands of the controller, such as output state, input power requirements, peripheral
current draw, etc., can impact the reading, which results in a potential feedback loop and output cycling.
The Input power state does not take all factors into account, which could result in an incomplete evaluation
of conditions. You must only use these values for troubleshooting and not for equipment logic.
In the Snap application, select the following for each AI / BI:
Status/Attribute Microblock
type Expander number :
Channel number I/O type Description
Input Power State AI 0:51 Special
•
0-Normal
•
1-low input voltage
Input Power Type BI 0:52 Special •
False - AC
•
True - DC
Input Power Frequency BI 0:53 Special •
False – 50 Hz
•
True – 60 Hz
Fault status of +12V
Aux power (Rnet)
BI 0:55 Special Returns fault status on +12V
auxiliary power signal. Fault
events such as under voltage,
over voltage, overload, reverse
current and thermal shutdown
conditions
•
False – No fault
•
True – Fault
Fault status of +24V
Aux power
BI 0:56 Special Returns fault status on +24V
auxiliary power signal. Fault
events such as under voltage,
over voltage, overload, reverse
current and thermal shutdown
conditions
•
False – No fault
•
True – Fault