Using a PT Controller: Troubleshooting
Page 146
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2017 Sensata Technologies
12.3
PT Controller Troubleshooting using the ME-ARTR
This section assists in using your router to identify a fault, and to resolve an abnormal operational
condition detected within your AGS system.
12.3.1 PT Controller Fault Message Screens
When a PT fault is detected, the ME-ARTR’s red FAULT LED lights and the fault status is displayed
on the LCD screen (see Figure 12-9 example). Use the router’s LCD screen and the information
in this section to identify and correct the issue.
Figure 12-9, PT Controller Fault Message (Example)
12.3.2 Resolving
PT Faults using the ME-ARTR
For each PT fault (listed alphabetically), refer to their respective remedy.
•
ARC Fault-PT
– A series ARC fault has been detected on the PV input side of the PT. The PT
turned off to reduce current
fl
ow in an attempt to extinguish the DC arc in the PV system.
Remedy:
A breakdown in the wiring or in an electrical connector has the potential for
producing a DC ARC fault. Look for any loose or intermittent connection, or a defective
component (i.e., connectors, cables, PV controllers, or junction box) in the PV circuit.
Note:
When the cause of the ARC fault has been corrected, manually clear this fault by
pressing the PT controller’s RESET pushbutton for one second.
Info:
The PT controller contains an ARC fault test button to verify the operation of the
ARC fault detection/indication circuit. See the PT owner’s manual for more information
on the ARC fault test button.
Info:
The ARC fault circuit is normally enabled. However, if an external system ARC
fault detection/indicator is installed, the ARC fault detection circuit inside the PT can be
disabled. See the PT owner’s manual for information on disabling the ARC fault circuit.
•
Battery Voltage Fault
– This fault indicates that there is a large battery voltage difference
between the master controller and a slave controller. This fault is only allowed on a slave
controller and displays on each slave controller that detects a 4% or greater battery voltage
difference from the master controller.
Note:
The controller continues to run with this fault.
Remedy:
This fault can be caused by an open breaker to the BAT+ input, a bad wire
connection, or having a large voltage drop (due to using wire that is too small for the
distance and current) to the BAT input terminals on the slave PT controller.
The fault will automatically clear and the controller will resume operation once the
voltage to the BAT input terminals (on the slave controller) is within 4% of the master
controller’s battery voltage.
FAULT
PWR
CHG
INV
Ground Fault - PT
Settings/Info...
Blinking (red)
FAULT LED
Inverter/Charger
Setting/Info
PT Status**
** Alternates with
inverter/charger
status (scrolling)
Содержание ME-ARTR
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